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International Snowmobile Racing, Inc. Rules

Team Woody's Racers - Accurate, up-to-date snowmobile racing rules from the ISR

Every Racer participating in an ISR sanctioned event must have an ISR ID number. Register on the ISR website.

Asphalt Racing 

's ISR Approved Stud, Runner and Support Plate Gauge

  • Must have for any racer
  • Measures stud projection over the lug to meet ISR specification
  • Measures the height of runners to meet ISR specifications
  • ISR APPROVED
- See more at: http://www.woodystraction.com/Store_ProductDetail.aspx?pid=B8AD123A7A5753BC#sthash.S5Huj2D0.dpuf

dy's ISR Approved Stud, Runner and Support Plate Gauge

  • Must have for any racer
  • Measures stud projection over the lug to meet ISR specification
  • Measures the height of runners to meet ISR specifications
  • ISR APPROVED
- See more at: http://www.woodystraction.com/Store_ProductDetail.aspx?pid=B8AD123A7A5753BC#sthash.S5Huj2D0.dpuf

ISR Logo

Cross Country
Drag Racing
Enduro
Hillclimb and Mountain Cross                 
Hillcross
Ice Lemans

Woody's stud, runner and support plate gauge.

Measure stud projection. Measure runner height.

Oval Sprint

ISR APPROVED

BUY IT NOW

Spec guage to meet ISR stud and runner specifications.

Sno Cross
Speed Run Competition
Vintage Oval
Watercross Competition
Youth Racing   ISR Bulletins

If you have any questions about the snowmobile racing rules, please contact the ISR.

International Snowmobile Racing, Inc.
1527 N Railroad Street.
Eagle River, WI 54521

Office Phone: 262-335-2401

Email ISR through the Contact Us tab on the ISR website.

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