Billet-machined breather bodies with square sealing faces for reliable umbrella valve sealing.
Longer exit nipples with dual O-rings for improved sealing.
Five internal drain ports engineered to drain while resisting splash-fill.
Billet-machined breather bodies with square sealing faces for reliable umbrella valve sealing.
Longer exit nipples with dual O-rings for improved sealing.
Five internal drain ports engineered to drain while resisting splash-fill.
Precision billet oil pump and matched camplate increase oil pressure and scavenging volumes. Includes camplate relief valve pre-set to 50–60 psi, added oil feed holes and cam journal groove for improved lubrication. Kit includes pump, camplate, retainer plate, and hardware.
Precision-machined oil system packs for M8 engines that increase oil flow, scavenge volume and pressure while reducing temperatures and wet sumping. Includes pump, lifters, high-flow camplate and installation kit.
Replacement spring and plunger assembly for oil pump pressure relief valve — increases pop‑off psi and restores proper bypass control. Bench‑test with PART #3801-0071.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
High-quality neck post bearing for reliable steering and long-lasting performance.