Yamaha 100cc Rules

Class age and weight

Ages 15+. Age as of Jan 1, 2019 is the age you are allowed for the 2019 season. Weight of kart and driver (as raced, including helmet, neck collar, and clothing) combined at end of each race is 360 LBS minimum as weighed on the ELKT scale.

Driver Equipment

1. Helmet must be full faced with shield, in good condition, and designed for competitive motorsports.  No motocross style with goggles will be permitted.  A sticker on the inside of the helmet will indicate if it is of usable design
2. Snell SA/K2005/M2005 minimum requirement.  A guide list can be found at http://www.smf.org/certlist/std_K2005
3. Neck collar is mandatory
4. Gloves full fingered design mandatory
5. Chest and rib protector mandatory for 18 and under. Highly suggested but, not mandatory over the age of 18.
6. Jacket made of abrasion resistant material Leather, cordura nylon (designed for kart racing) mandatory. Full kart racing suit recommended
7. Nomex or Proban suits or jackets may be worn on top of or inside of a jacket or suit made for karting
8. Full length pants mandatory
9. Shoes mandatory no sandals, no open shoes
10. No “on person” body weights, all add-on weights must be fastened to kart 
    

Safety / Kart numbering

1. All add on weights must use a minimum 5/16” bolt and be double nut or single nut with cotter pin above the nut through the bolt. Weights must be painted white or be of bright chrome with kart number clearly readable
2. All steering components / fasteners must be safety wired
3. All brake components / fasteners must be safety wired and in working condition
4. Snap rings on end of rear axle must be safety wired.
5. Axle cannot extend past the rim face
6. Gauges allowed
7. Kart number, minimum of three clearly visible numbers from 30 foot distance. One on front nose bodywork and one on each side of side panels
8. Fire extinguisher is highly recommended that each entrant have a minimum of one operable 1-1/2 pound dry-powder fire extinguisher (rated for use on A, B, & C. type fires) in their pit area. Carbon Dioxide type extinguishers are not acceptable substitutes for the dry-powder type.

Engine Rules

1. 4 Hole Can Exhaust

Bumpers and Bodywork

1. CIK Style Full Size Rear Bumper Legal.  Hoop Style Metal Bumper also legal, must cover at least 1/2 of both rear tires, must be round hooped ends that form one loop on outside.
2. Steering fairings securely fastened in safe manor on the steering column. Must have minimum distance of 3” from steering wheel to fairing beginning edge. Steering column fairing allowed if it does not interfere with drivers’ vision. Plexiglas not allowed
3. Should any bodywork become loose, fall off, etc. during a race, it is at the race director’s discretion to allow continued racing or black flag the driver

Chassis

1. CIK Nose, Sidepods or Side Panels Required
2. Full Length Rear Bumper
3. Spec Tire Compound: MG Red- Must be purchased at ELKT
4. Rain Tires to be used in Rain Race, Rain Tires NOT Required to be MG Brand