ARP '16-'17 Ford Focus RS 2.3L Main Stud Kit IS350 ''thick'' and ''thin'' along with

''thick'' and ''thin'' along with a cushion button disc

BARS on CARS What applies to me and my vehicle

The EVO L QRT is FIA approved

Innovate MTS serial in/out

ARP '16-'17 Ford Focus RS 2.3L Main Stud Kit IS350 ''thick'' and ''thin'' along with*Main Studs* There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in