Built, safety checked and delivered ready to ride by our team.
Usually 5–7 working days
£99.99
Optional service
Built & Delivered Ready To Ride
Select this if you want your electric bike assembled, inspected and prepared by TrailSurge before delivery. Once completed, it will be delivered ready to ride by our team.
Handlebar and cockpit setupBrake setup and adjustmentGear indexing and drivetrain checkTyre pressure and wheel checkPedal and key bolt checkBattery, display and PAS checkLights and controls checkFinal PDI safety inspection
Once completed, your electric bike is secured for delivery and delivered ready to ride by our team. Please allow around 5–7 working days.
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Home Delivery
Tracked options shown at checkout
Delivery options
Choose your delivery option at checkout. Availability may vary by product, stock location and postcode.
Standard Home Delivery
3–5 working days
Our standard tracked home delivery service for most UK mainland orders.
Next Day DeliverySelected items
Available at checkout on selected in-stock items only. If Next Day Delivery is available for your order, it will appear before payment.
Trusted delivery partners
Tracking details are sent once your order has been dispatched
Some large, heavy or specialist items may arrive with a dedicated courier
Remote areas, Highlands, islands and non-mainland postcodes may require extra time or a delivery surcharge
Returns
30-day returns on unused items
Used items cannot be returned for change of mind
Click & CollectCollect from our Nuneaton workshop
Collect from our Nuneaton workshop
We have a workshop in Nuneaton where selected orders can be collected
If the item is not already at the workshop, we can usually transfer stock here for collection
To choose collection, go to checkout and select Pickup in store
We will confirm when your order is ready before you travel
Please wait for our confirmation before visiting, as some products need to be transferred to the workshop first.
Warranty & Price PromiseCover, exclusions and matching policy
Electric Bike Warranty
Cover varies by brand and model. See our warranty page for full terms.
Manufacturer cover usually applies to defects under normal use.
Batteries, chargers, chains, brake pads, tyres and tubes may have limited cover.
Wear, punctures, damage, water ingress and mods are usually excluded.
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3 monthly payments of £0.00
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clearpay
Pay in 4 with Clearpay
4 interest free payments of £0.00
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Klarna.
Pay in 3 with Klarna
3 monthly payments of £0.00
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Pay Monthly
Payment Options at Checkout
From 3 to 12 months, product dependent
Options shown at checkout.
Pay monthly and split payment options are shown at checkout. Availability depends on order value, product, eligibility, provider checks and provider terms.
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 inside the box?
1X Cyrusher Flex Electric Bike
1X Charger
2X Keys
1X Assembly Tools
1X Assembly User Manual
Assembly Information
Watch the assembly guide below before first setup.
The Cyrusher Flex comes mostly assembled and only minor things need to be assembled. This should not take longer than 20-30 minutes to do.
The Cyrusher Flex is water-resistant and suitable for riding in light to moderate rain. It is not fully waterproof and should not be submerged. Short term, your product can get a little wet and be in the rain, but any long-term exposure can cause serious problems.
Yes — this model is road legal in the UK. It’s classed as an EAPC (electric assist bicycle), so it can be ridden on public roads and cycle paths like a standard bike, without any issues from the police.