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International Snowmobile Racing, Inc.

    http://isrracing.org/
    International Snowmobile Racing 1527 N Railroad Street. Eagle River, WI 54521 Phone. Office: 262-335-2401 Cell: 715-617-5054 Fax: 715-479-8947 ... Pro Stock Ice-Grass-Snow drag race rules DRIVE Section of Belt Drives. View All Bulletins. News View all articles. USAC Claim Form. International Snowmobile Racing.

Rules - International Snowmobile Racing, Inc.

    http://www.isrracing.org/rules.cfm?aID=10021
    Racing Aspects & Rules. Asphalt Racing; Cross Country; Cross Country - Junior; Drag Racing Junior; Enduro; Enduro - Junior; Grass Drag Racing; Hillclimb ; Hillcross; ... International Snowmobile Racing 1527 N Railroad Street. Eagle River, WI …

Rules - International Snowmobile Racing, Inc.

    http://www.isrracing.org/rules.cfm?aID=10007
    Racing Aspects & Rules. Asphalt Racing; Cross Country; Cross Country - Junior; Drag Racing Junior; Enduro; Enduro - Junior; Grass Drag Racing; Hillclimb ; Hillcross; ... International Snowmobile Racing 1527 N Railroad Street. Eagle River, WI …

SNO CROSS 2021-22 - International Snowmobile Racing, Inc.

    http://www.isrracing.org/tempPDF/Sno%20Cross.pdf
    1. Except where otherwise specified, one cutting edge (steering edge) allowed per ski on snowmobiles with independent front suspension. Any ski edge with over 1/2-inch turndown constitutes a cutting edge 2. A maximum of fourteen (14) …

2020 ISR Rules - iwaracing.org

    http://iwaracing.org/wp-content/uploads/2020/06/2020-ISR-Rules.pdf
    SNOWMOBILE IDENTIFICATION 1. The driver’s assigned competitive number must be displayed on both sides of snowmobile hood. The number must be a minimum of six (6) inches high, 3/4 inches wide and be displayed in contrasting colors. PRE-RACE SAFETY INSPECTION 1.

VERIFICATION AND CONTROL - International Snowmobile …

    http://www.isrracing.org/tempPDF/Hillclimb%20and%20Mountain%20Cross.pdf
    DRIVER'S NUMBER ON SNOWMOBILE 000 000 PRE-RACE SAFETY INSPECTION 1. ANY ENTRY IS SUBJECT TO INSPECTION UPON REQUEST BY THE RACE DIRECTOR OR TECHNICAL …

Official ISR Racing Rules | Woody's Traction

    https://www.woodystraction.com/racing/official-isr-racing-rules/
    Official ISR Racing Rules Here are the links to the latest snowmobile racing rules from International Snowmobiling Racing, Inc. PLEASE NOTE: Every racer participating in an ISR sanctioned event must have an ISR ID number. To get one, you must register on the ISR website which you can get to by clicking here. ISR APPROVED SPEC GAUGE

General Snowmobile Rules - National Straightline Snowmobile …

    http://racenssr.com/pdf/2013NSSRGeneral%20Snowmobile%20Rules%20Book.pdf
    1. The International Race Rules Committee will approve the validity of all engine intake systems. 2. In stock and stock based classes, the engine must have originated form a stock qualified, OEM produced snowmobile. 3. OEM carburetor slide valves and replacement jet components without modification will be allowed in all stock classes.

INTERMOUNTAIN SNOWMOBILE RACING ASSOCIATION

    https://www.imrsnocross.com/downloads/get.aspx?i=417325
    1. Regardless of snowmobile equipment passing prior inspections, compliance with the rules must be made at the post-race inspection. 2. Once a snowmobile has completed registration to race it may be inspected at any time. 3. Tech Director will select the snowmobiles for mandatory teardown and inspection. Drivers will take their snowmobiles directly to Tech after completing …

Rulebook | AMSOIL Championship Snocross

    https://snocross.com/resources/rulebook/
    Numbers can be displayed on sled tunnel if the number size requirements are meet, and the number is completely viewable to officials. Numbers can also be displayed on the windshield instead of handlebars if the rider chooses to. Number size requirements must still be meet, and the number needs to be viewable to officials. Penalty for not ...

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