750W Motor With Strong Everyday Pull
Built around a 750W motor for punchy starts and steady assistance when the route turns uphill. Top speed is listed at 31 MPH for quicker commutes and open-path riding.
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Estimated 3–7 working days. Your shipment will have tracking information where available.
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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.
12 months against manufacturing defects.
Confirmed production faults affecting the original frame, battery, motor, controller, display, charger and other factory-installed electrical or mechanical components.
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.
12 months against manufacturing defects.
Confirmed production faults affecting the original frame, battery, motor, controller, display, charger and other factory-installed electrical or mechanical components.
Separate manufacturer terms apply. Warranty periods are not added together.
The Chamrider DM427 Electric Bike is a capable everyday Electric Bike built for commuting, delivery work, and weekend riding. With a powerful motor, extended electric range, and high load capacity, it’s designed for riders who need reliability, comfort, and performance for daily use and longer journeys.
High-Speed Motor Performance
Powered by a 750W high-speed motor, the DM427 delivers strong acceleration and confident cruising performance. With a top speed of up to 50 km/h, it’s well suited to longer commutes and efficient urban travel where permitted.
Extended-Range Battery System
The 48V 27Ah battery provides an impressive electric-only range of 60–90 km, depending on riding conditions and load. This larger capacity battery makes the DM427 ideal for delivery riders and commuters who need dependable all-day range without frequent charging.
Stable Ride & Confident Control
Fitted with Chaoyang 27.5″ × 2.35″ tyres, the DM427 offers a balanced ride with good rolling efficiency and grip on roads and cycle paths. A hydraulic brake system with power cut-off delivers strong, controlled stopping power, improving safety at higher speeds and under load.
Versatile Gearing for Everyday Riding
A 7-speed drivetrain allows smooth gear changes and flexible riding across flat routes, hills, and stop-start traffic, helping maintain efficiency and rider comfort throughout the journey.
Key specs
| Collection | Chamrider Electric Bikes |
|---|---|
| Brand | Chamrider |
| Motor Power | 750W |
| Battery | 48V |
| Top Speed | 31 MPH |
| Max Range | 92 Miles |
| Charging Time | 6-7 Hours |
| Wheel Size | CST 27.5 × 2.4 (off-road) |
| Brakes | Dual Hydraulic Disc Brakes |
| Bike Weight | 27kg |
Check rider measurements and sizing before you order.
Fit guidance: Full-size 27.5 in frame; contact us with your inside leg if fit is uncertain.
Sizes are a guide. Rider proportions, footwear and setup can affect fit.
Built around a 750W motor for punchy starts and steady assistance when the route turns uphill. Top speed is listed at 31 MPH for quicker commutes and open-path riding.
Battery spec is listed as 48V, designed for longer rides between top-ups. Max range is listed at 92 Miles depending on assistance level and riding conditions. Charging time is listed at 6-7 Hours. Range varies with rider weight, speed, terrain, and riding mode.
Tyres are listed as CST 27.5 x 2.4 (off-road), offering stable handling and extra confidence on varied surfaces. Brakes are listed as Dual Hydraulic Disc Brakes to back up the extra speed and weight. Max rider load is listed at 180kg, making it a strong choice for heavier riders or carrying kit. Product weight is listed at 27kg.
1 x Chamrider DM427 Electric Bike
1 x Charger
2 x Keys
1 x Tool Kit
1 x User Manual
Watch the assembly guide below before first setup.