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JUNIOR NOVICE
The Junior Novice class is available to drivers age 10-13.
Only designated models are eligible for competition. Snowmobile must have a maximum speed of 40 miles per hour while racing. A radar gun will be used to monitor the top speed. Any sled exceeding 40 miles per hour will be disqualified, The designated radar gun cannot be protested. * A Junior Novice racer may not advance to Junior racing until his/her 14th birthday.
GENERAL COMPETITION/SAFETY RULES
1. If it isn't stated in this book that it can be done, consider that it cannot be done.
2. All snowmobile must comply with the general section sled/equipment requirements &
regulations as specified.
3. The snowmobile must have original OEM (or factory designated replacement) engine,
hood,track, skis, frame, cowl, gas tank, carburetion, air box, suspension, and variable
speed converter supplied by the manufacturer for that particular model.
a. Factory supplied options are not allowed.
b. No engine kits allowed.
MATERIAL REMOVAL
1. Removal of any material from total machine by means of heat, acid, drilling, grinding,
sand blasting, peening, substitution or total elimination will not be allowed unless
otherwise specified in this section.
ENGINE
1. No component of the engine may be altered, changed, reduced or enlarged from the engine
manufacturers original stock specifications, nor may any additional components be added to
the engine.
2. Maximum cylinder overbore for wear cannot exceed .020 inches (1/2mm).
3. Replacement pistons must be stock OEM for the model.
4. Blueprinting of engines is not allowed. No removal of material whatsoever will be
allowed. This is to include polishing, port matching, deburring, glass or sand blasting
surfaces or material removal for the purpose of engine balancing or other reasons.
5. There will be no more than one cylinder base gasket to a cylinder. No changes in engine
dimensions can be made ny gasket adjustments.
6. A maximum of one venturi per cylinder will be allowed.
7. OEM carburetor slide valves and replacement jet components without modification will be
allowed in all stock classes. No modification to carb body will be allowed.
8. Engine must retain original cooling concept (fan or free air cooling circuits cannot be
modified or removed, except for quick disconnects.)
9. Oil injection pump must remain in place and functional. Lines may be removed and
plugged, premix gasoline may be used.
10. The OEM exhaust system for the model must be furnished complete on machine. The
exhaust system must be fully contained within the confines of the cowl or the chassis and
direct exhaust emissions pipe must not protrude more than three (3) inches beyond the
chassis or hood.
11. Spark plugs do not necessarily have to be OEM equipment in the Stock classes.
12. No additional fuel pumps may be added to the stock carburetors.
13. Throttle may be changed, but must be thumb operated with a direct mechanical operated
mechanism.
DRIVE
These components will be interchangeable between any brand providing there is no
modification to the clutch required to make these components fit.
1. Any combination of factory springs, weights, ramps, etc. may be used. Clutch engagement
speed shall not exceed 6000 RPM when machine movement is initiated for V-bell torque
converter drive systems.
2. In the primary clutch metal may be removed, but not added to ramps or flyweights.
3. Cams may be machined for angle change. No material may be added. No welding will be
allowed (billet helixes allowed).
4. Drive belts do not have to be OEM.
5. Any drive chain or sproket may be used.
6. Brakes must remain OEM for the model and year.
7. Brake lever may be modified or changed to fit the driver, but must remain hand operated
with a direct mechanical operated mechanism. The function of the brake system may not be
compromised. The brake lever must not extend beyond the end of the handlebar.
SKI SUSPENSION & STEERING
1. Any properly filed OEM spring allowed (+ or -) .5 inch (12.5mm) overall length.
2. Limiter strap allowed to limit travel, but must maintain two (2) inches of travel. (No
locked suspension)
3. No device may be added that stops the suspension from functioning (no locked
suspensions).
4. Any commercially available handle bar allowed. Handle bar extensions will be legal. All
ends must be plugged.
5. Shocks must remain OEM for the model and year.
6. Torsion bars not allowed.
SKIS & SKI RUNNERS
1. Skis must remain OEM for the model and year.
2. Skis may be reinforced, but must remain in the original configuration. This reinforcing
must be on the upper surface of the ski only.
3. Ski widening devices and/or height adjustment devices are not allowed in Stock unless
furnished as OEM and filed properly.
TRACK SUSPENSION
1. The complete suspension must be used as furnished and filed by the manufacturer. There
will be no suspension options permitted.
2. Gas valving/oil may not be removed from the front shocks on track suspension.
3. OEM for the model suspension wheels, marginal snow wheels may be added or removed.
4. OEM for the model rear idler wheels may be added.
5. Shocks must remain OEM for the model.
6. Travel must remain OEM for the model.
TRACK & TRACTION
1. Track may not be reversed.
2. OEM track guide clips may be added.
FRAME & BODY
1. OEM windshields for the model or factory options allowed. The windshield may be alter
for drivers safety and comfort, but must extend five (5) inches above the highest point of
the hood. If the original OEM windshield for the model is lower then five (5) inches it
may be used. Windshield must have safety edging.
2. Windshields must be intact at the start of the race.
3. Windshield must remain in OEM mounting location.
4. Removal of stock air vent gills including intake or exhaust are not allowed.
5. No additional venting allowed.
6. Protective taping or screening will be restricted to the external opening only.
7. Seat and fuel tank must remain OEM for the model (seat color optional)
8. The OEM fuel tank must be the only tank that can be used for fuel. The lubrication tank
cannot be used as a fuel tank.
IGNITION & ELECTRICAL
1. Tail lights must be operable.
2. Glass lenses must be taped and remain in place.
3. Stock snowmobiles will be allowed to add or remove tachometers, speedometers or heat
gauges, openings must be closed.
4. Spark plugs, spark plug wires and connectors do not have to be OEM.
5. Cooling system must remain in the OEM location except that tunnel mounted heat
exchangers may be relocated for stud clearance, but must remain within the confines of the
tunnel.
DESIGNATED MODELS
Arctic Cat - Z440, Z440 Sno Pro Jag 440
Ski-Doo - MXZ 440F Formula S
Polaris - Indy XCF, XCF SP Indy Sport