Namura Piston, Gasket Kit for Yamaha XT225 TT-R225 TT-R230 .020 Over Bore 70.5mm

Namura Piston and Gasket Kit for Yamaha

This Namura piston and gasket kit is a direct replacement for Yamaha XT225, TT-R225, and TT-R230 models, featuring a .020 over bore size of 70.5mm for engine rebuilding and performance restoration.

Overview

The Namura piston and gasket kit provides all necessary components for a top-end rebuild on Yamaha dual-sport and off-road motorcycles. This kit includes a precision-machined piston, rings, wrist pin, and a complete gasket set, designed to restore compression and power. Ideal for the XT225, TT-R225, and TT-R230, this .020 over bore piston (70.5mm) accommodates cylinder wear and refurbishes your engine.

Built For Performance

• Precision-cast piston for consistent weight and strength
• Includes complete gasket set for a thorough rebuild
• .020 oversize bore (70.5mm) compensates for cylinder wear
• High-quality rings for optimal sealing and longevity
• Designed to meet or exceed OEM specifications

Fits These Machines

• for Yamaha XT225
• for Yamaha TT-R225
• for Yamaha TT-R230

On-The-Job Use

• Restoring engine compression in dual-sport motorcycles
• Rebuilding top end for off-road trail riding
• Replacing worn pistons in vintage Yamaha models
• Enhancing performance during engine overhaul

Specs At A Glance

Good To Know

Q: Is this kit compatible with standard bore cylinders? A: No, this is a .020 over bore piston designed for cylinders that have been bored oversize. Use only with a cylinder bored to 70.5mm.

Q: Does the gasket set include all necessary seals? A: Yes, the included gasket set covers the cylinder base, head, and valve cover for a complete top-end seal.

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