Kid Kart:

Ages: 5-8 years old

Gasoline Only - 87 octane

Open Tire Rule

Comer 50cc engine

Spec Gear

No Weight Rule

Jr II 4-Cycle:

Ages: 8-14

Gasoline Only - 87 octane

5" slicks only

Sealed Briggs LO206 or Sealed Ghost

Min Weight - #320

Senior 4 Cycle:

Ages: 12+

Treaded tires only - No Prep  - No Duro rule

Gasoline Only 

Sr4 Predator / Clone

Sr4 Animal 

Briggs LO206

Min Weight - #360

Limited Modified - Stage 2/3:

Ages: 13+

Open tire rule

212cc Max, Cast Heads Only

Open fuel rule

Min Weight -  #360

Jr UAS:

Ages: 13-17

Open tire rule

Open fuel rule

Wedge Body Mandatory (Safety).

15" Max height @ front wheel c/l from the ground.

24" Max height @ rear axle c/l from the ground.

4-Stroke OHV pushrod engine - 14.5 ci (238cc) Max.

2-Stroke any 100cc kart based piston port engine, i.e.....

Yamaha, PRD, TKM, Comer, Komet, ect.

Must remain piston port engine, (no reeds).

Min Weight - #320 for both 2, & 4 stroke engine platforms.

Unlimited All Stars:

Ages: 18+

Open tire rule

Open fuel rule

Any 2 cycle engine up to 270cc or any 4 cycle engine up to 510cc.

UAS Class Karts must meet all UAS Rule Book requirements.

There are a wide variety of engines that are used for the UAS  Class.

Most common are Dirt Bike or ATV engines.

This class is for the more experienced racer!

UAS Open Class karts are the Super Modifieds of Speedway Karting!