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Polaris Wiseco Top End Kit – 77.50 mm Bore


Your Price: $392.67

SKU: SK1362

In Stock

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Wiseco 2 Stroke Forged Series Piston Kit, 77.50 mm Bore

Wiseco’s legacy is rooted in 2-stroke piston manufacturing and performance, dating over 80 years ago back to 1941. Today, Wiseco 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design to deliver the performance Wiseco built its name on.

  • Engineered, forged, and machined in the USA in Mentor, OH
  • Designed and built for each specific 2-stroke powersports engine
  • Improved tensile strength of forged material optimizes strength and service life
  • Dedicated forgings and additional lightening operations allow for optimized strength-to-weight ratio
  • Includes high-quality piston ring(s), wrist pin(s), and circlips
Categories: , , ,

GTIN: 00193564159540

Product Series

2 Stroke Forged Series
Included Components

Piston #2448M07750, Ring Set #3051KD, Wrist Pin #S640, CirClip #CW22, Gasket #W6597
Bore Diameter

77.50 MM
Piston Diameter

77.35 MM
Skirt Coating

Yes
Piston Oversize

STD

Years

2006
2005

Makes

Polaris

Models

700 Classic
700 Classic Touring
700 Fusion
700 HO Touring
700 RMK
Instructions: Enter a value in the un-shaded boxes below as they pertain to your engine.
Note: For pistons BELOW the block @ TDC – value in box must be a POSITIVE number (.000)
Note: For pistons ABOVE the block @ TDC – value in box must be a NEGATIVE number (-.000)
Note: For a DISH piston – value in box must be a POSITIVE number (0.0)
Note: For a DOME piston – value in box must be a NEGATIVE number (-0.0)
Note: Manipulate the DOME/DISH & PISTON to DECK volumes to get the ratio you want.
Enter the number of cylinders of your engine
Bore
Finished bore of your engine
Stroke
Stroke of your engines crankshaft
Rod Length
Ctr. to Ctr. length of your connecting rods
Gasket Bore
Head Gasket bore diameter
Comp. Gasket
Compressed Head Gasket thickness
Block Deck Height
Center of main bearing bore to top of block
Top Ring Down
Top of 1st ring to top of pistons(FLAT)
Chamber Volume
Cylinder Head chamber volume in CC’s
Dome/Dish Volume
DOME (-) or DISH (+) vol. (theoretical) in CC’s
Piston to Deck
Top of BLOCK to top of piston (FLAT) @ TDC
Click “Calculate” for dimension results.
Total Volume
 
Cylinder Volume
Total cylinder volume in CC’s =
Clearance Volume
All effective vol. above block deck @ TDC in CC’s =
Gasket Volume
Volume of your head gasket in CC’s =
Top Ring Volume
Total volume above the top ring @ TDC in CC’s =
Deck Volume
Volume of area above the pistons @ TDC in CC’s =
Piston Top Land
Piston top land diameter for volume calculations =
1/2 Stroke
1/2 stroke of your engine’s crankshaft in inches =
Compression Ht.
Ctr. of piston pin to top of piston (FLAT) in inches =
Cubic Inches
Cubic inch displacement of your engine =
For the given dimensions, your compression ratio