106-5793 | 31/2" Bore Forged Stroker Piston Kits For Stock Heads Or S&S Performance Replacement Heads - +.030" coffee mug Throttle Body Elbow Intake Cover:

Throttle Body Elbow Intake Cover: 81-005-3B

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S&S Cycle 550-0734

106-5793 | 31/2" Bore Forged Stroker Piston Kits For Stock Heads Or S&S Performance Replacement Heads - +.030" coffee mug Throttle Body Elbow Intake Cover:S&S Cycle 106 5793 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" +. 020" bore. Install Instructions Download