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Namura Piston Assembly - 95mm Bore - NA-40007

  • Part #:
    133342S
  • Manufacturer Part #:
    NA-40007

MSRP Price: $124.95

Our Price: $112.46

You Save:
$12.49 (10%)
2 on Hand

Overview of Namura Piston Assembly - 95mm Bore - NA-40007

  • 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. 13-3342SR

    Included items:
    (1) Piston
    (1) piston pin
    (2) circlips
    (1) Ring set, includes (1) top ring, (1) second ring, (2) oil rings and (1) oil ring spacer
    No instructions

Specs for Namura Piston Assembly - 95mm Bore - NA-40007

Bore Size 95 mm
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 1.40 lbs

Specs for Namura Piston Assembly - 95mm Bore - NA-40007

Bore Size 95 mm
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 1.40 lbs

Fitment for Namura Piston Assembly - 95mm Bore - NA-40007

See if this part fits your ride

Part 133342S fits the following machines

Yamaha
  • 1999 Yamaha SRX 600
  • 1998 Yamaha SRX 600
  • 1987 Yamaha TT600
  • 1986 Yamaha TT600
  • 1985 Yamaha TT600
  • 1984 Yamaha TT600
  • 1995 Yamaha XT600
  • 1994 Yamaha XT600
  • 1993 Yamaha XT600
  • 1992 Yamaha XT600
  • 1991 Yamaha XT600
  • 1990 Yamaha XT600
  • 1989 Yamaha XT600
  • 1988 Yamaha XT600
  • 1987 Yamaha XT600
  • 1986 Yamaha XT600
  • 1985 Yamaha XT600
  • 1984 Yamaha XT600
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Instructions and Manuals for Namura Piston Assembly - 95mm Bore - NA-40007

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