Engwe L20 Boost Fat Tire Electric Bike
SKU: U38816In Stock
SPEED15.5 Mph
RANGE78 Miles
MOTOR250W
BATTERY13Ah
CHARGING6.5 Hours
WEIGHT75 lbs
Adjustable Cycle Helmet£38.99
Front and Rear Light Set£44.99
This Model Is Fully Compliant With UK Road Regulations
This bike is built to comply with UK Electrically Assisted Pedal Cycle (EAPC) regulations, meaning it can be used on public roads and cycle paths without registration, tax, or a licence. Motor assistance is limited to 250W and cuts off at 15.5 mph (25 km/h).
See UK LegislationThis bike is built for riders 5'0"-6'0" (152-183 cm).
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The manufacturer's figures, not ours.
This one carries 624 Wh of battery. The maker quotes 78 mi; in mixed riding with some hills, expect nearer 59 mi. A full charge costs about £0.17. Across a year that is roughly £985.00 less than making the same journeys by car, so the bike pays for itself in about 14 months. Everything here is worked out from this bike's own specification. Estimates, not promises: the assumptions are printed underneath.
Range you can expect
| Low assist, flat roads | 78 mi |
|---|---|
| Mixed riding, some hills | 59 mi |
| Full assist, loaded or hilly | 43 mi |
| Riding time on a charge | 5 h 2 min |
What it costs to run
| A full charge | £0.17 |
|---|---|
| Every 100 miles | £0.22 |
| Electricity for a year | £5.00 |
| The same year by car | £990.00 |
| You keep | £985.00 |
| Pays for itself in | 14 months |
Worked out from the specification
| Battery energy | 624 Wh |
|---|---|
| Energy per mile | 8.0 Wh |
| Charger output | 2.0 A |
| Power to weight | 7.3 W/kg |
| You can carry | 265 lb |
Based on £0.245 per kWh, £0.45 per mile to run a small car, and 2,200 miles a year. Charging is costed at the socket, not at the battery.
Seventy-eight miles on fat tyres, and road legal
The ENGWE L20 Boost claims a longer range than ninety-two percent of our catalogue, on four-inch tyres, from a 250W motor that stays inside UK road law.
Fat tyres usually cost range. Getting this figure out of them is the reason to look at this bike.
Seventy-five newton metres through twenty-inch wheels
Strong torque for a road-legal motor, and small wheels to give it leverage. It pulls away harder than the rating suggests, which on a heavy bike from a standing start is what you notice.
Assistance stops at the legal limit; past that the gearing is yours.
Wide tyres change what counts as a road
Four inches of tyre at low pressure turns gravel, wet grass, sand and broken tarmac into ordinary surfaces, and flattens the potholes on the way there.
They also work as suspension, which is why the ride stays comfortable without a rear shock.
Large rotors, on mechanical brakes
The discs are a hundred and sixty millimetres front and rear. A larger rotor gives more leverage and sheds heat better on a long descent.
They are cable-operated, so one Allen key adjusts them and a set of pads costs a few pounds anywhere, with nothing to bleed.
Aluminium, and it folds
A 6061 aluminium frame keeps the weight sensible for a bike on tyres this size, and it will not rust in a shed or under a cover.
Folded it goes in a car boot. At seventy-five pounds, treat the hinge as transport rather than a way to carry it.
Where the range comes from
Not from a large battery: the pack is around the lower middle of our catalogue. It comes from a 250W motor working within itself and small wheels that do not ask much of it.
The panel below turns the capacity into energy per mile, which is the fair way to judge how much of the seventy-eight mile claim you will actually see on fat tyres.
Six and a half hours to fill
An overnight job rather than something between two trips, which suits a bike with this much claimed range: you will rarely be charging from empty.
Topping up rather than running flat is what keeps a pack healthy past its second winter.
What to do before the first ride
It arrives largely assembled. Allow twenty minutes.
- Unfold and lock the frame hinge and the stem
- Fit the pedals and set the saddle height
- Check both brakes and centre the calipers before a first descent
- Set tyre pressure: soft for grip, firmer for range
- Charge to full once before commuting on it
A weight limit in the lowest few per cent of our range
This is the catch, and it is an odd one on a fat-tyre bike. The rated payload is lower than almost every other bike we sell, which is not what the tyres imply.
Check the figure in the table below against your own weight plus whatever you carry, before you order rather than after. If you are near it, one of our higher-rated frames is the better buy and we would rather say so now.
Heavy, and the range is a ceiling
Seventy-five pounds is a bike you wheel rather than carry, folded or not, and stairs at both ends of a commute will wear on you.
Range figures are measured at the lowest assist level on flat ground, and fat tyres punish that harder than narrow ones do. The bands in the table below are the version to plan around. What stands is that it is strong for a 250W motor on fat tyres.
- BRAND
- ENGWE
- CATEGORY
- Fat Tire
- MOTOR POWER
- 250W
- RANGE
- 78 Miles
- SPEED
- 15.5 Mph
- BATTERY
- 13Ah
- WEIGHT
- 75 lbs
- CHARGING TIME
- 6.5 Hours
- BRAKE SYSTEM
- 160 mm Front & Rear Disc Mechanical Brakes
- FRAME MATERIAL
- 6061 Aluminum Alloy
- MAXIMUM LOAD
- 265 lbs
- INPUT VOLTAGE
- 48V
- TIRE SIZE
- 20 inch
- TORQUE
- 75 Nm
The Engwe L20 Boost Fat Tire Electric Bike states 250W, 78 Miles and 15.5 Mph, and below it is set against the PVY F20 Electric Tricycle. Every figure the two disagree on is marked. Choose a different bike to compare it with whichever one you are also considering.
9 of 13 specifications differ. View PVY F20 Electric Tricycle
- What is the maximum range of the ENGWE L20 Boost?
- The ENGWE L20 Boost offers up to 78 miles of riding range depending on terrain and riding mode.
- What makes the ENGWE L20 Boost different?
- It features a unique 75Nm power boost button and torque sensor for smoother acceleration and easier hill climbing.
- Is the ENGWE L20 Boost suitable for daily commuting?
- Yes, its step-through frame, fat tires, and comfortable suspension make it ideal for everyday urban riding.
- Does the ENGWE L20 Boost support cargo carrying?
- Yes, it comes with a rear rack and front basket support for carrying groceries, bags, and daily essentials.
- Are the electric bikes brand new?
- Yes. All electric bikes sold by BikTron are brand new, factory-sealed, and sourced directly from authorised manufacturers and official distributors.
- How do I choose the right electric bike for me?
- Pick a bike based on how you plan to ride. City bikes are great for commuting, folding bikes work well if you need compact storage, mountain bikes handle hills and mixed terrain, and cargo bikes are ideal for carrying shopping or loads. If you are not sure, our Bike Quiz can help.
- Are the batteries original and certified?
- Yes. Every electric bike battery is brand new and original from the manufacturer, with full safety certification and performance testing.
- Are the bikes tested before shipping?
- Yes. Each e-bike goes through a quality check before dispatch, covering electronics, brakes, motor response, and battery performance.
- Do electric bikes come with a warranty?
- Yes. All electric bikes from BikTron include a manufacturer warranty. Duration depends on the brand and model. Most bikes include a 12-month warranty as standard.
- How long does delivery take?
- Standard UK delivery usually takes 2 to 7 business days. Remote areas may take a little longer. You will receive a tracking link by email once your order is dispatched.
- Which payment methods do you accept?
- We accept Visa, Mastercard, PayPal, Apple Pay, Google Pay, and Klarna buy-now-pay-later. All payments are processed securely.
- Can I return my electric bike?
- Yes. You can ride the bike and still return it. Tell us within 30 days of delivery and we book the courier and collect it from your door. Contact us first and we will guide you through the process.
- Do the bikes need assembly?
- Most electric bikes arrive 85 to 90 per cent pre-assembled. You will usually need to attach the handlebars, pedals, and adjust the seat. A basic tool set is often included.
- Are BikTron electric bikes legal to ride in the UK?
- Yes. All bikes sold by BikTron that meet UK EAPC rules (250W motor, max 15.5 mph assisted speed, pedal-assisted only) are fully road-legal. You do not need a licence, tax, or insurance to ride them on public roads. Riders must be at least 14 years old.
- What about the electric scooters?
- Those are different, and the law treats them differently. A privately owned e-scooter cannot legally be ridden on a public road, pavement or cycle lane in the UK, whoever sold it. We sell ours for private land use only, with the landowner's permission, and every scooter product page says so. If you want something you can ride to work, choose an electric bike.
Secure checkout and fast UK delivery on every order.
- Free standard UK delivery on most bikes — 2 to 7 business days
- Express delivery may be available on request
- Full tracking included with every order
- Pay securely with Visa, Mastercard, PayPal, Apple Pay, Google Pay, or Klarna
- 0% finance available through Klarna at checkout
Before you order:
- Delivery is to UK mainland addresses — some remote areas may have a small surcharge
- Most bikes arrive 85–90% pre-assembled and include basic tools for setup
- If you are unsure about sizing or specs, contact us before you buy
Full details at Payment & Shipping.
Simple and fair terms so you can buy with confidence.
- 30-day return window — if the bike is not right for you, send it back
- Ride it. It needs to come back clean, undamaged and complete, with the charger, tools and manual
- A refund or replacement is issued after we receive and check the return
Please note:
- For a change of mind we book the collection and deduct its cost from your refund, and we tell you the amount before we book it
- If we sent the wrong item or it arrived faulty, we cover return shipping in full
- All bikes include a 12-month manufacturer warranty as standard
Full details at Returns & Refunds and Warranty.
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Helpful reading
Guides and reviews to help you decide.
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