Description
When your TRX400EX’s top-end shows signs of wear or you’re ready to unlock additional performance, a quality piston kit is non-negotiable. Wiseco’s forged construction delivers the strength and thermal stability needed for consistent power across extended riding sessions, whether you’re trail riding hard or pushing the machine in competitive environments. This complete kit eliminates the guesswork—everything you need for a proper top-end rebuild arrives in one box.
Key Technical Features:
- Forged high-silicone construction
- Lower thermal expansion rate
- 87mm bore sizing
- Honda TRX400EX specific
- Fits 1999–2008 model years
- Includes pistons, rings, wrist pins
- Circlips and gaskets included
- Precision-engineered fitment
- Wiseco ring compatibility required
- Complete top-end rebuild solution
- MPN: PK1039
