Cyrusher XF900 Pro

What the Cyrusher XF900 Pro is built for

The Cyrusher XF900 Pro is an electric mountain bike for trails and off-road riding.

It has a 750 W (1,500 W peak) hub motor and a top speed of 28 mph (45 km/h).

It carries a 624 Wh battery and a stated range of up to 68 miles (110 km) on a charge. Real-world range is usually lower than the rated figure: it falls with throttle use, hills, cold weather, rider weight and higher assist levels.

The Cyrusher XF900 Pro weighs 71 lb (32.3 kg), carries up to 351 lb (159 kg) including the rider and has full suspension.

In the United States the Cyrusher XF900 Pro sells for $1,199, close to the median of $1,299 across 22 electric mountain bikes with a US price. That is $2 per watt-hour of battery.

Where the Cyrusher XF900 Pro may be ridden

Cyrusher XF900 Pro is sold as Class 2 (throttle, up to 20 mph) and Class 3 (pedal assist up to 28 mph) under the three-class system most US states use. Class 3 e-bikes are kept off some bike paths and trails, and several states set a minimum age and require a helmet for them. Riders can switch between classes in the settings, and the class it is ridden in decides where it may go.

In the European Union and the United Kingdom an e-bike counts as a bicycle only within the pedelec limits; as specified, its 750 W motor is above the 250 W limit and its 28 mph (45 km/h) top speed is above the 25 km/h at which assistance must stop. A model above those limits is treated as a moped there, with type approval, registration and insurance, unless the brand sells a version set to the European limits.

Cyrusher XF900 Pro safety certification

The brand's listing for the Cyrusher XF900 Pro does not state a UL 2849 or EN 15194 certification. New York City allows only e-bikes certified to UL 2849 to be sold or rented there, and California requires certified batteries from 2026; ask the seller for the certificate before buying.