Namura Top-End Repair Kit NA-40011K

Bore Size: 84.45mm
Size Over Standard: Standard

• Includes pistons, rings and top end gasket sets (and needle bearings when needed)
• Machined smooth piston crown (unless otherwise noted) to reflect combustion heat while reducing carbon buildup
• Hard anodized piston crown with a hardness of HRB 105
• MOS2 coating to draw heat through piston walls and out the bottom
• Minimized piston expansion and contraction
• Pistons are more resistant to wear and scuffing, expand less with heat and are stronger
• Higher Performance piston without a higher price

Provides you with all the necessary components to complete your rebuild: these include a top-end gasket set, pistons, rings, wrist pins, circlips and silver coated SCM415 high strength chromoly needle bearings where needed.

Piston:

MOS2 (Teflon/Molybdenum) Coated Skirts: A rolled on application process provides a bond that is 10 times stronger than other spray on coatings. Benefits include increased heat transfer, reduced friction and helping to eliminate cold seizures.

Gaskets:

Namura gaskets are manufactured to OE-specs, which means no trimming or fitment issues. Our materials are explicitly selected for their temperature, oil, fuel, and coolant-resistant qualities as well as tested using ASTM standards. Each design is evaluated against rigid quality-control standards to ensure each set meets or exceeds OE performance. Clutch gaskets are available for certain applications.

Brand: Namura
Part Number: NA-40011K

Fitment:

• 2007-2014 YAMAHA YFM450 GRIZZLY
• 2003-2006 YAMAHA YFM450 KODIAK
• 2006-2010 YAMAHA YFM450 WOLVERINE
• 2006-2010 YAMAHA YXR450 RHINO (UTV)

Note: Image is for reference only, actual product may vary slightly depending on your vehicle.