The Namura NA-10007-4 Piston Kit is designed as a direct OEM replacement for the Honda TRX350 Rancher (1999-2006) with a bore size of 79.50mm. Manufactured to exact OEM specifications, this piston kit requires no modifications or dimensional adjustments. The kit includes a piston, a set of OEM-quality Riken rings, a wrist pin, and circlips. Namura pistons feature MOS2 (Molybdenum/Teflon) skirt coatings, high-silicon aluminum construction, and anodized domes for durability. A, B, and C pistons are available to extend the life of Nikasil, SCEM, Boron Composite, and Ceramic Cylinders.

Features

• Direct OEM replacement with no modifications required


• Manufactured to exact OEM specifications


• Includes piston, Riken rings, wrist pin, and circlips


• MOS2 (Molybdenum/Teflon) skirt coatings for reduced friction


• High-silicon aluminum construction with anodized domes


• A, B, and C piston sizes available for extended cylinder life

Specifications

• Bore Size: 79.50mm


• Manufacturer: Namura


• Piston Material: High-silicon aluminum

Cross-Reference OEM Part Numbers

• Namura NA-10007


• Riken Ring Set (STD): 13010-HN5-671 / 13010-HN5-672


• Piston (Standard): 13101-HN5-670


• Piston (Oversize 1.00): 13105-HN5-670


• Riken Ring Set (Oversize 1.00): 13014-HN5-671 / 13014-HN5-672

Vehicle Fitments

• Honda TRX350 Rancher (1999-2006)