Namura NX-40025-BKA 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

Restore dependable top-end performance with the Namura NX-40025-BKA Top End Repair Kit. Designed for powersports engine service, this kit provides a practical replacement solution for worn or serviceable top-end components. It is identified by Namura part number NX-40025-BKA and is supplied as a complete kit configuration for convenient repair planning and installation.
The Namura top end repair kit is suitable for maintenance, rebuilding, and corrective engine work when the original top-end components require replacement. Using a matched kit can help simplify parts selection and reduce the need to source individual components separately. Before installation, inspect the cylinder, cylinder head, piston area, connecting components, and related hardware to confirm that all mating surfaces and supporting parts are within serviceable condition.
For best results, compare the Namura NX-40025-BKA kit with the application specifications and service manual for the vehicle or engine. Confirm model and year compatibility before ordering, and follow the manufacturer’s procedures for disassembly, cleaning, assembly, torque values, lubrication, and break-in. Proper installation is essential for reliable sealing, consistent engine operation, and long service life. The kit is supplied in a kit format, making it a convenient choice for professional technicians, powersports repair facilities, and experienced enthusiasts completing top-end maintenance.

Features:

• Brand: Namura

• Part Number: NX-40025-BKA

• Product Type: Top end repair kit

• Unit of Measure: Kit

• Application: Intended for powersports engine top-end repair and maintenance

• Service Use: Suitable for rebuilding or replacing worn top-end components

• Installation Note: Verify vehicle and engine compatibility before installation