Engine

Active filters
Compact crankcase vent filter for reliable ventilation and easy installation.
Precision-machined tubeless valve with self-sealing hex cap; anchor nut, thrust washer and rubber seal included. May require drill enlargement for Lester™ mags.
Great for ATVs and other tight applications.
Tubeless valve stem with full-length threading and lock nut for secure fit and reliable air retention.
Direct replacement for the stock cam cover. Includes hardware and gasket. Vision window with polycarbonate lens. Multiple finish options. Made in the U.S.A.
Reduces oil temperatures using engine temperature and vehicle speed. Quick 15-minute install; no oil cooler removal. Plug-n-play on M8 models with compatible ECM. Made in the USA.
- Direct replacement for stock cover
- Includes all hardware and gasket
- Polycarbonate lens for a unique internal view
- Available in multiple finishes
- Made in the U.S.A.
Precision CNC-machined component that improves heat dissipation; includes chrome hardware and gasket.
Direct replacement derby cover for OEM primaries; race-inspired design improves heat dissipation. Hardware and gasket included. Made in the USA.