Wiseco Piston Kit Honda TRX450R 2004-2005 4849M09400

The stock piston in your TRX450R limits both reliability and power output—especially if you're pushing higher RPMs or running modified fuel maps. Wiseco's precision-engineered piston kit restores lost performance while delivering the durability needed for sustained high-load riding. This is the foundation upgrade serious TRX450R owners choose when rebuilding or maximizing engine potential.

Wiseco pistons are CNC-machined to exacting tolerances and constructed from premium aluminum alloy, ensuring consistent fit and superior heat dissipation. The lightweight design reduces reciprocating mass, allowing your engine to accelerate more freely and respond crisper to throttle input. Installation is straightforward—no cylinder boring or machine work required.

• Fits TRX450R 2004–2005
• Standard size piston
• CNC-machined aluminum
• Bolt-on installation
• MPN: 4849M09400
• Gasket kit sold separately
• Improved throttle response
• Reduced engine load