NAMURA NX-40008 Standard Piston Kit for Yamaha

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-40008 Standard Piston Kit is designed for Yamaha applications requiring a reliable standard-size piston replacement. This kit provides a practical solution for restoring engine performance when the original piston has experienced wear or damage. Built for compatibility with the applicable Yamaha engine configuration, it is intended for professional installation and precise service work.

As a standard-size replacement, the NAMURA piston kit is suited for engines that remain within the manufacturer’s original bore specifications. Using the correct piston size helps support proper cylinder fit, compression, and dependable engine operation. Before installation, inspect the cylinder, piston clearance, rings, wrist pin, circlips, and related components to confirm that all parts meet service requirements.

The NX-40008 is supplied as a kit, helping streamline piston replacement and engine rebuilding tasks. Its application-specific design makes it a suitable choice for maintenance, repair, or restoration projects involving compatible Yamaha motorcycles, ATVs, or other powersports equipment. Always verify the exact year, model, engine, and service specifications before ordering or installation.

For best results, installation should be completed by a qualified technician using the appropriate Yamaha service procedures and torque specifications. Proper break-in, lubrication, and final inspection are recommended after assembly to help promote consistent performance and long component life. Choose the NAMURA NX-40008 when a dependable standard piston kit is needed for a compatible Yamaha engine.

Features:

• Brand: NAMURA

• Part Number: NX-40008

• Application: Compatible with select Yamaha engine configurations

• Piston Size: Standard-size replacement for original-bore applications

• Product Type: Piston kit

• Installation: Intended for professional engine repair and rebuilding