Regional Classes

Class

Sled
Pro Day #1/Day #2 Maximum 600cc 2 stroke, 1050cc 4 stroke
Pro Stock Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Pro AM +30 Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Pro AM Women Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Pro Lite Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Plus 15 Day #1/Day #2 Super Stock designated models – Refer to ISOC Official Rulebook
Ditchbanger 1999-2005 Day #1/Day #2 Vintage Rules
Sport Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Sport Lite (new riders/Sport, Pro AM Women/+30) Day #1/Day #2 Super Stock designated models – Refer toISOC Official Rulebook
Jr. 16-17 Day #1/Day #2 Maximum 500cc Liquid Cooled, 600cc Fan Cooled, 600cc *Throttle Restricted” Super Sport and all Yamaha Phazer models
Jr. 14-15 Day #1/Day #2 Maximum 500cc Liquid Cooled, 600cc Fan Cooled, 600cc *Throttle Restricted” Super Sport and all Yamaha Phazer models
Jr. 10-13 #1 Day #1/Day #2 Refer to ISR Rulebook, pages 17-18 here
Jr. 10-13 #2 Day #1/Day #2 Refer to ISR Rulebook, pages 17-18 here
Jr. Girls 9-13 Refer to ISR Rulebook, pages 17-18 here
Transition 8-10 Day #1/Day #2 Refer to ISR Rulebook, pages 17-18 here
Transition 11-13 Day #1/Day #2 Refer to ISR Rulebook, pages 17-18 here
Transition 8-12 Combined Day #1/Day #2 Refer to ISR Rulebook, pages 17-18 here
Pro 206 8-12 Day #1/Day #2 Briggs & Stratton motor
Pro 206 6-7 Day #1/Day #2 Briggs & Stratton motor
120 Improved Stock 6-12 Combined Day #1/Day#2 120cc improved stock
120 Improved Stock 6-7 Day #1/Day #2 120cc improved stock
120 Stock 4-5 Day #1/Day #2 & 120 Improved Stock 4-5 Day #1/Day #2 120cc stock/120 improved stock
120 Champ Day #1/Day #2 (Age 6-12) 120cc modified
Stock 200 (Ages 6-12) Page 25

*All riders must fit into appropriate age/gender class if age/gender specific class