S&S complete Evo & Twin Cam Motors with 4-1/8″ Bore, running the wider S&S cylinder stud bolt pattern. This changes the base gasket.
* MLS 0.040″ thick Head Gaskets (OEM)
* Remember to check your clearances.
* Will Not Work on OEM cases with 124ci Hot Set Up Kit.
* Will Not Work on S&S Dyna Engines 2006-2017
* Will Not Work on SE cases with 124ci TC124B built Hot Set Up.
MFR PART No: C10041
ROLLIES PART No: CG-C10041
