Description
A worn or damaged crankshaft compromises engine reliability and performance across the board—acceleration suffers, power delivery becomes inconsistent, and you risk catastrophic internal failure. The Wiseco WPC131A delivers a complete, ready-to-install solution that restores your TRX400EX to factory specifications without the guesswork of sourcing individual components. This factory-assembled kit eliminates the need for expensive machine work and ensures your engine will handle aggressive riding and high-RPM demands.
Whether you’re rebuilding after a failure or upgrading a tired engine, this crankshaft kit includes precision-matched bearings and gaskets to get your quad back on the track with confidence.
- Double-forged connecting rods
- Shot-peened surfaces
- Corrosion-resistant treatment
- Precision-honed bearings
- Caged needle roller bearings
- Optimized oiling slots
- Factory-assembled and trued
- Meets OEM specifications
- Fits Honda TRX400EX 1999–2004
- Includes bearing and gasket
- High-RPM capable
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