Harley 1985-1999 EVO Bathtub (Fits STD Brand Heads Only)
  • Machined from 2618 T6 high tensile forged aluminum
  • Dome/Dish features smooth flowing radii and require no deburring or preparation
  • JE designs are specifically engineered for extreme applications including professional competition
  • Pins, pin fitment, lock and rings included
    • 1985-1999 EVO Bathtub (Std Bore: 3.625")
    Piston Kit Disp Bore Size Over Size Comp Ratio Gram Wt Skirt Style Ring Pin Lock Gasket
    144902 1438cc 3.625" STD 11.5:1 418 Round J150F2-3625 792-2500-14-51C 787-050-MW JC9691
    144903 1446cc 3.635" +.010" 11.5:1 428 Round J160F1-3635 792-2500-14-51C 787-050-MW JC9691
    1985-1999 EVO Bathtub (Std Bore: 3.812")
    Piston Kit Disp Bore Size Over Size Comp Ratio Gram Wt Skirt Style Ring Pin Lock Gasket
    144904 1590cc 3.812" STD 12.0:1 475 Round J10001-3810-5 792-2500-14-51C 787-050-MW JC9693
    144905 1599cc 3.822" +.010" 12.0:1 480 Round J100F2-3820-5 792-2500-14-51C >787-050-MW JC9693