fbpx

Free Shipping Over $250, No Code Needed!

Notice: Product Images may differ from the actual product. Image may be a representation of this item.

Honda Wiseco Top End Kit – 85.50 mm Bore


Your Price: $263.52

SKU: PK1032

Estimated Shipped Date 3-4 Weeks

Wiseco 4 Stroke Forged Series Piston Kit, 85.50 mm Bore, 10:1 CR

The Wiseco team has remained at the forefront of powersports performance through every era and evolution, including the development of high-performance 4-strokes. Today, Wiseco’s forged 4-stroke pistons are designed for each specific engine application and built to the tightest tolerances for the ultimate combination of performance and strength. Proven at every level of riding, Wiseco 4-stroke pistons are ready to deliver the power and reliability you’re looking for.

  • Engineered, forged, and machined in the USA in Mentor, OH
  • Designed and built for each specific 4-stroke powersports engine
  • Improved tensile strength of forged material optimizes strength and service life
  • Dedicated forgings allow for optimized strength-to-weight ratio
  • Includes high-quality piston rings, wrist pin(s), and circlips

GTIN: 00193564148148

Product Series

4 Stroke Forged Series

Included Components

Piston #4606M08550, Ring Set #8550XX, Wrist Pin #S520, CirClip #CW20, Gasket #W5514

Bore Diameter

85.50 MM

Piston Diameter

85.45 MM

Compression Ratio Actual

10:1

Piston Material

2618

Skirt Coating

No

Piston Oversize

0.50 MM

Years

2014
2013
2012
2011
2010
2009
Show All

Makes

Honda

Models

TRX400EX Sportrax
TRX400X
XR400R
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