Namura Technologies NA50019K Top End Repair Kit Standard Bore 98.94mm

The Namura Technologies NA-50019K Top End Repair Kit is a complete, all-in-one solution for restoring your powersports engine to peak operating condition. Designed as a standard bore (98.94mm) kit, it delivers everything needed for a full top-end rebuild in a single, convenient package — eliminating the guesswork of sourcing individual components separately.

Kit Includes:

• Piston
• Piston rings
• Wrist pin
• Wrist pin clips
• Top end bearing
• Complete top end gasket set (manufactured to OE specifications)

Key Features:

• MOS2 (Teflon/Molybdenum) Coated Skirts — Applied via a rolled-on process that bonds 10 times stronger than typical spray-on coatings, delivering increased heat transfer, reduced friction, and protection against cold seizures.
• Machined Smooth Heads — Reflects combustion heat and reduces carbon buildup on the top of the piston. This feature has shown the potential to improve horsepower and fuel economy by up to 6% in testing.
• Anodized Dome — Significantly increases heat resistance and overall durability. Anodized dome pistons are approximately 75% stronger than non-anodized counterparts.
• Hypereutectic Casting Process — The higher silicon content of the casting reduces thermal expansion rates, improves wear resistance, and allows the piston to withstand elevated cylinder temperatures.
• OE-Spec Gaskets Included — The bundled top end gasket kit is manufactured to OE specifications with no trimming or fitment issues required.

The NA-50019K is engineered as a direct aftermarket replacement, offering a cost-effective alternative to cylinder replacement. Whether you're restoring an ATV, UTV, or off-road motorcycle, Namura's complete top end kit provides a high-quality rebuild solution designed for durability and reliable long-term performance.