Race Memo RM 26-01 B-Spec Mini Cooper Weight Adjustments with OEM
#40070 from B-Spec/C-Spec Committee · Rule change · TB 26-05 (2026-05 Fastrack)
The BSAC reviewed historical data, results, and past BOP of this platform in arriving at this decision. It is our desire to see MINIs
with the OEM manifold/approved Walker brand manifold competing at events. The BSAC will monitor the performance results
of these changes closely at HST events and the Runoffs over the coming months. Should data show that these cars are outside of
the desired performance window (I.E. too fast OR too slow) at their updated minimum weight, further BOP adjustments will be
made to ensure continued competitive parity. Data from a minimum of three drivers/vehicles from Majors or Super Tour
weekends will be evaluated before any further BOP adjustments are made. No further adjustments will be made to the header
configuration before its expiration on 1/1/27.
In GCR Section 9.1.10 Make changes as followsper RM 26-01:
Show 7 more lines
Mini Cooper (R56) MT (07-10): "2600 (OEM Catalyst) 2675 (Header)"
Mini Cooper (R56) AT (07-10): "2675 2600"
Mini Cooper Clubman (R55) (07-10): "2600 (OEM Catalyst) 2675 (Header)"
Mini Cooper (R56LCI) MT (11-13): "2675 2600"
Mini Cooper (R56LCI) AT (11-13): "2675 2600"
Mini Cooper Clubman (R55) (11-15): "2675 2600"
Mini Cooper Coupe (R58) (12-15): "2675 2600"