S&S Cycle 106-5555 - 84-99 BT 3-1/2in .010in Bore Forged Stroker Piston Kit
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Description
Description
S&S Cycle 106-5555 - 84-99 BT 3-1/2in .010in Bore Forged Stroker Piston Kit
+.010" 3-1/2'', 9.25:1, 89" Kit
These forged 3-1/2" bore stroker pistons for 1984-'99 HD® Evolution® big twin engines are required for the S&S 89" stock bore stroker kits, which include S&S 4-5/8" stroke flywheels. Pistons are designed to be used with stock cylinder heads or with S&S Performance Replacement heads. Low silicon forged material and advanced S&S piston skirt design result in high strengh and low noise. 3-1/2" +.010" bore.
