Engine

Active filters
Replacement hose for reliable fluid routing. Durable construction and straightforward installation.
Easy-to-assemble, high quality. Meets 96-hour salt spray testing. Ships complete with sealing ferrule.
Designed for twin plug heads. Accepts .650"/10mm x 1.0 compression release valves. Sold each.
State-of-the-art compression release valves that reduce hot starts and lower starter and battery loads. Sold as a set and made in the U.S.A.
State-of-the-art design to reduce hot starts and starter/battery loads. Custom molded knobs, sold in pairs, made in the U.S.A.
Made in the USA replacement gasket set that restores proper sealing and reduces leaks. Easy to install with standard tools.
Designed for HD® Evolution OEM replacement. Machined from high‑grade metal with a corrosion‑resistant dark finish. Multipurpose alignment pins. Made in the USA.