Description
The stock piston in your TRX450R has limits—upgrade to the Wiseco 94.00mm kit to reclaim lost compression efficiency and unlock measurable gains in throttle response and acceleration. This precision-engineered piston raises your compression ratio to 13.1:1, delivering the power and durability needed for serious trail riding and competitive use. Built from high-strength aluminum, it’s lightweight enough to improve overall engine efficiency without sacrificing reliability.
Key Specifications:
- Bore diameter: 94.00mm
- Compression ratio: 13.1:1
- Material: High-strength aluminum
- Fitment: Honda TRX450R 2004-2005
- Installation: Bolt-on compatible
- Weight: Lightweight design
- MPN: 4851M09400
- Gasket kit: Sold separately
- Thermal efficiency: Enhanced
- Aftermarket compatible: Yes






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