12:1 Piston 95mm Standard Cylinder Top End Rebuild Kit for Yamaha YFZ450 2004-13

95mm Standard Cylinder Top End Rebuild Kit for Yamaha YFZ450

This 12:1 compression top end rebuild kit with a 95mm standard bore piston and cylinder restores compression and power to your Yamaha YFZ450 engine.

Overview

This top end rebuild kit for Yamaha YFZ450 supplies the piston, cylinder, and related top end components needed to refresh a worn engine. The 12:1 compression ratio and 95mm standard bore make it a direct replacement for the original factory spec. This top end rebuild kit for Yamaha YFZ450 suits riders rebuilding a tired motor or refreshing the top end during routine service.

Built For Performance

• 12:1 compression ratio for factory-spec power output
• 95mm standard bore piston for original-spec fitment
• Complete kit bundles the main top end components
• Designed as a direct replacement for stock cylinder and piston
• Supports restored compression and reliable engine operation

Fits These Machines

• for Yamaha YFZ450 (2004-2013)

On-The-Job Use

• Rebuilding a top end after low compression or oil burning
• Refreshing the piston and cylinder during scheduled engine service
• Restoring power on a high-hour YFZ450 engine

Specs At A Glance

Good To Know

Q: Is this a standard bore or big bore kit? A: It is a 95mm standard bore kit matching the original cylinder size. Q: Does it require machine work? A: No, the kit uses standard-spec components for direct installation, though proper break-in is recommended.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.