Description
If you’re running a YZ490 at the track or in competition, the integrity of your piston directly impacts your engine’s reliability and peak power output. The Wiseco S277 wrist pin is engineered to handle the extreme combustion pressures and temperature swings that come with high-RPM racing, giving you the confidence to push harder without worrying about catastrophic failure. Built with precision manufacturing standards, this pin maintains dimensional stability under sustained load—a critical factor when you’re competing at the edge of your engine’s capability.
- CNC-machined construction
- Fits Yamaha YZ490 1982-1990
- MPN: S277
- Minimized thermal expansion
- Reduced bearing wear
- High-strength alloy steel
- Precise tolerances maintained
- Competition-grade durability
- Direct bolt-on fitment
- Professional and amateur approved
