Namura Top End Repair Kit (1.00mm Oversize – 79.46mm) NA-10007-4K

Namura Top End Repair Kit (1.00mm Oversize – 79.46mm)

Part Number: NA-10007-4K

Upgrade or rebuild your ATV's top end with performance and reliability using this complete Namura Technologies Top End Repair Kit. Designed to meet or exceed OEM specifications, this kit features high-silicon hypereutectic aluminum construction and premium skirt coatings for maximum durability and reduced engine wear.

Key Features:

• MOS2 (Molybdenum/Teflon) Coated Skirts: A rolled-on application process creates a bond up to 10 times stronger than standard spray coatings, reducing friction, optimizing heat transfer, and helping prevent cold seizures.  

   

• Anodized Domes: Increase heat resistance and overall structural strength—up to 75% stronger than non-anodized pistons.  

   

• Machined Smooth Heads: Reflects combustion heat to reduce carbon buildup, protecting the piston head and optimizing engine efficiency.  

   

• Hypereutectic Casting: High-silicon aluminum alloy limits thermal expansion under extreme temperatures, ensuring consistent performance and resistance to thermal breakdown.  

   

• Premium Riken Rings: OEM-quality ring set included for ideal compression sealing and durability.  

   

What’s Included:

• (1) Namura 79.46mm Oversize Piston (+1.00mm)  

   

• (1) Complete Set of OEM-Quality Riken Rings  

   

• (1) Wrist Pin & Circlips  

   

• (1) Complete Top-End Gasket Set

Fitment:

• 2000–2006 Honda TRX350 Rancher 350 (2x4 & 4x4)  

   

  • TRX350TM / TRX350TE (Rancher 2WD / ES)  

     

  • TRX350FM / TRX350FE (Rancher 4WD / ES)

⚠️ Important Measurement & Fitting Notice:

This kit is a 1.00mm Oversize (+1.00mm) kit requiring a 79.46mm cylinder bore. Always measure your cylinder accurately prior to installation to ensure proper piston-to-wall clearance.