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Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

  • Part #: 138333
  • Manufacturer Part #: 09-773-2
Our Price: $43.95

Overview of Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

  • Dennis Kirk has high-quality, OEM-type piston assemblies to fit most popular snowmobiles
  • These pistons more closely match the original equipment in ring design, construction and weight than our other aftermarket pistons
  • Its not necessary to replace both pistons in a twin-cylinder engine if you need only one
  • All piston assemblies include rings(s), wrist pin and circlips


  • Replacement Ring Set: 138333R
    Replacement Wrist Pin: S631
    Replacement Circlips: 14420

    NOTE: Dennis Kirk recommends the following preliminary work to be performed by a qualified mechanic prior to installing new pistons. If the old piston has failed, determine the cause and remedy the problem before replacing. Air leaks and/or a lean fuel mixture are the two biggest causes of burned pistons. In cases where any part of the old piston is broken or burned through, the crankcase should be disassembled and throughly flushed of any debris.

    Our pistons, rings and kits are sold by application and bore size. Please note that STANDARD and OVERSIZES are not indicated. To get the correct part, you must know the standard bore size to make sure you are ordering either the standard or correct amount of oversize that you need. If you have any questions, please call Technical Service.

Specs for Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

Bore Size 78.5 mm
Type Piston Assembly
Type - Pistons & Piston Rings Piston w/Ring Set
Units Each
Weight 1.18 lbs

Specs for Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

Bore Size 78.5 mm
Type Piston Assembly
Type - Pistons & Piston Rings Piston w/Ring Set
Units Each
Weight 1.18 lbs

Fitment for Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

See if this part fits your ride

Part 138333 fits the following machines

Ski-Doo
  • 1999 Ski-Doo Formula 670 Dlx
  • 1993 Ski-Doo Formula Mach 1
  • 1993 Ski-Doo Formula Mach 1 w/2-up seat
  • 1993 Ski-Doo Formula Mach 1 XTC
  • 1993 Ski-Doo Formula Mach 1-2
  • 1996 Ski-Doo Formula SS
  • 1995 Ski-Doo Formula SS
  • 1999 Ski-Doo Formula Z 670
  • 1998 Ski-Doo Formula Z 670
  • 1996 Ski-Doo Grand Touring 670 SE
  • 1995 Ski-Doo Grand Touring 670 SE
  • 1994 Ski-Doo Grand Touring 670 SE
  • 1996 Ski-Doo Mach 1
  • 1995 Ski-Doo Mach 1
  • 1994 Ski-Doo Mach 1
  • 1998 Ski-Doo MX-Z 670
  • 1997 Ski-Doo MX-Z 670
  • 1998 Ski-Doo Summit 670
  • 1997 Ski-Doo Summit 670
  • 1996 Ski-Doo Summit 670
  • 1995 Ski-Doo Summit 670
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Instructions and Manuals for Parts Unlimited OEM-Type Piston Assembly - 78.5mm Bore - 09-773-2

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