Wiseco Wrist Pin for Honda TRX400EX 1999-2008 S520

The wrist pin is a critical load-bearing component that directly impacts engine reliability and longevity under extreme operating conditions. A quality wrist pin like the Wiseco S520 reduces deflection and wear on your piston and connecting rod, preventing catastrophic failure during high-RPM running or sustained racing. For Honda TRX400EX owners pushing their machines hard, upgrading to this precision-engineered pin is essential insurance against costly engine damage.

Wiseco's S520 is manufactured using advanced forging and machining processes that optimize material density and minimize thermal expansion—keeping critical tolerances stable whether you're running stock power or modified boost. This means better ring seal integrity, reduced blowby, and more consistent combustion chamber conditions across varying load and temperature scenarios.

• OEM Honda TRX400EX fitment
• Model years 1999–2008
• High-strength forged steel
• CNC-machined precision tolerances
• Reduced thermal expansion
• Minimized piston deflection
• Competition-grade durability
• Bolt-in replacement
• MPN: S520