Namura na-40004 Piston Kit, Standard Bore 99.97mm, 9.2:1 Compression f

A quality Namura na-40004 Piston Kit, Standard Bore 99.97mm, 9.2:1 Compression for Yamaha from Hook & Hull Co. — built to perform in demanding on-water conditions.

• Marine-grade construction for durability
• Precision-engineered for a correct fit
• Suitable for freshwater and saltwater use

Please check fitment, sizing, and compatibility before purchasing. Professional installation is recommended where required.