When looking for BionX cassettes we highly recommend using Shimano cassettes. These fit perfectly on all BionX kits that require either an 8 speed, 9 speed or 10 speed cassette.
We always recommend using new BionX cassettes by Shimano on all new electric bike kits for optimal performance. Installing a cassette is quick and easy and requires the use of a cassette removal / installation tool like this one:
To determine which cassette is required, simply count how many gears (speeds) you have on the rear of the bike that the BionX kit will be installed on and select the appropriate number form the drop down list.
BionX Cassette Specifications:
8 Speeds: 11-13-15-18-21-24-28-32 teeth, chrome plated finish
9 Speeds: 11-12-14-16-18-21-24-28-32 teeth, Ni plated finish
10 Speeds: 11-13-15-17-19-21-24-28-32-36 teeth, Ni plated finish.