Top End

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

Precision-machined from C630Compatible with no-lead fuel and accept any type of valve-stem materialProvide maximum service with chromed valve stemsFeature a tapered nose design for maximum bearing service and minimal port obstruction; improves flow...

One-piece stainless-steel, stellite-tipped valves impregnated by a special nitrided process with .002" depth and .0002" surface buildup to improve wear properties and reduce frictionThis process provides resistance to corrosion; wears superior to hard...

Progressively wound springs using Kobe super-clean, chrome silicon-based wire that is heat treated and shot peenedTight-tolerance, FEA-designed hardened steel Posi-Loc™ style upper retainers to ensure correct assembly height and resist keeper "pull...

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A.

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A.

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A.

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A.

Black Diamond™ valves are CNC machined from one-piece forgings of EV8 Stainless SteelBlack Diamond™ proprietary multi-stage process reduces friction, and provides superior resistance to corrosion and wearMade in the U.S.A.