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Yamaha YZ125 Wiseco Piston Kit – 54.50 mm Bore


Your Price: $145.94

SKU: 647M05450

In Stock

Wiseco 2 Stroke Pro-Lite Piston Kit, 54.50 mm Bore

Wiseco’s Pro-Lite is the forged 2-stroke piston that started it all! Wiseco Pro-Lite forged 2-stroke pistons are the result of decades of experience, incorporating the latest in 2-stroke piston manufacturing and design in a part built for all-purpose 2-stroke riding. Designed to offer great value, great reliability, and great performance, Pro-Lite is the staple of 2-stoke pistons!

  • Designed for all-purpose 2-stroke riding
  • Engineered, forged, and machined in the USA in Mentor, OH
  • Great value for reliable fun factor
  • Refreshed performance from the track to the trail
  • Dedicated forging design for strength-to-weight optimization
  • Extra lightening operations for enhanced throttle response
  • High-quality ring(s), wrist pin(s), and circlips included

GTIN: 00193564135650

Product Series

2 Stroke Pro-Lite Series

Included Components

Ring Set #2146CS, Wrist Pin #S514, CirClip #CW16

Bore Diameter

54.50 MM

Piston Diameter

54.45 MM

Piston Material

4032

Skirt Coating

No

Piston Oversize

0.50 MM

Years

1996
1995
1994

Makes

Yamaha

Models

YZ 125
YZ125
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