SECTION 4 – NHRA SUMMIT RACING SERIES SECTION 4A – SUPER PRO, PRO, SPORTSMAN Page 4.4 FRAME: 4 ROLL CAGE PADDING Beginning June 1, 2011, roll-cage padding meeting SFI Spec 45.1 mandatory on any vehicle running 9.99 (*6.39) and quicker. Padding must be used anywhere driver’s helmet may come in contact with roll cage components. See General Regulations 4:11, 10:6.
Hopefully it won't take too many $25+ sticks of padding.
