10/12/2021

As the result of runs under the Automatic Horsepower Factoring System (AHFS) 1.20-second under policy at the NHRA Divisional event, the following change has been made.

The index for SS/VX 11.60 has been decreased by 0.15-seconds to 11.45.

NHRA's 2021 Automatic Horsepower Factoring System outlines that any run of 1.20-seconds or more under the index will receive an immediate index decrease or horsepower increase. These changes are effective October 12, 2021.