Women racers running improved stock machines with additional tuning options.
600cc sleds with moderate performance upgrades beyond factory stock, tuned for increased climbing performance.
700cc sleds with allowed engine and chassis upgrades for improved torque and drive.
900cc sleds with performance enhancements for stronger uphill power delivery.
1000cc machines with authorized modifications to boost power and climbing capability.
Pro Masters competitors running improved stock sleds with performance tuning.
Semi Pro competitors racing improved stock sleds with legal enhancements.