- High-flow 2.250" chrome moly gerotor gears for increased oil volume
- Precision-machined relief valve; bench tested to seat at 30 psi, pop-off 55–60 psi
- 42% more scavenge volume and 68% more oil to bearings versus stock
- Magnet protection and corrected passages to reduce wet sumping and blow-by
- Requires matching high-flow cam plate (part #0932-0192) for optimized scavenge
Complete oil system upgrade for M8 that increases oil flow, scavenge volume and pressure; reduces engine and oil temperatures; includes pump, lifters, camplate and installation hardware.
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.
High-quality neck post bearing for reliable steering and long-lasting performance.
Reduces rocker arm end play and engine noise. Recommended side clearance: 0.0035" - 0.005". Helps limit wear on M8 rocker standoffs. Professional installation required. Made in the USA.
- Premium Beehive® springs for high-lift, steep-ramped cams.
- Allows up to 0.750" lift; dyno proven and track tested.
- Kit includes lightweight titanium retainers, chromoly seats, shims, locks and Viton® seals; made in USA.
High Load Beehive® valve spring kit engineered for extreme fatigue life and high-lift camshafts; allows up to 0.750" lift.
High-temperature resistant seals with a spring-loaded wiper for low-friction oil control. Made in the USA.
High-quality Viton® valve guide seals with spring-loaded wiper; made in the USA.
Direct bolt‑in Endurance Beehive® valve spring kit; up to 0.565" lift, includes seals, seats, shims and locks; fits 6.00 mm valve stems.
High Load Beehive® spring kit for V-Twin performance. Direct bolt-in up to 0.565" lift. Recommended for +0.540" lift camshafts. Includes retainers, seats, shims, locks and Viton® seals.
- Heat-treated chromoly ovate wire springs.
- Hand measured and labeled for coil bind and open height.
- Lightweight 7° steel or titanium retainers reduce valve weight.
- Includes seats, shims, locks and Viton® seals with stem wipers.
- Direct replacement for specified Harley-Davidson cams; up to 0.585" lift.
High-quality machined valve locks that secure the valve retainer to the valve stem and prevent valve drop.