Fortified stainless steel valve kit for intake and exhaust; reduces wear and friction. Made in USA.
Active filters
Complete kit with Black Diamond™ and White Diamond® valve options; sold as a complete kit for one engine.
Specialized surface treatment strengthens valves to reduce friction, resist corrosion, and improve wear properties; compatible with leaded and unleaded fuels.
Hardened engine valves reduce wear and friction; compatible with leaded and unleaded fuels. Made in the USA, supplied as a complete kit.
Progressively wound Kobe CrSi springs with FEA-designed retainers and heat-treated basewashers; uses OEM-style valve keys (sold separately).
High-performance valves engineered for maximum flow and long life.
Precision CNC-forged intake valve, hard-chromed and flow-tested for lightweight strength and long service life.
OEM-style cast iron valve guide machined to precision tolerances. Compatible with no-lead fuel. Made in the U.S.A.
Progressive beehive springs for improved valve control and reduced coil mass.
Includes Posi-Loc™ style retainers and heat-treated basewashers.
Made in the USA; OEM-style valve keys sold separately.
Forged performance replacement for stock hydraulic roller lifters. 100% tested and made in the U.S.A.
Mounts S&S E/G or Keihin CV style air cleaners to Mikuni HSR 42/45 carburetors. Made in the USA.
Includes rings for one piston only. Designed to fit only matching pistons.