Namura Piston Kit for Yamaha many XT225, TT-R225 & TT-R230 Standard Bore 70mm

Namura Piston Kit for Yamaha

This piston kit is designed to restore compression and performance in Yamaha XT225, TT-R225, and TT-R230 models with a standard bore of 70mm.

Overview

The Namura piston kit replaces the original piston, rings, and pin in Yamaha XT225, TT-R225, and TT-R230 engines with a 70mm standard bore. It is a direct-fit aftermarket solution for rebuilding top-end power on these dual-sport and trail bikes. The kit includes all necessary components for a complete piston replacement.

Built For Performance

• Precision-machined 70mm piston matches factory bore specification
• High-silicon aluminum alloy reduces expansion and improves ring seal
• Includes piston rings, wrist pin, and circlips for a complete rebuild
• Designed to meet or exceed OEM tolerances for reliable operation
• Lightweight design reduces reciprocating mass for quicker throttle response

Fits These Machines

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

On-The-Job Use

• Rebuilding top end on Yamaha XT225 dual-sport motorcycles
• Restoring compression on Yamaha TT-R225 and TT-R230 trail bikes
• Replacing worn pistons during engine overhauls on these models
• Upgrading to a fresh piston when original is out of spec or damaged

Specs At A Glance

Good To Know

Q: Does this piston kit come with a new cylinder? A: No, this kit replaces only the piston and related hardware; the cylinder must be in serviceable condition or reconditioned separately.

Q: Can I use this piston on an XT225 with a different bore? A: No, this is a standard 70mm bore piston; it will not fit oversize or different displacement cylinders.

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