PISTON SYSTEMYZ450F/WR450

Piston System w/ Stainless Steel Valves

• The only safe way to maximize compression; the valve reliefs in the piston are purposely convex and match the geometry of the dishes in the valves
• Conversion to Black Diamond™ stainless steel valves offers up to twice the life of the stock titanium valves
• No loss in performance
• Kit includes: piston, rings, clip and pin, Cometic top end gasket kit, Black Diamond engine valves (standard size) and dual spring titanium retainer springs (.395" lift intake, .0370" lift exhaust)
• Made in the U.S.A.
• Pistons, rings, valves and pin clips in this kit are designed to work as a system, they are NOT COMPATIBLE with the OEM components and should ONLY be used as a kit.