BSA A65 Starter Motor Kit. A complete replacement of the primary drive with a new case and belt drive assembly that runs dry. *Every conceivable part is included with a new clutch shock absorber unit. You will be able to use the original clutch plates. Developed and manufactured by Ark Racing for use on the Birmingham Small Arms Company (BSA) motorcycle unit engines. See website for details.

An easy fit upgrade option for the Suzuki diffs fitted in many sporting trials cars

Triumph T140 Starter Motor Kit. Developed by Ark Racing for use on the Triumph T140, T120 and other Triumph unit engines.