National Classes

Class

Description

Points Races

ProMax 600cc 2 stroke, 1050cc 4 strokeAll Events
Pro AM Plus 30*Super Stock designated models – Refer to ISOC Official RulebookAll Events
Pro AM Women*Super Stock designated models – Refer to ISOC Official RulebookAll Events
Pro Lite*Super Stock designated models – Refer to ISOC Official RulebookAll Events
Snow Bike Up to 700cc, naturally aspirated, follow all ISR General Snocross Rules, Age 15+, no StudsAll Events
Sport*Super Stock designated models – Refer to ISOC Official RulebookAll Events – Best 12 Round Scores of 16
Sport Lite*Super Stock designated models – Refer to ISOC Official RulebookN/A
Junior 16-17Maximum 500cc Liquid Cooled, 600cc Fan Cooled, 600cc “Throttle Restricted” Super Sport and all Yamaha Phazer modelsAll Events – Best 6 Round Scores of 8
Junior 14-15Maximum 500cc Liquid Cooled, 600cc Fan Cooled, 600cc “Throttle Restricted” Super Sport and all Yamaha Phazer modelsAll Events – Best 6 Round Scores of 8
Jr. 10-13Refer to ISR rulebook, pages 17-18 hereAll Events – Best 6 Round Scores of 8
Jr. Girls 9-13Refer to ISR rulebook, pages 17-18 hereAll Events – Best 6 Round Scores of 8
Transition 8-10 & 8-12Maximum 300cc Fan Cooled/AC 500ccAll Events – Best 6 Round Scores of 8
120 Champ (Age 6-12)Modified 120/Stock Briggs 206All Events – Best 6 Round Scores of 8
Stock 200Page 25Best 6 Round Scores of 8

*Super Stock designated units conform to ISR Super Stock 600 Engine Limitations


If You Run ThisYou Can Also Run This*
ProPro AM Plus; Pro AM Women
Pro AM Plus 30Pro OR Pro Lite OR Sport OR Sport Lite
Pro AM WomenPro OR Pro Lite OR Sport OR Sport Lite
Pro LitePro AM Plus; Pro AM Women
SportSport Lite (if not top 30 in previous season’s Sport points) OR Pro AM Plus OR Pro AM Women; Jr. 14-17
Sport LiteJr. 14-15, Jr. 16-17 OR *Sport Lite can run Sport (if not top 30 in previous year’s Sport points)
Junior 16-17Jr. 14-15 (if age appropriate); Sport Lite/Sport
Junior 14-15Jr. 16-17 ; Sport Lite/Sport
Jr. 10-13/Jr. Girls 9-13Age appropriate classes
Transition 8-10 & 8-12Age appropriate classes
120 Champ (Age 6-12)Age appropriate classes

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

Revised 9/8/2016