Manufactured by Namura
Kit includes Piston, Rings, Top End Gasket Kit, Pin, Clips, Wrist Pin Bearing (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
Gasket kit includes all gaskets pictured to rebuild top end
Kit is for standard bore size - 54.00mm
Size A piston is 53.95mm
Compression ratio of 10.7:1
Made in Taiwan


Namura Top End Repair Kit Standard Bore - NX-40009K

Fits the following:

  • 2005 Yamaha YZ125
  • 2006 Yamaha YZ125
  • 2007 Yamaha YZ125
  • 2008 Yamaha YZ125
  • 2009 Yamaha YZ125
  • 2010 Yamaha YZ125
  • 2011 Yamaha YZ125
  • 2012 Yamaha YZ125
  • 2013 Yamaha YZ125
  • 2014 Yamaha YZ125

YZ125 05-14 Namura - Top End Repair Kit Standard Bore - NX- 40001K1

Excluding Sales Tax