Cyrusher XF900 Pro

The XF900 Pro is a fat-tire mountain e-bike built in a motorcycle-inspired silhouette, with a linkage full-suspension frame and a dual-crown front fork rather than the single-crown fork used on most e-bikes in its class. It is aimed at riders who want the stance and solidity of a moto-style machine with pedals and gears still in place, on terrain that ranges from paved roads to gravel, dirt tracks and soft ground.

A 750W XAD 48V brushless rear hub motor rated at 85 N-m drives the bike, fed by a 48V 13Ah pack built from 18650 cells and rated at 624Wh. Cyrusher puts range at up to roughly 50 miles in low assist under favorable conditions, and the pack is rated for 800 charge cycles. The battery weighs 8.4 lb and lifts out of the frame, so it can be charged and stored indoors instead of leaving the whole bike plugged in. The supplied 48V 2.0A charger takes about seven to eight hours for a full refill, on or off the bike.

Suspension is handled by an XR-3 Air 26" dual-crown fork with hydraulic lockout at the front and an oil-spring shock measuring 210 mm by 32 mm at the rear, so the rider can firm the fork up for road riding and release it for rough surfaces. Braking is HD-E500 fully hydraulic discs on 180 mm 2.3 mm rotors front and rear with sintered pads, wired to cut motor power the moment the levers are pulled. Chaoyang 26" x 4.0" skinwall tires at 30 TPI sit on 36-hole P75 rims, and a Shimano 7-speed drivetrain with an MF-TZ500 14/28T freewheel keeps usable pedaling gears available with or without assist.

At 71.2 lb with the battery fitted and a 350 lb rated payload, the XF900 Pro is substantial but manageable, with a 74 cm standover and a 124 cm wheelbase giving it a long, planted footprint. A K5351-L5-2 smart display shows ride data, backed by a high-brightness headlight and an integrated rear light handling running and braking. One point worth settling before you ride: this bike assists beyond 20 mph and carries a 750W motor, and the rules that decide which category it falls into and which roads, paths and trails are open to it are written at state and local level. Those rules differ from one state to the next and often cover rider age, helmet use and trail or sidewalk access, so look up the ones that apply where you ride.

Setup and Accessory Notes

• Cyrusher supplies an assembly guide and expects the owner to complete final setup, following that guide, before the first ride
• Fenders and a rear rack are not fitted as standard and are offered as a separate add-on set
• The battery is removable, so it can be taken off the frame for indoor charging or winter storage
• The frame is fixed and does not fold; the kickstand is a 26" adjustable unit
• Seatpost is 30.9 x 280 mm with a memory foam saddle, and the handlebar is an HB-780
• Cyrusher notes that the XF900 Pro is a different machine from the original XF900, with a revised frame, suspension, lighting and component set, so specifications quoted for the earlier model do not carry over