EDIT: Rule exception to conventional rules.

Eight-competitor pro ladder. A -ladder, B -ladder, C -ladder and, if applicable, D-ladder max. (32 competitors).

To make for a more interesting race between different types of nitro bikes competing in the same race, a 6.10 second equalization breakout rule is used for riders breaking the 6.10 second barrier.

For the equalizing penalty, only full hundreds of second are counted.

An example: If a rider runs 6.0192 s, the penalty will be 0.09 s (6.10-6.01 = 0.09 s). For the next run, total time with penalty for the same time of 6.0192 s becomes 6.1092 s. At the next round, the rider runs 5.9192 s. Then his time is penalized by the previous 0.09 s increase so that the time with penalty becomes 6.0092 s. The next round penalty is 0.19 seconds (6.10 – 5.91 = 0.19 s)

Time penalties are reset by each race.