Cosworth YBM Lightweight 5.5” Clutch Flywheel. This lightweight Cosworth YBM flywheel, designed, developed and manufactured in-house by Ark Racing Limited.

Cosworth YBM 7.25 Clutch Standard Flywheel. This lightweight Cosworth DFV flywheel, designed, developed and manufactured in-house by Ark Racing Limited.

Ford YBM 104T (104 teeth) Flywheel. Designed, developed and manufactured in-house by Ark Racing Limited