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Trail Surge Ltd · Unit 62, Centenary Business Centre, Nuneaton, CV11 6RY
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We have a real Nuneaton showroom and repair workshop, with UK-based servicing, repairs and 12-month warranty support. We're here for you after delivery, too.
Visit us: CV11 6RY · Mon–Fri, 10am–4pmTrail Surge Ltd · Company No. 16935369 · VAT No. 521226239
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TrailSurge is UK registered and VAT registered: Company No. 16935369 · VAT No. 521226239.
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Included with your purchase
12 monthsof cover
UK-based warranty and after-sales support
Frame & forks · Motor & controller · Battery & charger · Factory-fitted electrics & mechanical parts
Fault assessment, warranty guidance and help arranging eligible repairs or replacement parts.
Contact our UK team with your order number and a few photos.
Normal wear, accidental damage, misuse and unauthorised modifications are excluded. Eligibility and remedies are subject to the full warranty terms.
Contact TrailSurge with your order number, a description of the fault and clear photos or a video. Our team will assess the issue and explain the next steps.
3 years on the frame and 1 year on original fitted parts from delivery.
Manufacturing defects affecting the frame, battery, motor, controller, charger, forks, brakes, display, lights and other original components. Approved cases are generally resolved with replacement parts.
Separate manufacturer terms apply. Warranty periods are not added together.
Frame & forks · Motor & controller · Battery & charger · Factory-fitted electrics & mechanical parts
Fault assessment, warranty guidance and help arranging eligible repairs or replacement parts.
Contact our UK team with your order number and a few photos.
Normal wear, accidental damage, misuse and unauthorised modifications are excluded. Eligibility and remedies are subject to the full warranty terms.
Contact TrailSurge with your order number, a description of the fault and clear photos or a video. Our team will assess the issue and explain the next steps.
3 years on the frame and 1 year on original fitted parts from delivery.
Manufacturing defects affecting the frame, battery, motor, controller, charger, forks, brakes, display, lights and other original components. Approved cases are generally resolved with replacement parts.
Separate manufacturer terms apply. Warranty periods are not added together.
Quick Summary
The KETELES K820 Pro is a compact single-motor fat‑tyre e‑bike designed for everyday urban and trail riding. It's a versatile commuter that balances range and power in a user-friendly foldable package.
Smooth Power Delivery
The 250 W rear hub motor delivers steady pedal‑assist and throttle support, perfect for city streets or light trail use. Riders report smooth speed control and reliable performance across flat and rolling terrain.
Comfort & Control
Fat tyres and front suspension absorb bumps, offering confidence on uneven surfaces. Disc brakes provide reliable stopping power, and the Shimano 7‑speed drivetrain gives flexibility when accelerating or climbing.
Smart Battery System
A large 48 V 17.5 Ah removable battery ensures extended ride range. It locks to the frame and includes typical safety protections against over-charge and over-discharge for added peace of mind.
Tech You Can Trust
Full LCD display shows all key ride metrics—speed, distance, battery life, and assist level—making it easy to monitor performance and plan rides efficiently.
Built for Everyday Use
The folding frame allows for compact storage and transport. With its fat‑tyre stability, moderate weight, and reliable components, the K820Pro is a versatile option for daily commuting, errands, and casual off‑road fun.
| Collection | Electric Bikes |
|---|---|
| Brand | Keteles |
| Motor Power | 250W |
| Battery | 48V 17.5AH |
| Top Speed | 31 MPH |
| Acceleration Method | Regular Pedalling + Pedal Assist + Throttle Acceleration |
| Max Range | 19-28 MILES |
| Charging Time | 7-8 Hours |
| Shock Absorbers | Front |
| Wheel Size | 29 x 2.1 Tyre |
| Brakes | Disc Brakes |
| Gears | Shimano 21-Speed |
| Bike Weight | 38KG |
| Max Climb | 15 degrees |
Check rider measurements and sizing before you order.
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
Powered by a 48V 250W brushless rear hub motor, the K820 Pro is built for smooth everyday riding with consistent assistance and a natural pedal feel when you want to keep it efficient.
Removable 48V 17.5AH lithium battery designed for easy charging at home or work. The brand quotes around 30-45km of range per charge (usage dependent) with a typical 7-8 hour recharge time.
29x2.1 tyres and front suspension help take the sting out of bumps, and disc brakes provide reliable stopping. Shimano 21-speed gearing gives you the cadence range for hills and flatter cruising.
1 x KETELES K820 Pro Electric Bike
1 x Front & Rear Fender Set
FREE
1 x Charger
2 x Keys
1 x Tool Kit
1 x User Manual
Explore e-bikes, electric scooters and electric dirt bikes in person. Get expert advice and find your perfect ride.
Have a question before ordering or need help afterwards? Our UK-based team is here to help with product advice, orders, parts and warranty enquiries.
Keep your ride performing at its best. Our Nuneaton workshop offers servicing, diagnostics and repairs for bicycles, e-bikes and electric scooters.
