How can we help?

We can only help with bikes bought from shengmilo.co.uk.

If you bought your bike on Amazon, eBay, AliExpress, Facebook Marketplace or any other website, we can't help with parts, warranty or questions – even if the seller used the Shengmilo name. Please contact the seller, or look for parts on the manufacturer's factory website.

The quickest way to get your part:

1. Find your model name. It's printed on the frame or in your order from the seller (for example MX02S, MX04, MX06, MX20, S600).
2. Look for the part on the manufacturer's factory website.
3. Or ask the seller you bought it from – they're responsible for your warranty and parts.

Lots of standard parts (tyres, inner tubes, brake pads, chains, pedals, cassettes) are also sold by ordinary bike shops. Take the old part with you so they can match it.

Send us a message with:

• your order number
• the part you need
• a photo of the part, and of any label or number on it

We'll check which part fits your bike and send you the price and delivery time. If your bike is under warranty and the part is faulty, it's free.

Chargers, batteries and accessories in stock are in our accessories shop.

Ask for a spare part

We sell the current models: S600 PRO, S700 PRO and S900 PRO. For some older models we still have a few parts, such as batteries and chargers – check our accessories shop first.

If your part isn't listed, try the manufacturer's factory website.

If you bought the older model from us, get in touch with your order number and we'll do our best to track the part down.

For an S600 PRO, S700 PRO or S900 PRO bought from us: yes. Spare batteries are listed in our accessories shop when in stock. If you can't see the right one, send us your order number and we'll tell you when it's available and what it costs.

Make sure the battery matches your bike. Batteries differ in voltage (48 V or 60 V), size and connector, even between models that look alike. A battery for the old S600 (17.5 Ah) is not the same as the S600 PRO battery (25 Ah).

For other or older models: see the manufacturer's factory website.

Always use a charger made for your battery's voltage:

• 48 V battery (S600 PRO, S700 PRO and most older models): charger with 54.6 V output
• 60 V battery (S900 PRO): charger with 67.2 V output

The plug must also match the socket on your battery. If you're not sure, send us a photo of your battery label and charging socket.

Never use a charger with a different voltage. It can damage the battery and is a fire risk.

Chargers in stock are in our accessories shop.

26 × 3.0 inch fat tyres and inner tubes are standard sizes. You can buy them in most bike shops and online bike stores. Search for "26 x 3.0 tyre" or "26 x 3.0 inner tube" (also written as 75-559).

Getting a lot of punctures? Choose a tyre with puncture protection or a thicker casing, and keep the right pressure (written on the side of the tyre). Too little pressure is the most common cause of punctures.

The frame number is stamped into the frame, usually underneath near the pedals, or on the rear part of the frame. Give the area a clean if it's hard to read.

Worth noting it down and keeping a photo – your insurer or the police will ask for it if the bike is ever stolen. If you bought from us and can't find it, get in touch with your order number and we'll check our records.

For bikes bought from another seller, please ask that seller – we don't have their records.

No. In Great Britain, an electric bike only counts as a normal pedal bike (an EAPC) if its motor is 250 W or less and stops helping at 15.5 mph. Our bikes have 2000 W (the S900 PRO 3000 W), so they're not classed as e-bikes on the road.

Limiting the speed or switching off the throttle doesn't change that, because the motor power stays the same.

Our bikes are for private land only – your own land, or land where you have the owner's permission. Not public roads, cycle paths, pavements or bridleways. The GOV.UK electric bike rules explain it in full.

No. To use a powerful e-bike on UK roads, it would need to be type-approved as a moped and then registered and taxed with the DVLA, with a number plate, insurance and a licence. Our bikes don't have that type approval (no COC), so they can't be registered, and we can't provide the documents.

That's why our bikes are sold for private land only. See Can I ride my Shengmilo on UK roads?

For theft or damage cover at home, some home insurance policies can add the bike as a valuable item – ask your insurer.

Bought from us: yes. Send us your order number and we'll email it to you.

Bought from another seller: please ask that seller. We're not allowed to share these documents for bikes we didn't sell.

Please note: the CE document confirms the bike meets product safety rules. It is not a road approval and can't be used to register the bike.

Request my CE document

No. A COC is only issued for vehicles with type approval, such as mopeds. Our bikes don't have type approval, so there's no COC and they can't be registered with the DVLA.

If you bought from us, we can send you the CE Declaration of Conformity. That's a product safety document, not a road approval.

Unfortunately not. Cycle to Work schemes are for bikes you can ride to work on public roads – in the UK that means standard e-bikes up to 250 W and 15.5 mph. Our bikes are far more powerful and for private land only, so they don't qualify, and we can't take part in these schemes.

Yes. All our bikes have a thumb throttle, so the motor can drive the bike without you pedalling. They also have pedal assist with 5 levels.

On UK roads, a bike with a throttle that works without pedalling isn't allowed as a normal e-bike – another reason our bikes are for private land only.

Yes. In the display settings you can set the maximum speed, switch the display to mph, switch off the throttle and change the number of assist levels. See How do I lock my bike to 15.5 mph? and Display settings menu.

The factory settings can differ between production batches, so check the speed limit setting (08P on the S600 PRO and S700 PRO, P08 on the S900 PRO) when your bike arrives.

Please note: a lower setting doesn't make the bike road legal, because the motor power stays the same.

Yes, two ways to save:

• A discount when you pay by card. Choose card payment at checkout and it's taken off automatically – you'll see the amount in your order summary.
• A welcome code for your first order when you join our email list. It arrives by email straight away.

Our website prices are already our best prices, and we don't haggle on single bikes. Codes from other websites or our EU shops don't work here.

Buying 2 or more bikes? Get in touch for a quote.

Yes. For 2 or more bikes to the same address, we can put together a special offer. Get in touch with the models, how many bikes and your postcode, and we'll send you a quote.

Yes – Klarna and Clearpay are available at checkout. They're separate payment companies: they pay us for your bike, and you pay them back over time.

How it works:

1. Add the bike to your basket and go to checkout.
2. Choose Klarna or Clearpay as the payment method.
3. Follow the steps. If you don't have an account yet, it's set up there and then.
4. They show you the plans they can offer you and do a quick check.
5. Once approved, your order is paid and we send your bike. You manage your payments in their app.

Good to know:

• You must be 18 or over and live in the UK.
• Klarna and Clearpay decide who is approved and which plan you get. We can't approve, extend or change a plan, and we can't see why you were declined. For questions about your plan, contact them directly.
• Only borrow what you can afford to pay back. Missed payments may affect your credit score.
• Declined? You can still pay by card, Apple Pay, Google Pay or bank transfer.

We don't offer our own finance or credit. More on our Klarna & Clearpay page.

Debit and credit cards, Apple Pay, Google Pay, Klarna, Clearpay and bank transfer. You'll see everything that's available at checkout.

Paying by card gets you a discount, shown at checkout. With bank transfer, we send your bike as soon as the money arrives, usually within 1–2 working days.

This happens quite often with bigger amounts like a bike. If a payment fails, no money is taken – and if your bank shows a temporary hold, it drops off by itself. Try these steps:

1. Have your banking app open. Most banks ask you to approve large online payments in the app or with a text code. If you don't approve it within a few minutes, the payment fails.
2. Check your card limit. Many cards have a daily or online limit below the price of a bike. You can usually change it in your banking app.
3. Try another card, for example a credit card instead of a debit card.
4. Klarna or Clearpay declined? Only they can change that decision – we can't see the reason.
5. Still stuck? Pay by bank transfer. It always works. Choose "Bank transfer" at checkout and you'll get our bank details. We send your bike as soon as the money arrives.

Need a hand? Get in touch and tell us which payment method you tried.

Yes, all our prices include VAT. If you need a VAT invoice, get in touch with your order number and we'll arrange one for you.

Want your company name on the invoice? Enter it in the "Company" field at checkout. We can't sell without VAT.

If you've had an order confirmation email, your order has come through. Can't find it? Check your spam or junk folder.

You'll get a second email with your tracking link when your bike leaves the warehouse. You can also check the status any time on our Track Your Order page.

Yes, as long as your bike hasn't left the warehouse yet. Get in touch as soon as possible with your order number.

If it's already on its way, you can still return it after delivery – you have 30 days. See How do I return my bike?

We don't offer phone support. We answer every message in writing, within 24 hours on working days, so you have everything in black and white.

For the quickest answer, use our contact form or the chat, and add your order number if you have one.

Yes, delivery is free to mainland Great Britain.

Every bike is sent from our UK warehouse, so there are no customs charges or import fees to pay. Some remote addresses cost extra – see Where do you deliver?

Most orders arrive within 4–8 working days: we dispatch within 1–3 working days, then the courier delivers within 3–5 working days.

Paying by bank transfer? We dispatch as soon as the money has cleared.

We can't offer next-day or express delivery.

We deliver free to mainland Great Britain.

Remote addresses may cost extra: the Scottish Highlands and islands, Northern Ireland, the Isle of Man, the Isles of Scilly and the Channel Islands. If your postcode needs a surcharge, we'll let you know before we send anything.

We can't deliver to British Overseas Territories (for example Gibraltar, Bermuda or the Falkland Islands) or outside the UK. Not sure about your address? Ask us before you order.

When your bike leaves the warehouse, we email you a tracking link. You can also check your order on our Track Your Order page.

Tracking hasn't moved for 3 working days? Sometimes the courier changes the label. Get in touch with your order number and we'll chase it.

Write your request in the order notes at checkout, or get in touch straight after ordering. We'll do our best to send it later so it arrives when you're in.

The courier decides the exact day, so we can't promise a specific date. They may text or ring you to arrange it, so check your mobile number at checkout.

No. We don't have a shop for collection, and bikes are too big for parcel lockers and most pickup points. We deliver to your address only.

The bike comes in one large box. Accessories or gifts may arrive separately, each with its own tracking.

An error code means the bike found a problem with a connection or a part. The codes depend on your display. See the exact list here:

• Error codes – S600 PRO & S700 PRO
• Error codes – S900 PRO

Try these steps first, they fix most errors:

1. Turn the bike off, wait 30 seconds and turn it on again.
2. Check the brake levers. If a brake lever is slightly pulled or stuck, the motor stops and some displays show an error. Make sure both levers spring back fully.
3. Check the cables and plugs between the handlebar, the frame and the motors. Turn the bike off first, unplug, look for bent pins or water, and plug them in firmly again.
4. Charge the battery fully and make sure it is locked in place.
5. Check the wheels turn freely. A rubbing brake disc or a loose motor cable can cause errors.

Still showing the code? Get in touch with your order number, the error number and a short video of the display.

1. Charge the battery fully. The charger light should change colour when it's full.
2. Check the battery is locked in and the key is turned to ON. Some batteries also have their own power button.
3. Check the battery contacts for dirt, water or damage.
4. Hold the display power button for 3–5 seconds.
5. Check the plug between the display and the frame.

Still not working? Contact us with your order number and a video showing what happens when you try to turn it on.

Pedal assist not working:

• Check the assist level on the display is not set to 0.
• The pedal sensor sits next to the pedals, with a small magnet ring. Check it isn't damaged, dirty or moved away from the sensor, and that its cable is plugged in.

Throttle not working:

• Check the throttle cable plug on the handlebar.
• Check both brake levers spring back fully. A pulled brake lever switches off the motor.

Still not working? Contact us with a short video.

Yes, on the S600 PRO and S700 PRO you can choose which motor drives the bike. Press and hold the + button for 3 seconds to switch the drive mode:

• P1 – front motor only
• P2 – rear motor only
• P3 – both motors (dual drive)

The display shows DUAL, SINGLE b (rear) or SINGLE F (front). If the bike is set to one motor, only one wheel pulls. That is normal.

If you have selected dual drive and the front motor still does not work, turn the bike off and check the motor cable plug near the front wheel. Still not working? Get in touch with a short video.

The S900 PRO has one 3000 W rear motor, so there is nothing to switch.

Range depends on lots of things. Check these first:

• Cold weather cuts battery range by up to 30% – very noticeable in a British winter. It comes back when it's warmer.
• Tyre pressure: soft tyres use much more energy.
• Throttle use and high assist levels use the most energy.
• Battery age: all lithium batteries slowly lose capacity over the years.

If the battery gets very hot, smells of burning or swells, stop using and charging it immediately and get in touch.

New bikes often need small adjustments after the first few rides, as parts settle:

• Chain rubbing: the rear derailleur needs adjusting. Any bike shop can do this in a few minutes.
• Squeaking brakes: clean the discs with isopropyl alcohol, and check the brake callipers are centred.
• Clicking or creaking: check the pedals, handlebar, seat post and wheel axles are tight.

We recommend a quick check at a local bike shop after the first 60–120 miles.

• Check the plug of the light and the cable along the frame.
• Make sure the lights are switched on in the display (often by holding the + button).
• Check the bike has power and the battery is charged.

If it still doesn't work and you bought from us, get in touch with your order number.

We don't have our own workshops. Most repairs can be done by any local bike shop or e-bike specialist – the bikes use standard parts for brakes, gears, tyres and chains.

If you bought from us and the problem is covered by warranty, get in touch first. We'll work out what's wrong from your photos and videos and send you the parts you need.

The bike arrives mostly assembled. You just fit a few parts – usually the handlebar, pedals, front wheel and mudguards. Instructions and tools are in the box. Most people take 20–30 minutes; allow up to an hour if it's your first bike.

We don't offer an assembly service, but any local bike shop can do it for a small fee. Check the brakes and that every bolt is tight before your first ride.

Let us know within 7 days of delivery with:

• your order number
• photos of the box and the damage
• a short video if something doesn't work

We'll send replacement parts, arrange a repair or exchange the bike – and your rights under the Consumer Rights Act 2015 always apply.

Report damage

2 years on the frame and 1 year on the motor, battery and electronics. This covers manufacturing faults with normal use.

Not covered: normal wear (tyres, brake pads, chain), accidents and crashes, wrong charging, and changes or repairs we haven't approved.

This is on top of your legal rights under the Consumer Rights Act 2015 – it doesn't replace them. Read the full warranty policy.

1. Get in touch with your order number.
2. Describe the problem and send photos and a short video.
3. We'll work out what's wrong and send the replacement part, usually within a few working days.
4. If it's not a repair you can do yourself, tell us and we'll agree the next step with you.

We can only handle warranty for bikes bought from shengmilo.co.uk. For bikes from other sellers, please contact that seller.

You can return your bike within 30 days of delivery – more than double the 14 days the law requires.

1. Get in touch with your order number and tell us you'd like to return it.
2. Choose how you want to send it back (see the costs below).
3. Pack the bike complete, in its original box if possible.

We refund you within 14 days of getting the bike back. Read the full returns policy.

Delivery to you is free. If you return the bike because you've changed your mind, the return postage is down to you. You can choose:

• We collect it from your door. We book the collection and take £150 off your refund to cover it.
• You send it yourself. You book and pay for a tracked, insured service to our warehouse. Nothing is taken off.

If the bike is faulty or we sent the wrong item, we cover the return. If the bike has been used more than needed to check it – ridden any real distance, dirty or damaged – we may reduce the refund to reflect the loss in value.

Accident and crash damage isn't covered by the warranty. If you bought your bike from us, we can still sell you the parts you need. Get in touch with your order number, photos and a list of the damaged parts.

If someone else caused the accident, their insurance may pay for the repair – ask us for a parts price list for your claim.

Yes. shengmilo.co.uk is the official Shengmilo UK store, operated by Smilo Group Limited. Lots of websites and marketplace sellers use the Shengmilo name – we can only give warranty, parts and support for bikes bought here.

Everything on this site applies to bikes sold by us.

We sell online only – no showrooms, shops or dealers, which keeps our prices down.

Instead, you have 30 days to send it back if it isn't right for you. See return costs.

• S600 PRO: the all-rounder. Two motors (two-wheel drive), full suspension, fat tyres. S600 PRO vs S700 PRO
• S700 PRO: the same power and battery, with a low step-through frame that's easy to get on and off.
• S900 PRO: one 3000 W motor, 2,100 Wh battery, built for rough off-road ground. S600 PRO vs S900 PRO

Coming from the old S600? See S600 PRO vs S600.

All three models suit riders from about 5'5" to 6'6" (165–200 cm). If you're on the shorter side or have short legs:

• The S700 PRO, with its low step-through frame, suits shorter riders best and is the easiest to get on and off.
• Taller riders usually feel most at home on the S600 PRO or S900 PRO.

Not sure? Send us your height and inside leg and we'll recommend the right bike.

Every product page has a full specification table – weight, maximum load, battery, motor, brakes and tyres – and you'll find the key figures in Technical data – S600 PRO & S700 PRO and Technical data – S900 PRO.

Need a detail that isn't listed, such as a part size? Ask us and tell us which model you mean.

Most standard bike accessories fit our bikes – lights, mirrors, bags and phone holders. Battery-powered lights are the simplest to add.

Lights that run off the bike's own battery must match its voltage, so we recommend having them fitted by a bike shop. Adding indicators or a number plate doesn't make the bike road legal.

Send your proposal through our contact form with "Partnership" at the start of your message. Include your company or channel and what you have in mind.

We read every proposal and reply if it's a good fit.

You can ask us to show, correct or delete your personal data at any time under UK GDPR. Get in touch from the email address you used, and we'll reply within the legal time limit (one month).

See our privacy policy for details. If you're unhappy with how we handle your data, you can also contact the Information Commissioner's Office (ICO).

• S600 PRO and S700 PRO: Yolin colour display with a 5-button remote on the left handlebar: power, +, –, light and i (information).
• S900 PRO: SW-K58 colour display (4.58 inch) with a 5-button SWK2 keypad: +, on/off, –/walk assist, light and i (info).

The buttons and settings menus are a little different, so always choose the guide for your model.

• Power on/off: press and hold the power button. The display turns itself off after 10 minutes without use.
• Assist level: short press + or – to choose level 0–5. Level 0 = no motor help.
• Information: short press i to switch between total distance (ODO), trip (TRIP), maximum speed (MAX) and average speed (AVG).
• Light: press the light button. The screen gets a little darker when the light is on. That is normal.
• Walk assist (4 mph / 6 km/h): press and hold – while you push the bike, for example uphill. Press and hold – again or pull a brake to stop. Never use it while riding.
• Cruise: while riding on the throttle at the speed you want, press and hold –. Press and hold – again or pull a brake to stop. Use it only on flat, quiet ground.
• Front / rear / both motors: press and hold + for 3 seconds. See Front motor only, rear only or both.

• On/off: press and hold the on/off key. The display turns itself off after 10 minutes at 0 km/h (you can change this in the settings).
• Assist level: press + or – to choose level 0–5. Level 0 = no motor help.
• Info: press i to switch between total distance (ODO), trip (TRIP), riding time (TIME) and more.
• Light: press the light key.
• Walk assist: press and hold – while you push the bike. Release to stop. Never use it while riding.

"Press and hold" means longer than 2 seconds. "Press" means a short click.

How to open the settings:

1. Turn the display on and stand still (speed must show 0).
2. Press and hold + and – together for more than 2 seconds.
3. Short press + or – to choose a setting (01P, 02P …).
4. Short press i to change it. Use + / – to change the value.
5. Short press i to save and go back to the list.
6. Press and hold i to save and leave the menu.

The settings:

• 01P – screen brightness (01 low, 02 normal, 03 high)
• 02P – units: 00 km/h, 01 mph
• 03P – battery voltage. Do not change.
• 04P – auto off time in minutes (00 = never)
• 05P – number of assist levels (for example 0–5 or 1–3)
• 06P – wheel size. Do not change, or the speed reading will be wrong.
• 07P – speed sensor magnets. Do not change.
• 08P – maximum speed (km/h; 25 = 15.5 mph)
• 09P – start mode: 00 start from 0, 01 start only when already moving
• 10P – drive mode: 00 pedal assist only, 01 throttle only, 02 both
• 11P – pedal sensor sensitivity (1–24, higher = more pedal turns before the motor starts)
• 12P – start strength of pedal assist (0 weakest – 5 strongest)
• 13P – pedal sensor magnets. Do not change.
• 14P – controller current limit. Do not raise it. See Can I limit each assist level?
• 15P – low battery warning value. Do not change.
• 16P – reset total distance (ODO)
• 17P – cruise control on/off
• 18P – walk assist (4 mph / 6 km/h) on/off

Tip: take a photo of each value before you change anything, so you can always go back.

How to open the settings:

1. Turn the display on and stand still.
2. Press and hold + and – together.
3. Press + or – to change the value. It blinks after a change.
4. Press the on/off key to save and go to the next setting.
5. Press and hold + and – together again to save and leave. After 10 seconds without pressing anything, the display saves and leaves by itself.

The settings:

• P00 – factory reset (not on every display)
• P01 – screen brightness (1 dark – 3 bright)
• P02 – units: 0 km/h, 1 mph
• P03 – battery voltage. Do not change.
• P04 – auto off time in minutes (0 = never)
• P05 – number of assist levels (0–3, 1–3, 0–5, 1–5, 0–9 or 1–9)
• P06 – wheel size. Do not change.
• P07 – motor magnets for the speed reading. Do not change.
• P08 – maximum speed (km/h; 25 = 15.5 mph), works for pedal assist and throttle
• P09 – 0 start from standstill, 1 start only when already moving
• P10 – drive mode: 0 pedal assist only, 1 throttle only, 2 both
• P11 – pedal sensor sensitivity (1–24)
• P12 – start strength of pedal assist (0–5)
• P13 – pedal sensor magnets. Do not change.
• P14 – current limit. Do not raise it.
• P15 – low battery warning value. Do not change.
• P16 – reset total distance: hold + for 5 seconds
• P17 – cruise control (0 off, 1 on)
• P18 – automatic light (0 off, 1 on)
• P19 – light sensor sensitivity
• P20 – start password (4 digits)
• P21 – password for advanced settings

Tip: take a photo of each value before you change anything.

You can set one maximum speed that works in every assist level and on the throttle. The setting is in km/h: 25 km/h = 15.5 mph.

S600 PRO & S700 PRO:

1. Stand still, display on.
2. Hold + and – together for 2 seconds.
3. Press + / – until you see 08P, then press i.
4. Set the value to 25 with + / –.
5. Press i to save, then hold i to leave.

Tip: if your display is set to mph, switch it to km/h first (02P = 00), set 08P to 25, then switch back to mph (02P = 01).

S900 PRO:

1. Stand still, display on.
2. Hold + and – together to open the settings.
3. Press the on/off key to move to P08.
4. Set 25 with + / – (always km/h on this display, even in mph mode).
5. Hold + and – together to save and leave.

Want to switch off the throttle too? See How do I switch off the throttle?

Please note: a 15.5 mph setting doesn't make the bike road legal in the UK, because the motor power stays the same. Our bikes are for private land only.

Change the drive mode in the display settings:

• S600 PRO & S700 PRO: setting 10P
• S900 PRO: setting P10

Values:

• 0 / 00 – pedal assist only. The throttle does nothing.
• 1 / 01 – throttle only. Pedalling gives no motor help.
• 2 / 02 – both (normal setting).

How to open the settings: S600 PRO & S700 PRO · S900 PRO

Not one by one. The displays do not let you set a separate speed or power for each level. But you can make the bike calmer in other ways:

• One maximum speed for all levels: setting 08P / P08. See Lock to 15.5 mph.
• Fewer levels: setting 05P / P05, for example only 1–3 instead of 0–5.
• Softer start: setting 12P / P12 (start strength of pedal assist), lower = gentler.
• Later start: setting 11P / P11 (sensitivity), higher = more pedal turns before the motor starts.

About the current limit (14P / P14): a lower value makes the bike weaker. Never set it higher than the factory value. Too much current can damage the controller or motor, and that is not covered by the warranty.

Write down or photograph the original values before you change anything.

Press and hold + for 3 seconds. Each time you do this, the mode changes:

• P1 – front motor only (display: SINGLE F)
• P2 – rear motor only (display: SINGLE b)
• P3 – both motors (display: DUAL)

Which mode when?

• Rear only: flat, firm ground. Saves battery and feels like a normal e-bike.
• Both: hills, sand, mud, snow, heavy riders. Most grip and power.
• Front only: rarely needed. Be careful on loose ground, the front wheel can slip in corners.

The S900 PRO has one rear motor (3000 W), so it has no motor switch.

Open the display settings and change 02P (S600 PRO & S700 PRO) or P02 (S900 PRO): 1 = mph, 0 = km/h. Most UK riders prefer mph.

On the S900 PRO the speed limit (P08) is always set in km/h, even when the display shows mph.

How to open the settings: S600 PRO & S700 PRO · S900 PRO

Yes. By default the display turns off after 10 minutes without use, to save battery. Change setting 04P (S600 PRO & S700 PRO) or P04 (S900 PRO). The value is in minutes. 0 means it never turns off by itself. Then remember to turn it off yourself.

S600 PRO & S700 PRO:

1. Display on, speed 0.
2. Press and hold the light button and + together for more than 2 seconds. You see dEF.
3. Press + or – to choose dEF-Y (yes).
4. Press i to confirm. The display shows dEF-0, resets and goes back to normal.

S900 PRO: use setting P00 in the settings menu, if your display has it.

After a reset, check the speed limit (08P / P08) and units again. If the speed reading looks wrong after a reset, get in touch and tell us your model.

S600 PRO & S700 PRO: the total distance (ODO) is reset with setting 16P (01 = reset). The trip distance does not reset by itself when you turn the bike off.

S900 PRO: open the settings, go to P16 and hold + for 5 seconds.

That is the start mode setting:

• S600 PRO & S700 PRO – 09P: 00 = the motor can start from 0 km/h, 01 = only when the bike is already moving.
• S900 PRO – P09: 0 = start from standstill, 1 = kick-to-start (move first).

Kick-to-start is a little safer, because the bike cannot jump forward if you touch the throttle by accident.

The S900 PRO display can have a 4-digit start password (setting P20) and a password for advanced settings (P21). Only you can set the start password. If you set one and forgot it, get in touch with your order number and a photo of the display.

Walk assist moves the bike at about 4 mph (6 km/h) while you walk next to it, for example uphill or out of a garage or shed. Press and hold –. Release (S900 PRO) or press and hold – again / pull a brake (S600 PRO & S700 PRO) to stop. Never use it while sitting on the bike.

Cruise control (S600 PRO & S700 PRO) holds your throttle speed: ride at the speed you want and press and hold –. Pull a brake to stop it. Use it only on flat, quiet ground.

You can switch these on or off: 17P (cruise) and 18P (walk assist) on the S600 PRO & S700 PRO, P17 (cruise) on the S900 PRO.

The code on the screen tells you which part has a problem. The bike will not drive normally until it is fixed.

• E001 / E009 / Error09 – controller problem. Check the cable plugs at the controller.
• E002 / E030 / Error10 / Error11 – communication problem. Turn off, check the display cable plug is clean and pushed in fully.
• E003 / E024 – hall sensor (motor sensor). Check the motor cable plugs near the wheels.
• E004 / E022 / Error08 – throttle. Check the throttle returns fully and its cable plug. If normal, the throttle may need replacing.
• E005 / E025 / Error05 – brake. A brake lever is pulled or stuck. Check both levers spring back. If it stays, the brake lever sensor may need replacing.
• E006 / E023 / Error07 – motor phase (motor cable). Check the thick motor cable and plug for damage.
• Error06 – low battery. Charge the battery.
• E021 – current problem. Turn off, wait 1 minute, try again.

Always turn the bike off before you unplug any cable. Still showing the code? Get in touch with your order number, the code and a short video.

• E00 – everything normal.
• E02 – brake. A brake lever is pulled or stuck. Check both levers spring back fully.
• E03 – pedal sensor. Check the sensor next to the pedals and its cable.
• E04 – walk assist is on (not a fault).
• E05 – cruise is on (not a fault).
• E06 – low voltage protection. Charge the battery.
• E07 – motor. Check the motor cable and plug at the rear wheel.
• E08 – throttle. Check the throttle returns fully and its plug.
• E09 – controller. Check the cable plugs at the controller.
• E10 – communication. Check the display cable plug.
• E12 – battery communication (BMS). Check the battery is locked in and the contacts are clean.
• E13 – front light. Check the light cable.

Always turn the bike off before you unplug any cable. Still showing the code? Get in touch with your order number, the code and a short video.

• Motors: 2 × 1000 W (front and rear wheel), 2 × 80 Nm
• Battery: 48 V 25 Ah (1,200 Wh)
• Range: 43–56 miles with pedal assist, 25–31 miles on throttle only (70–90 km / 40–50 km)
• Top speed: 15.5 mph limited, up to 28 mph unlocked – private land only
• Tyres: 26 × 3.0 inch fat tyres
• Brakes: hydraulic disc brakes front and rear
• Gears: Shimano 7-speed
• Display: Yolin colour display, 5 assist levels, throttle
• Weight: about 32 kg (70.5 lb)
• Max. load: 180 kg (400 lb / about 28 stone)
• Rider height: 5'5"–6'6" (165–200 cm)
• Charger: 2.0 A, charging time about 6–10 hours
• Seatpost: 30.4 mm diameter, 350 mm long
• Crank length: 170 mm

The S700 PRO has the same motors, battery and tyres, with a lower frame: standover height about 40 cm / 15.7" (S600 PRO about 45 cm / 17.7") and seat height 80–102 cm (S600 PRO 83–100 cm).

Exact values can change between production batches. The product page always shows the current data.

• Motor: 1 × 3000 W rear hub motor, 150 Nm
• Battery: 60 V 35 Ah (2,100 Wh)
• Range: 56–62 miles with pedal assist, 37–43 miles on throttle only (90–100 km / 60–70 km)
• Top speed: 15.5 mph limited, up to 40 mph unlocked – private land only
• Wheels: 19 inch rims with 70 mm wide tyres
• Brakes: hydraulic disc brakes
• Gears: Shimano 7-speed
• Display: SW-K58 colour display, 5 assist levels, throttle
• Weight: about 45 kg (99 lb)
• Max. load: 180 kg (400 lb / about 28 stone)
• Rider height: 5'5"–6'6" (165–200 cm)
• Charger: 3.0 A, charging time about 8–10 hours

Exact values can change between production batches. The product page always shows the current data.

• You can charge the battery on or off the bike.
• Red light on the charger = charging. Green light = full (or standby before charging).
• Charging takes about 6–10 hours (S900 PRO about 8–10 hours). A new or completely empty battery can take longer.
• Take the charger off within about an hour after the light turns green. Never charge for more than 12 hours, and do not leave it charging unattended.
• After charging, first unplug the charger from the wall, then from the battery.
• Charge indoors, in a cool and dry place, away from sunlight. Do not charge right after a ride in hot weather.
• Only use the original charger or one from us.

Stop charging at once and get in touch if the battery or charger gets very hot, smells, smokes or leaks.

• Do not run the battery completely empty. Turn the bike off when the battery is low.
• Charge after every ride. There is no memory effect, so short charges are fine.
• Not riding for a while (for example in winter)? Store the battery fully charged, indoors at room temperature, and charge it once a month.
• Keep it away from heat, open fire and direct sunlight.
• Do not open or modify the battery. That ends the warranty and can be dangerous.

In cold weather the range is lower. That is normal for every lithium battery.

• Hills: pedal along when climbing and pulling away. Avoid long, very steep climbs so the motor doesn't overheat.
• Pull away gently: avoid sudden starts and stops.
• Rain: light rain is fine – handy in Britain. Don't ride through deep water or floods, and never let water reach above the lower edge of the motor hub.
• Gears: avoid the smallest front with the smallest rear gear (and largest with largest). It wears the chain.
• Start on a low level until you know the bike.
• Max. load: 180 kg (about 28 stone), rider plus luggage.
• Always wear a helmet – and remember our bikes are for private land only.

The printed manual is in the box. Lost it? Get in touch with your order number and model, and we will email you the PDF for your bike and display.

• Handlebar, stem, saddle: 12–18 Nm
• Front wheel (bolt-on): 13–22 Nm
• Rear wheel axle nuts: 30–38 Nm
• Bottom bracket: 30–50 Nm
• Pedals: 28–40 Nm
• Crank bolts: 32–36 Nm
• Brake disc bolts: 3–5 Nm
• Brake calliper mount: 6–8 Nm
• Rear derailleur cable clamp: 3–5 Nm
• Seatpost clamp: 3–6 Nm
• Mudguard and headlight screws: 8–10 Nm
• S900 PRO display and keypad clamp: 1 Nm (very gently)

Use a hand wrench, not an impact driver.

Use 15–35 psi (1.0–2.4 bar) and always stay within the range printed on the side of the tyre.

• Higher pressure: hard, smooth ground. Rolls more easily and saves battery.
• Lower pressure: sand, mud, snow and soft ground. More grip and comfort.

Too little pressure is the most common cause of punctures. Check before every ride.

1. Turn the bike off and take the battery out.
2. If possible, fix it without removing the wheel: find the hole, pull that part of the tyre off the rim and patch or replace the tube.
3. If the wheel has to come off, see How do I remove a wheel?
4. Check the inside of the tyre for thorns, glass or wire before you fit a new tube.
5. Inflate to the right pressure.

Tube size: 26 × 3.0 (S600 PRO, S700 PRO). For the S900 PRO tell us your bike and we will tell you the exact size. Puncture-proof tubes or tyre sealant help a lot with fat tyres.

Both wheels on the S600 PRO and S700 PRO have a motor, so there is a cable to unplug. If you are not confident, a bike shop can do this.

1. Turn the bike off and take the battery out.
2. Turn the bike upside down on a soft surface (careful with the display).
3. Unplug the motor cable near the axle. Do not pull on the cable itself.
4. Rear wheel: shift to the smallest gear first.
5. Loosen the axle nuts or bolts (the S900 PRO front wheel has a quick release).
6. Take the wheel out carefully. Do not pull the brake lever while the wheel is out.
7. Put it back the same way. Make sure the brake disc sits in the calliper without rubbing, the torque washers are in place and the axle nuts are tight (rear 30–38 Nm).
8. Plug the motor cable back in, then test the bike slowly.

The bikes have hydraulic disc brakes. Check the pads regularly:

• Replace them when the pad material is about 1 mm thick or less, or if the brakes squeal metal on metal.
• Take the wheel out or use the calliper opening, remove the pad pin and slide the old pads out.
• Push the pistons back carefully with a plastic tool, fit new pads and the pin.
• Never pull the brake lever while the pads or the wheel are out.
• New pads need a few gentle stops before they brake at full power.

Brake lever feels soft or goes to the handlebar? Do not ride. The brake may need bleeding, a job for a bike shop. Contact us if you need pads or need help with the right type.

1. Turn the bike off and take the battery out. Never plug or unplug the display while it has power.
2. Follow the cable from the display or throttle to the plug and unplug it. The S900 PRO display uses a 5-pin plug.
3. Loosen the clamp on the handlebar, fit the new part in the same place and plug it in.
4. Tighten clamps gently (S900 PRO display and keypad: about 1 Nm).
5. Put the battery back, turn on and check the settings (speed limit, units).

Only use a display or throttle made for your model. Others may not work with the controller. Contact us with your order number to order the right part.

The brake levers have a small sensor that switches the motor off when you brake. A replacement must be an e-bike lever with the same sensor and plug.

On hydraulic brakes the lever is connected to the brake hose, so changing it usually means bleeding the brake. We recommend a bike shop for this job. Contact us with your model to order the right lever.

• Pedals are marked R (right) and L (left), on the sticker and on the thread.
• Right pedal: tighten clockwise. Left pedal: tighten anti-clockwise.
• Put a little grease on the thread and start by hand, so it goes in straight. If it does not turn easily, check you have the right side.
• Tighten with a 15 mm wrench (about 35–40 Nm).

A pedal on the wrong side destroys the thread in the crank.

1. Loosen the stem bolts with a 4 mm hex key.
2. Centre the handlebar and turn it to the angle you like.
3. Tighten the bolts evenly, a little at a time, to 8–10 Nm.
4. Check the handlebar cannot twist before you ride.

• Clean and oil the chain first. A dirty chain often causes skipping.
• Shifts slowly to bigger gears: turn the small barrel adjuster at the shifter or derailleur a quarter turn anti-clockwise, test, repeat.
• Shifts slowly to smaller gears: turn it a quarter turn clockwise.
• Still skipping? The derailleur hanger may be bent after a fall. A bike shop can straighten it quickly.

1. Wipe the chain with a dry cloth after riding, especially in rain.
2. Remove sand and dirt with a brush and warm soapy water if needed. Do not use acid or rust remover.
3. Let it dry fully.
4. Put a drop of chain oil on each link and wipe off the extra.

• Use a cloth or soft brush with plain or soapy water. No pressure washer, it pushes water into the motors, bearings and plugs.
• Take the battery out first and keep the battery contacts dry.
• Clean the fork tubes and dust seals carefully and dry them with a lint-free cloth.
• A fork dust cover protects the fork from dirt and stones.

• Brakes: both work well, pads not worn.
• Tyres: right pressure, no cuts or bulges.
• Wheels: spokes tight, wheels run straight. A noise from the front wheel can mean loose axle bolts.
• Motors: axle nuts tight, motor cables not damaged.
• Chain: clean and oiled.
• Pedals and cranks: tight.
• Battery: locked in, no damage.

Check after the first 30 miles and then about once a month.