Description
A worn or damaged piston compromises engine compression, power delivery, and reliability—especially critical for high-performance riding where engine stress is constant. The Wiseco PK1031 piston kit delivers the durability and precision your TRX400EX demands, with a complete top-end rebuild solution that eliminates the guesswork and ensures proper ring-to-piston fitment from day one.
This high-silicone forged aluminum construction resists thermal stress and maintains dimensional stability under aggressive riding conditions, while the included matched ring set, wrist pins, circlips, and gasket kit give you everything needed for a professional-quality rebuild without sourcing multiple vendors.
- High-silicone forged aluminum
- Low thermal expansion
- Matched ring set included
- Wrist pins and circlips
- Complete gasket kit
- Honda TRX400EX 1999–2008
- Wiseco MPN: PK1031
- Bolt-on installation
- OEM-equivalent fitment
