
Drivetrain Parts for High-Power Hub Motors: Freewheel, Cassette and Chain Choices
Choose the right freewheel, cassette and chain for a high-power hub motor e-bike, with HPC parts to consider, including the Sunrace 10 speed freewheel.

HPC Black Lightning: Gearless Hub-Motor E-Bike Specs, Speed & Price
Specs, speed options, range and price of the HPC Black Lightning gearless hub-motor e-bike, and how it differs from the up-to-8kW Black Lightning hub motor and the hub motor conversion kit.

HPC Revolution: Specs, Top Speed, Range & Price of the Original Flagship
Full specs, top speed, range and price of the HPC Revolution hub-motor downhill e-bike, plus how it compares with the Revolution X, W, MX and MX Pro.

Hub Motor Torque Arms: Why High-Power Hub Motors Need One and How to Fit It
High-power hub motors can spin out of the dropout. Learn why a hub motor torque arm matters, when you need one and how to fit it safely.

Disc Rotor Spacers for Hub Motors: How to Align a 6-Bolt Rotor With Your Caliper
How to align a 6-bolt disc rotor on a hub motor with a rotor spacer: measure the offset, choose between the 1mm, 2mm, 2.5mm and 5mm options, install it and fix brake rub.

High Performance Hub Motor Conversion Kit: What Is in the Box, Speed, Range & Power Options
A walkthrough of HPC's complete hub motor conversion kit: what is in the box, the 2-5kW power options, expected speed and range, lead time and warranty, and how to choose a power package.

How E-Bike Motors Work: Hub vs Mid-Drive vs Direct-Drive Explained
