• Namura

Namura Piston Assembly - 95mm Bore - NA-40009

  • Part #: 133193S
  • Manufacturer Part #: NA-40009
  • MSRP Price: $103.05
  • Our Price: $93.99
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Overview of Namura Piston Assembly - 95mm Bore - NA-40009

  • High-performance Namura pistons are engineered in the USA, manufactured in Taiwan
  • High-silicon content Hypereutectic cast aluminum material for less heat expansion, tighter clearances, increased hardness, longer life and reduced scuffing
  • Features machined, smooth piston crowns for reduced carbon buildup, increased horsepower and fuel economy
  • Hard anodized crowns are 75% stronger than non-anodized, providing minimal expansion and reducing the chance of cold seizures when combined with Teflon/Molybdenum coated skirts
  • MOS2 (Teflon/Molybdenum) coated skirts perform at the highest standards, reducing friction and heat for added power and longevity
  • Namura rings match the OEM design except as noted
  • -B (.0004 in.) and -C (.0008 in.) fractional oversize pistons, available for some applications, extend the life of your expensive cylinder by renewing the original clearance if it's slightly worn, avoiding an expensive sleeve installation
  • Piston assemblies include ring(s), wrist pin and circlips

  • NOTE: Nikasil Bore; cylinder sleeving or replating required for oversizes

    All piston and ring sizes are indicated by the suffix number/letters as shown in the chart below. Use the PART NO. listed for your machine, and complete it by adding the letter(s) and/or numbers to the end, indicating the exact size needed - standard, fractional or incremental oversize (no cylinder boring or sleeving involved) or regular oversizes, which require boring or sleeving of the cylinder, depending on the material.

    Included Items:
    (1) Pison
    (1) Ring set
    (2) Wrist pin clips
    (1) Wrist pin


Bore Size 95mm
Type Piston Assembly
Units Each
Weight 1.0 lbs

Specs for Namura Piston Assembly - 95mm Bore - NA-40009

Bore Size 95mm
Type Piston Assembly
Units Each
Weight 1.0 lbs

Fitment for Namura Piston Assembly - 95mm Bore - NA-40009

Part 133193S fits the following machines

See if this part fits your ride

2013 Yamaha YFZ450
2012 Yamaha YFZ450
2009 Yamaha YFZ450
2008 Yamaha YFZ450
2007 Yamaha YFZ450
2006 Yamaha YFZ450
2005 Yamaha YFZ450
2004 Yamaha YFZ450
2007 Yamaha YFZ450BB Bill Ballance Edition
2006 Yamaha YFZ450BB Bill Ballance Edition
2004 Yamaha YFZ450LE Limited Edition
2013 Yamaha YFZ450R
2012 Yamaha YFZ450R
2011 Yamaha YFZ450R
2010 Yamaha YFZ450R
2009 Yamaha YFZ450R
2013 Yamaha YFZ450RSE Special Edition
2012 Yamaha YFZ450RSE Special Edition
2011 Yamaha YFZ450RSE Special Edition
2010 Yamaha YFZ450RSE Special Edition
2009 Yamaha YFZ450RSE Special Edition
2007 Yamaha YFZ450SE Special Edition
2005 Yamaha YFZ450SE Special Edition
2007 Yamaha YFZ450SE2 Special Edition 2
2006 Yamaha YFZ450SP 50th Anniversary Edition
2008 Yamaha YFZ450SP Special Edition
2008 Yamaha YFZ450SP2 Special Edition 2
2011 Yamaha YFZ450X
2010 Yamaha YFZ450X
2011 Yamaha YFZ450X SE
2010 Yamaha YFZ450XBB Bill Balance Edition

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