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Checking: Cyrusher Flex Electric Bike
Why Buy From TrailSurge?UK showroom, product support & aftercare
Buy your Cyrusher Flex Electric Bike with UK-based support
TrailSurge is a UK retailer with a showroom and workshop in Nuneaton. Our team can help before you order and continue supporting you after your Cyrusher Flex Electric Bike arrives.
UK-based customer support before and after your purchase
Showroom and workshop in Nuneaton
Help with product questions, setup, parts and aftercare
Tracked UK delivery with support if you need help with your order
Speak to a real member of our team before placing your order
Why buy through TrailSurge?For the best UK-based support and aftercare, we recommend buying through TrailSurge rather than ordering directly from overseas manufacturers or China-based sellers, where returns, warranty support and parts handling can be more difficult.
Need help with the Cyrusher Flex Electric Bike?Ask our team a question before ordering.
TrailSurge Warranty+✓
BEST WARRANTY IN THE UK
Stronger cover. UK support. Real help when you need it.
TrailSurge Warranty+
Extra protection, backed by our UK team
For the first 12 months, TrailSurge Warranty+ gives you direct UK support on eligible faults affecting the main factory-fitted components — with practical help to get you back up and running.
UK-based fault support
Major factory-fitted components covered
Repair, parts or another suitable solution where eligible
Typical component cover:
Eligible faults affecting major factory-fitted components, including the frame and forks, motor and drive system, controller, battery and BMS, charger, wiring, display, gears, brakes, and factory-fitted sensors or controls.
+Cyrusher manufacturer warranty
Warranty period
2 years on the frame, motor and controller; 1 year on the battery, hydraulic brakes, fork, rear shock, display, pedal-assist sensor, charger, cockpit, seat post, bottom bracket, crankset, rear rack and shifting system.
What’s covered
Confirmed manufacturer defects in the listed original components. An accepted warranty normally provides one replacement part for each eligible covered component.
Description
The CyrusherFlex is a folding fat-tyre electric mountain bike that combines versatility with power. With its 250W road-legal motor, full suspension system and robust 48V 15Ah battery, it’s designed for commuting, trail riding and off-road exploration while still remaining compliant for UK and EU use.
Smooth Power Delivery The 250W brushless rear hub motor provides consistent pedal assistance up to 25km/h, with higher peak output available for private/off-road use. Multiple PAS levels and Shimano gears ensure a smooth and adaptable ride across all terrains.
Comfort & Control 26” x 4.0” fat tyres deliver exceptional grip and stability whether on city streets, gravel paths or sand. The full suspension system—front suspension fork and rear shock—absorbs bumps for a smooth ride, while hydraulic disc brakes provide confident stopping power in all conditions.
Smart Battery System The Flex is powered by a 48V 15Ah lithium-ion battery, removable and lockable for convenience. It offers up to 80–100km of pedal-assist range per charge, with a charging time of around 6–8 hours.
Tech You Can Trust A colour LCD display provides real-time ride data including PAS level, speed, battery life, and distance. Integrated LED front and rear lights improve visibility and safety in low-light conditions.
Built for Everyday Use With its foldable aluminium frame, the Flex combines portability with strength, supporting riders up to 150kg. Its design makes it practical for commuting, storing in compact spaces, or transporting in a car, while still delivering mountain bike performance.
Cyrusher Flex – Full-Suspension Hybrid That Handles City and Trail
The Cyrusher Flex Electric Mountain Bike 250W 48V 15Ah is a full-suspension fat-tyre e-MTB designed to double as a tough commuter. Its high-step frame and aggressive geometry give you off-road confidence, while rack mounts and lighting keep it practical for weekday miles.
48V 15Ah Removable Battery With 59-Mile Range Potential
A 48V 15Ah lithium-ion battery powers the Cyrusher Flex Electric Mountain Bike 250W 48V 15Ah, offering roughly 59 miles / 80–100 km of pedal-assist range in favourable conditions. The removable, lockable design makes charging straightforward in a flat, office or garage.
Full Suspension and 26” x 4.0” Fat Tyres for True All-Surface Grip
Oil/spring suspension at the front and rear, paired with 26" x 4.0" fat tyres, let the Cyrusher Flex Electric Mountain Bike 250W 48V 15Ah tackle loose gravel, forest tracks and even winter slush with ease. The big contact patch keeps you stable where normal commuter tyres would flounder.
What’s Included in the Box
1 x Cyrusher Flex Electric Bike
1 x Charger
2 x Keys
1 x Tool Kit
1 x User Manual
Assembly Information
Assembly Video
Watch the assembly guide below before first setup.
The Flex uses a removable 48V 15Ah LG-cell battery, with Cyrusher quoting up to 59 miles (95 km) per charge.
Charging typically takes around 7–9 hours. Actual range varies with terrain, rider weight, weather and assist level.
No. The current Flex has a front suspension fork only; it does not use a rear shock. Its 27.5 x 2.6 Kenda tyres are wider than standard commuter tyres but are not 4-inch fat tyres.
Cyrusher recommends riders around 170–200 cm (5'7"–6'7") and lists a maximum payload of 350 lb.
The bike itself weighs about 31 kg with the battery, so it is sturdy rather than lightweight.
The Cyrusher Flex Electric Bike arrives mostly assembled. Final setup normally includes aligning and securing the handlebars, fitting the pedals and completing essential safety checks. Allow approximately 20–30 minutes, or select our professional assembly and PDI service.
The Cyrusher Flex Electric Bike is not fully waterproof. Avoid prolonged exposure to heavy rain, and never submerge or pressure wash the bike or its electrical components. After riding in wet conditions, wipe the bike dry and store it in a dry, sheltered location.