Namura Standard Bore Size C Piston Kit for Yamaha YFZ450, YFZ450R & YFZ450X 95mm

Standard Bore Size C Piston Kit for Yamaha

This Namura standard bore size C piston kit provides a direct-fit replacement piston assembly for Yamaha YFZ450, YFZ450R, and YFZ450X ATVs, featuring a 95mm bore diameter for restoring engine compression and performance.

Overview

Designed for Yamaha YFZ450 models, this Namura standard bore size C piston kit delivers a reliable replacement for worn pistons. The 95mm bore piston restores factory compression and power output, making it an ideal choice for rebuilding the top end of your YFZ450, YFZ450R, or YFZ450X engine. This piston kit includes the piston, rings, and wrist pin for a complete top-end overhaul.

Built For Performance

• Precision-machined from high-strength aluminum alloy for durability
• Includes piston rings with proper end gap for optimal sealing
• Hard-anodized skirt reduces friction and extends service life
• Weight-matched to OEM specifications for balanced performance
• Compatible with standard bore cylinders requiring 95mm piston

Fits These Machines

• for Yamaha YFZ450
• for Yamaha YFZ450R
• for Yamaha YFZ450X

On-The-Job Use

• Ideal for rebuilding the top end of sport ATVs
• Commonly used in motocross and trail riding applications
• Replaces worn pistons to restore lost compression and power
• Suited for recreational and competitive off-road use

Specs At A Glance

Good To Know

Q: Does this piston kit come with a wrist pin? A: Yes, the kit includes the wrist pin and circlips, along with the piston and rings, so you have everything needed for installation.

Q: Can this piston be used with stock cylinder bore? A: It is designed for standard bore cylinders that measure 95mm, so it will fit a stock cylinder that has not been overbored.

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