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Honda CR125R Wiseco Piston Kit – 57.00 mm Bore

Your Price: $193.19

SKU: RE922M05700

In Stock

Wiseco 2 Stroke Racer Elite Piston Kit, 57.00 mm Bore

Wiseco’s Racer Elite series forged 2-stroke pistons deliver industry-first 2-stroke piston design and technology to perform in even the most serious racing conditions. These are the first 2-stroke pistons to be forged from 2000 series alloy, providing even greater tensile strength. ArmorPlating surface treatment on the crown, in the ring groove(s), and in the pin bores protects from harmful operating conditions, while Wiseco’s proprietary ArmorFit skirt coating conforms to the cylinder bore for optimized fitment and performance. For the serious 2-stroke rider and racer, Racer Elite is the only choice.

  • Designed for full-race 2-stroke applications
  • Engineered, forged, and machined in the USA in Mentor, OH
  • First 2-stroke piston to be forged with 2000-series alloy, providing greater tensile strength
  • ArmorPlating surface treatment on crown, in ring groove and pin bores protext from harmful detonation, friction wear, and ring micro-welding
  • ArmorFit skirt coating conforms to the cylinder bore for optimized fitment, translating to optimized performance
  • High-quality ring(s), wrist pin(s), and circlips included

GTIN: 00193564138422

Product Series

2 Stroke Racer Elite Series

Included Components

Ring Set #2244CS, Wrist Pin #S668, CirClip #CW15

Bore Diameter

57.00 MM

Piston Diameter

56.93 MM

Piston Material


Skirt Coating


Piston Oversize

3.00 MM

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
Finished bore of your engine
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