Hiboy EX9

What the Hiboy EX9 is built for

The Hiboy EX9 is a commuter e-bike, built for daily rides to work, errands and city streets.

It has a 750 W (1,000 W peak) motor and a top speed of 28 mph (45 km/h).

It carries a 557 Wh removable battery and a stated range of up to 62 miles (100 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 Hiboy EX9 weighs 60 lb (27 kg), carries up to 331 lb (150 kg) including the rider, has front suspension, uses a torque sensor, so the motor responds to how hard you pedal and is rated IPX5 against water.

In the United States the Hiboy EX9 sells for $1,200, below the median of $1,499 across 230 commuter e-bikes with a US price, among the more affordable models. That is $2 per watt-hour of battery.

Where the Hiboy EX9 may be ridden

Hiboy EX9 is sold as 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.

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, its 28 mph (45 km/h) top speed is above the 25 km/h at which assistance must stop and its throttle moves it without pedalling, which the pedelec rules allow only as start-up help at walking pace. 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.

Hiboy EX9 safety certification

The brand's listing for the Hiboy EX9 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.