The advanced DIRS-R takes everything the original DIRS accomplished and refines it for drag strips, sticky tires, and high-power builds. Built for serious strip and street use, it delivers ...
HARRISBURG, Pa., Oct. 1, 2025 /PRNewswire/ -- GetPer4mance.com, the official home of Per4mance Development LLC, has expanded its patented Differential Integration and Reinforcement System (DIRS) ...
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