A S&S 103 in. 3-5/8 in. Sidewinder big bore stroker kit is an economical route to a larger displacement engine. This kit contains nearly everything needed to take a stock 74 in. or 80 in. HD® shovelhead engine up to 103 in. displacement.
XMAS BREAK LAST SHIP DATE 18 DECEMBER
📦All new orders placed after that date will be shipped once we return on the 5th January 2026
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