Varun C20-1 Electric City Bike
SKU: F23833In Stock

SPEED15.5 Mph
RANGE35 Miles
MOTOR500W
BATTERY7.8Ah
CHARGING4-6 Hours
WEIGHT64 lbs

Adjustable Cycle Helmet£38.99
Front and Rear Light Set£44.99
Private Land Use Only.
Not for public roads, pavements or cycle paths. Its motor and assisted top speed are above the UK EAPC limits of 250W and 15.5 mph, which makes it a motor vehicle in law. It would need registration, insurance and a licence. Ride it on private land.
See UK LegislationThis one carries 374 Wh of battery. The maker quotes 35 mi; in mixed riding with some hills, expect nearer 26 mi. A full charge costs about £0.10. Across a year that is roughly £983.00 less than making the same journeys by car, so the bike pays for itself in about 8 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 | 35 mi |
|---|---|
| Mixed riding, some hills | 26 mi |
| Full assist, loaded or hilly | 19 mi |
| Riding time on a charge | 2 h 16 min |
What it costs to run
| A full charge | £0.10 |
|---|---|
| Every 100 miles | £0.30 |
| Electricity for a year | £7.00 |
| The same year by car | £990.00 |
| You keep | £983.00 |
| Pays for itself in | 8 months |
Worked out from the specification
| Battery energy | 374 Wh |
|---|---|
| Energy per mile | 10.7 Wh |
| Charger output | 2.0 A |
| Power to weight | 17.2 W/kg |
| You can carry | 220 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.
Eighty newton metres for five hundred and ninety nine pounds, for private land
The VARUN C20-1 puts 80 Nm of torque and a 500W motor on a twenty inch frame, at £599 from £699.
At that power it sits outside the UK road rules, so we sell it for private use on private land. Please read the panel above before you order.

Where you can and cannot ride it
The rules cap an electrically assisted pedal cycle at 250W continuous. This motor is rated at 500W, so it falls outside that and cannot be ridden on a road or a cycle path without registration, tax, insurance and a licence.
It is sold for use on your own property, or on land where the owner has given you permission. If you need something for a commute, look at the 250W bikes we list and we will point you at the right one.

Eighty newton metres, and a gradient figure to go with it
Torque is what pulls you away from a standstill and up a slope. Eighty newton metres is the top of our range under six hundred pounds, and unusually VARUN also publish what it means: a gradient capability of seventeen to thirty eight per cent.
Thirty eight per cent is a one in two point six slope. Most manufacturers will not put a number on this at all, and a number is worth more than an adjective.

Regenerative braking, which almost nothing here has
The brakes recover energy back into the battery, and VARUN claim about five per cent restored.
Five per cent is not going to change your day. What it does change is brake wear on a long descent, because the motor is taking some of the work the pads would otherwise do.


The battery is small, and that is the trade
Seven point eight amp hours at 48 volts. Only two per cent of our catalogue carries less.
VARUN quote 55 to 70 km on the motor alone and 80 to 128 km with pedalling, both measured with a 65 kg rider, which is a heavier caveat than it sounds. A larger rider will see less.
The panel below turns the capacity into energy per mile and gives the honest bands. Treat this as a bike for short, powerful journeys rather than long ones.

IP65, a horn and a light
Rated IP65, which is dust tight and rated against water jets from any direction, with a CE certificate and a twenty four month warranty.
- A mechanical horn rather than a bell
- A headlight fitted from the factory
- Dual disc brakes front and rear
- A suspension fork on a twenty inch wheel
Most bikes at six hundred pounds say nothing about water ingress at all.

Read the two weight limits before you order
The rider weight limit is a hundred kilograms and the total payload is 220 pounds, which is lower than ninety nine per cent of our catalogue.
That is the real constraint on this bike, not the battery. If you are over sixteen stone, or you are near it and you carry anything, this is not the right frame and we would rather say so now than after it arrives.


Who it fits
VARUN size it for riders between 150 cm and 185 cm, which is 4ft 11in to 6ft 1in. Twenty inch wheels on a 1.96 inch tyre, so a narrow tyre rather than a fat one.
The frame is aluminium and the whole bike is sixty four pounds.

Before the first ride
Four to six hours on the fast charger, and it arrives largely built.
- Fit the front wheel, handlebar and pedals
- Set the saddle to hip height
- Check tyre pressure, which matters on a narrow tyre
- Bed the discs in before you use the power in earnest
- Charge to full before the first ride

Who should not buy it
Anyone who needs to ride on a public road, anyone over a hundred kilograms, and anyone who wants long distance. Those are three real limits and none of them is negotiable.
Buy it if you have land, you are inside the weight and height range, and you want the strongest torque figure we sell for under six hundred pounds. On a steep private track, nothing else in this price bracket will pull like it.
- BRAND
- VARUN
- CATEGORY
- City
- MOTOR POWER
- 500W
- RANGE
- 35 Miles
- SPEED
- 15.5 Mph
- BATTERY
- 7.8Ah
- WEIGHT
- 64 lbs
- CHARGING TIME
- 4-6 Hours
- BRAKE SYSTEM
- Dual Disc Brakes
- FRAME MATERIAL
- Aluminum
- MAXIMUM LOAD
- 220 lbs
- INPUT VOLTAGE
- 48V
- TIRE SIZE
- 20 inch
- TORQUE
- 80 Nm
The Varun C20-1 Electric City Bike states 500W, 35 Miles and 15.5 Mph, and below it is set against the DYU A1F Electric Folding Bike. Every figure the two disagree on is marked. Choose a different bike to compare it with whichever one you are also considering.

10 of 11 specifications differ. View DYU A1F Electric Folding Bike
- 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.
Write a Review
Share your experience and help other customers make the right choice.
Other Bikes You Might Like
Browse alternative electric bikes suited to a similar riding style or price range. A useful way to compare options before you decide.
Cyrusher Trax Hybrid All-Terrain Electric Bike
18+, UK residents. Credit subject to status. Terms apply.
More From This Brand
Explore more electric bikes from the same brand, selected for similar quality, performance, and everyday value.
Varun S26-1 Fat Tire Electric Bike
Varun M26-2 PRO Fat Tyre Electric Bike
VARUN S20-2 PRO Folding Electric Bike
VARUN M26-2 PLUS Fat Tyre Electric Mountain Bike
18+, UK residents. Credit subject to status. Terms apply.
Helpful reading
Guides and reviews to help you decide.
ReviewVarun C20-1 Review: Is This £599 City E-Bike Worth It? UK Test
The Varun C20-1 is one of the cheapest complete city e-bikes in the Biktron shop. This review explains what you get for £599 and who should buy it.
Read guide →
ComparisonVarun S700-1 vs S700-2: What £10 Actually Buys You
Two nearly identical Varun city e-bikes sit just £10 apart. We break down what that small price gap actually buys, from components to UK legality, so you can choose with confidence.
Read guide →
ReviewVARUN S700-1 Review, City Electric Bike UK Guide
We reviewed the published specifications for the VARUN S700-1 city electric bike, including battery range and hill-climb capability, and checked UK e-bike law. Here's what to know before buying.
Read guide →
Not sure which electric bike is right for you?
Answer a few quick questions and we will help point you towards the bikes that best match your riding style, budget and daily needs. Fast, free, no commitment.
Start the Bike QuizGet £30 Off Your First Order
Sign up to the BikTron newsletter and receive £30 off your first purchase. Be the first to hear about new bikes, special deals, and practical electric bike tips — no spam, just useful updates.
New subscribers only. Discount applied at checkout.


















