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

Description↑
• 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.
Specifications↓
Installation Instructions | Click Here |
Type | Intake / Exhaust |
Retainer Material | Titanium |
Valve Lift | 0.380" |
Installed Height | 1.105" |
Seat Pressure | 39# |
Open Pressure | 86# |
@ Lift | 0.380" |
Valve Type | Intake / Exhaust |
Valve Material | White Diamond® Stainless |
Coating | Hard Chrome |
Intake Head Diameter | 27.00mm / 1.063" |
Intake Stem Diameter | 4.5mm/ 0.1765" |
Intake Tulip | 15º |
Intake Overall Length | Outer-3.040" / Center-3.000" |
Exhaust Head Diameter | 28.00mm / 1.102" |
Exhaust Stem Diameter | 5.0mm / 0.1956" |
Exhaust Tulip | 20º |
Exhaust Overall Length | 2.955" |
Remarks | Standard |
Piston Bore Size | 95.00mm |
Unique Identifier No. | FR327789_01GAUS |