Wiseco Pistons

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POWERSPORT

Yamaha®
ATV (4-Stroke)
Individual Pistons


Gaskets
Wiseco recommends replacing the Top End Gasket and
Bearing (if applicable) when replacing a piston.
Pistons are supplied with rings, wrist pins & circlips, unless noted otherwise View sample piston

  Models

  Kit Part #

Bore
x
Stroke

  
Displ.
  (cc)

  Bore
  Size
  (mm)

  Over
  Sizes
  (mm)

  Price

 YFM250 Timberwolf 1992-01  4675M07100
 71
 230  71  STD $125.10  
 YFB250 Bear Tracker 1999-02  4675M07150
 x
 233  71.5  0.5 $125.10  
 8.7:1 Compression  4675M07200
 58
 236  72  1 $125.10  
Replacement ring style is stamped on piston dome - ie. "C" for XC, "G" for XG and "H" for XH