100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Silver REAR FENDERS - BAD DAD SOFTAIL 5” forward and 1” up

5” forward and 1” up on both the 30" and 26" kit

We recommend using both crankcase breathers in engines larger than 95"

Sizes: OSFA

“CAS” you ask

Includes Black Teardrop cover High-strength

100" Sidewinder Big Bore Kit for 1999-'06 HD® Big Twin Models - Silver REAR FENDERS - BAD DAD SOFTAIL 5” forward and 1” upInspired by our Pro Stock Drag Race engines, these updated big bore kit utilizes a Ductile Cast Iron liner wrapped in cast aluminum for optimum thermal conductivity and performance. Bolt in kits do not require machining, rebalancing or engine removal, and include just about everything youll need to complete the installation. The biggest cylinder bore that can be installed in a stock crankcase without machining! Features & Benefits Low friction Ductile