Top End Service Kit, Stainless Conv., 0.380" Lift, Yamaha®, YFZ™ 450, 2004-2009

Kit Includes:
• Piston, Rings, Clips and Pin – (2618 Alloy Fully CNC Machined Race Piston)
• Complete Top End Gasket Kit by Cometic™
• KPMI® S.S. White Diamond® Valves, Stock Head Dia. (All Valves)
• Complete Dual Spring / High Performance Titanium Retainer Spring Kit

Features:
• Complete piston assembly, gasket kit and valves to rebuild or service your bikes top end
• Cost saving built into purchasing these components as a kit
• Designed specifically for the performance demands of MX Bikes and Quads
• Pistons designed to maintain stock compression
• 2618 Alloy Fully CNC Machined Piston with performance skirt coating
• KPMI® High Performance Valvetrain is known to outlast OEM by twice the service life
• Lightweight Racing Spring Kit compatible with high performance cams

IMPORTANT NOTE:The piston assembly (piston, rings, pin and pin clips) in this kit are designed to work together as a system. When used complete, the piston assembly can be used as an OEM replacement. The individual components are NOT INTERCHANGEABLE with O.E.M. piston assembly components.