Crankcase clearance modification required for installation Dedicated forging and race proven designs CNC machined One or Two High-Performance Rings depending on your vehicle Highest quality, alloy pin Superior strength/weight ratio utilizing Aerospace alloy Extended life and sustained power Chosen by top race teams, in all forms of racing Kit Includes: Piston Rings Circlips Wrist Pin Note: Cylinder sleeving and/or bore and renickasil required for oversizes