Dennis Kirk Inc.

Piston Assembly - 39.96mm Bore - NX-40005

  • Part #:
    131733S
  • Mfg Part #:
    NX-40005

Piston Assembly - 39.96mm Bore - NX-40005

  • Part #:
    131733S
  • Mfg Part #:
    NX-40005
MSRP: $57.95

Price: $55.05 5% off!
Bore Size
39.96 mm
Make sure this fits your ride
In Stock - 2 on Hand

Namura Piston Assembly - 39.96mm Bore - NX-40005
  • 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

For replacement rings order PART NO. 13-1733SR

Specifications
Bore Size 39.96 mm
Mfg #: NX-40005
Part #: 131733S
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 0.25 lbs
Fitment for Namura Piston Assembly - 39.96mm Bore - NX-40005

Part 131733S fits the following machines

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