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Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045

  • Part #:
    133370S
  • Manufacturer Part #:
    NX-40045

MSRP Price: $174.95

Our Price: $157.46

You Save $17.49 (10%)
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Ships Today! If ordered in:
1 7 HR : 5 2 MIN : 1 7 SEC
Overview of Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045
  • The new HYPERDRYVE line of pistons is composed of a space-age hypereutectic aluminum alloy developed by NASA.
  • Engineered to maintain its high tensile strength up to 700° F(370°C), 50% higher than a conventional cast piston, this gives HYPERDRYVE the strength to perform under operating conditions normally reserved for forged pistons.
  • This revolutionary alloy, combined with our already existing features of machined smooth anodized heads (for better heat reflection) and MOS2 coated skirts (giving you smoother startups and break ins) meets the demands of todays 4-stroke engines.
  • HYPERDRYVE is the exclusive line of pistons for 250 and 450CC motocross bikes, as well as select sport quads.
  • Piston assemblies include ring(s), wrist pin and circlip


For replacement rings order PART NO. 13-3193SR

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

Specs for Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045

Bore Size 94.96 mm
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 1.15 lbs
Specs for Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045
Bore Size 94.96 mm
Type Piston Assembly
Type Piston w/Ring Set
Units Each
Weight 1.15 lbs
Fitment for Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045
See if this part fits your ride

Part 133370S fits the following machines

Yamaha
  • 2013 Yamaha WR450F
  • 2012 Yamaha WR450F
  • 2011 Yamaha WR450F
  • 2009 Yamaha WR450F
  • 2008 Yamaha WR450F
  • 2007 Yamaha WR450F
  • 2006 Yamaha WR450F
  • 2005 Yamaha WR450F
  • 2004 Yamaha WR450F
  • 2003 Yamaha WR450F
  • 2009 Yamaha YZ450F
  • 2008 Yamaha YZ450F
  • 2007 Yamaha YZ450F
  • 2006 Yamaha YZ450F
  • 2005 Yamaha YZ450F
  • 2004 Yamaha YZ450F
  • 2003 Yamaha YZ450F
  • 2006 Yamaha YZ450FSP 50th Anniversary Edition
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Instructions and Manuals for Namura Hyperdryve Piston Assembly - 94.96mm Bore - NX-40045

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