The highest-output Mod builds in an unrestricted displacement format — the cutting edge of hillclimb sled engineering.
Age-restricted Pro Masters riders competing on stock-based sled platforms.
Pro Masters competitors running improved stock sleds with performance tuning.
Pro Masters riders piloting fully modified machines within their division.
Semi Pro riders competing on stock-form machines as they progress toward full Pro status.
Semi Pro competitors racing improved stock sleds with legal enhancements.
Semi Pro riders piloting Mod-class builds while developing advanced competition skills.
Women competitors racing factory-formatted sleds with limited modifications.
Women racers running improved stock machines with additional tuning options.
Women competitors piloting Mod-class builds with high-performance modifications.
Designed for non-pro riders ready to challenge the mountain on modern machines.
Rules:
Riders must be non-pro (5-year rule)
Sleds must meet ISR Stock Turbo specifications
Winner…
Where the heritage of the sport takes center stage.
Rules:
Riders must be non-pro
Sleds must be 20+ years old or period-correct restorations
Chassis, motor, and rear…