NAMURA NX-40026K Top End Repair Kit

Top End kit includes: piston, rings, wrist pin, clips, top end bearing, and gasket kit

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

Machined Smooth Heads Reflects combustion heat and reduces carbon buildup, protecting the top of the piston. Some tests have shown this feature can increase horsepower and fuel economy by up to 6%

Anodized Domes Increases heat resistance and durability; pistons with anodized domes are 75% stronger than non-anodized pistons

Hypereutectic Casting Process Provides higher silicon content for reduced expansion rates and additional wear resistance; it also has an ability to withstand higher cylinder temperatures

The NAMURA NX-40026K Top End Repair Kit provides a convenient solution for servicing the top end of a compatible engine. Designed for repair and rebuild applications, this kit helps consolidate commonly required top-end components into one package, simplifying parts selection and supporting an organized installation process. It is suitable for professional technicians, powersports specialists, and experienced engine builders performing maintenance or restoring engine performance.
Use the NAMURA NX-40026K when replacing worn or serviceable top-end components during an engine overhaul. A complete top-end service can help address issues associated with normal wear, loss of compression, reduced performance, or required maintenance identified during inspection. Before installation, inspect the cylinder, cylinder head, piston, connecting rod, crankshaft, and related hardware to confirm that all mating components are within the manufacturer’s service specifications. Additional parts or machining may be required depending on the condition of the engine and the specific repair.
NAMURA is recognized for producing replacement engine components and repair solutions for powersports applications. This top end repair kit is manufactured for use with the application specified by the corresponding