Namura Standard Bore Size C Top End Repair Kit for Yamaha YZ450F 2003-2005 95mm

Namura Standard Bore Size C Top End Repair Kit for Yamaha

This top end repair kit by Namura provides all necessary components for rebuilding the cylinder of Yamaha YZ450F models from 2003 to 2005 with a standard 95mm bore size.

Overview

This Namura top end repair kit is a comprehensive set designed to restore compression and performance in Yamaha YZ450F engines. It includes a piston, rings, wrist pin, and circlips, specifically sized for the 95mm bore. Riders and mechanics trust this kit for reliable top end rebuilds on 2003-2005 YZ450F models.

Built For Performance

• Includes a precision-machined piston for optimal fit and compression
• High-strength rings reduce blow-by and improve sealing
• Heat-treated wrist pin and circlips ensure durability under high RPM
• Standard bore size avoids the need for cylinder boring
• Namura quality meets OEM specifications for reliable power delivery

Fits These Machines

• for Yamaha YZ450F 2003
• for Yamaha YZ450F 2004
• for Yamaha YZ450F 2005

On-The-Job Use

• Motocross racing requires frequent top end refreshes
• Trail and off-road riding benefits from restored engine power
• Enduro competition demands consistent compression and reliability
• Recreational riding gains extended engine life with timely rebuilding

Specs At A Glance

Good To Know

Q: What is included in the top end repair kit? A: The kit contains a piston, rings, wrist pin, and circlips necessary for a complete top end rebuild on applicable Yamaha YZ450F models.

Q: Do I need to bore the cylinder for this kit? A: No, this is a standard bore size kit intended for cylinders that are within factory specifications, so no boring is required.

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