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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21
Wristpin diameter is
Replacement Twin Cam "A" engine cases for stock H-D chassis only (carb and EFI)
Big Bore kit yields excellent results with stock cylinder heads
forged big bore flattop pistons
Designed specifically for use with monster bores and ported heads (not recommended for stock bore engines)
S&S CYCLE 129" Big Bore Cylinder Kit - Wrinkle Black w/o Highlighted Fins - For 107" Engine - M8 910-0844 Automotive/UTV Tires - On Road Wristpin diameter is129" Big Bore Cylinder Kit Wrinkle Black w o Highlighted Fins For 107" Engine M8 Bolt on without requiring machining of the crankcase, Original engine serial numbers are retained, MLS (multi layered steel) head gaskets, Retains stock engine height, Includes cam cover badge, All necessary gaskets and hardware required for installation is included, Made in the USA
