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Namura Piston Assembly - 66.34mm Bore - NX-10026

  • Part #: 131731S
  • Manufacturer Part #: NX-10026

MSRP Price: $78.75

Our Price: $72.45

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$6.30 (8%)
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Overview of Namura Piston Assembly - 66.34mm Bore - NX-10026

  • 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 replatling required for oversizes

Specs for Namura Piston Assembly - 66.34mm Bore - NX-10026

Bore Size 66.34 mm
Type Piston Assembly
Type - Pistons & Piston Rings Piston w/Ring Set
Units Each
Weight 0.80 lbs

Specs for Namura Piston Assembly - 66.34mm Bore - NX-10026

Bore Size 66.34 mm
Type Piston Assembly
Type - Pistons & Piston Rings Piston w/Ring Set
Units Each
Weight 0.80 lbs

Fitment for Namura Piston Assembly - 66.34mm Bore - NX-10026

See if this part fits your ride

Part 131731S fits the following machines

Honda
  • 1996 Honda CR250R
  • 1995 Honda CR250R
  • 1994 Honda CR250R
  • 1993 Honda CR250R
  • 1992 Honda CR250R
  • 1991 Honda CR250R
  • 1990 Honda CR250R
  • 1989 Honda CR250R
  • 1988 Honda CR250R
  • 1987 Honda CR250R
  • 1986 Honda CR250R
5.0 / 5.0
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5 / 5
awesome product
product is good for the price. If you are an extreme rider you might want to with a different piston.
December 16, 2015
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Instructions and Manuals for Namura Piston Assembly - 66.34mm Bore - NX-10026

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