Request stepped header design for 600cc motorcycle engines
#30427 from Eric McRee · Not recommended · Minutes (2021-05 Fastrack)
Thank you for your letter. The Club Racing Board does not recommend this change. No evidence of a need for stepped headers
has been provided, nor has comparative dyno data been submitted. Without such information, the Club Racing Board cannot
justify removal of the prohibition of stepped headers, which would almost certainly be perceived as a benefit to cars with 600cc
motorcycle engines.