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Piston Assembly - 46.96mm Bore - NA-40080

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Piston Assembly - 46.96mm Bore - NA-40080

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MSRP: $42.95

Price: $34.36 20% off!
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Namura Piston Assembly - 46.96mm Bore - NA-40080
  • 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 its slightly worn, avoiding an expensive sleeve installation
  • Piston assemblies include ring(s), wrist pin and circlips

  • For replacement rings order PART NO. 13-3347SR

NOTE: Does not have machine smooth dome

Part #: 133347S
Mfg #: NA-40080
Bore Size 46.96 mm
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 0.30 lbs
Fitment for Namura Piston Assembly - 46.96mm Bore - NA-40080

Part 133347S fits the following machines

  • YFM80 Badger 1994-2001
  • YFM80 Moto 4 1986-1988
  • YFM80G Grizzly 2005-2008
  • YFM80GH Grizzly Hunter Edition 2006-2008
  • YFM80R Raptor 2005-2008
  • YFM80W Raptor 2002-2004
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