nope, factory bone stock production cars can run without roll bar as long as not modified.Racing your 18 automatic at the drags? Dont forget to get your roll bar lol. 11.99 and under requires it.
Additionally Requirements and specifications for Street Legal are the same as those for the Summit Racing Series with the following exception: Unaltered 2008 OEM model year and newer production cars running slower than 9.99 and 135 mph do not have to meet the requirements and specifications for the Summit Racing Series except for the following: Convertibles and T-tops must meet Summit Racing Series Roll Bar and Roll Cage requirements, All drivers must meet the Summit Racing Series Helmet and Protective Clothing requirements.”