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NHRA Technical Department Makes Parity Adjustment to The NHRA Pro Mod Drag Racing Series

The NHRA Technical Department is implementing change for parity in category. The changes listed below is for immediate implementation for the category. We appreciate your continued support and look forward to seeing you soon.


Roots Supercharger: Maximum supercharger overdrive limit is 16.5 percent for all combinations.


Weight adder: Any 4.9 bore space supercharged combination add 25lbs to base weight.


These rule changes will go into effect immediately. NHRA reserves the right in the future to make additional rule changes to control performance and maintain parity in the category.