Namura .040 Over Bore Piston Kit for Yamaha 1993-2001 YZ80 48mm

Namura .040 Over Bore Piston Kit for Yamaha

This .040 over bore piston kit provides a 48mm piston for Yamaha YZ80 models from 1993 to 2001, restoring engine performance after a cylinder bore.

Overview

This Namura piston kit is an aftermarket .040 over bore piston kit designed for Yamaha YZ80 motorcycles. The piston kit includes a 48mm piston, rings, wrist pin, and circlips for a complete top end rebuild. Ideal for maintaining or upgrading your Yamaha YZ80 engine, this piston kit delivers reliable performance.

Built For Performance

• Manufactured from high-silicone aluminum alloy for strength and heat dissipation
• Includes premium piston rings for optimal compression
• CNC-machined wrist pin for precise fit
• Lightweight design reduces reciprocating mass
• Precision-machined to .040 over bore specification
• Kit includes all necessary components for installation

Fits These Machines

• for Yamaha YZ80 (1993-2001)

On-The-Job Use

• Competitive motocross racing
• Trail riding and enduro
• Recreational off-road riding
• Engine rebuilds and top-end overhauls
• High-performance tuning applications

Specs At A Glance

Good To Know

Q: What is the benefit of a .040 over bore piston kit? A: It allows you to refresh a worn cylinder by boring it to a larger size, restoring compression and performance.

Q: Is this kit compatible with stock Yamaha YZ80 pistons? A: This is an aftermarket kit from Namura, not OEM, but designed as a direct replacement for the .040 over bore size.

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