Manufactured by Namura
Kit includes piston, rings, pin, clips, wrist pin bearing & top end gasket kit (you get exactly what is pictured)
Cast piston has super-high silicone content for additional strength
Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life
Piston dome is anodized for superior heat resistance and longer lifespan
Namura gaskets use performance materials to increase durability and provide greater reliability
Includes all gaskets pictured to rebuild top end
Kit is for standard bore size - 54.00mm
Size A piston is 53.94mm
Compression ratio of 10.8:1
Made in Taiwan


Namura - Top End Repair Kit Standard Bore - NX-40001K


  • 2002 Yamaha YZ125
  • 2003 Yamaha YZ125
  • 2004 Yamaha YZ125

YZ125 02-04 Namura - Top End Repair Kit Standard Bore - NX- 40001K1

Excluding Sales Tax