Forged Piston Kit for Sportster Engines Stroke 4,250" Bore 3,538" (89,8652 mm ),

Forged Piston Kit for Sportster Engines Stroke 4,250" Bore 3,538" (89,8652 mm ), Positive Dome +12,9cc 10:1 +.040 mm 1340 ccm (80 cui)