Wiseco Piston Kit for Honda TRX450R 2004-2005 94mm PK1070

If you're running a Honda TRX450R and pushing performance limits, a worn or damaged piston directly tanks your power output and engine reliability. The Wiseco PK1070 kit replaces your entire top-end assembly with precision-forged components engineered to handle sustained high-RPM operation without degradation. You get a complete, matched system—piston, rings, wrist pins, and gaskets—all designed to work together seamlessly, eliminating compatibility guesswork.

Wiseco's high-silicone forged stock minimizes thermal expansion, critical for maintaining tight ring seal and preventing blow-by under aggressive riding. This kit gives you the durability and performance consistency that separates reliable builds from ones that fail mid-season.

• 94mm bore diameter
• Forged piston construction
• High-silicone bar stock
• Includes piston, rings, wrist pins
• Circlips and gasket set included
• Wiseco-matched ring set
• 2-cycle engine application
• Precision-engineered tolerances
• Minimal thermal expansion
• Honda TRX450R 2004-2005 specific
• Use only Wiseco rings included