Fri nights: Gates open at 5 PM, racing starts at 7:45 PM   |   4658 E River Rd, Mt Pleasant, MI 48858    |   989-773-2387

2022 Mini Wedge Rules


Rules & Regulations


Wheelbase 45” - 49”. Maximum width of the outside of the tire is 45”. There are to be no roofs or sail panels. A maximum of a 3-inch spoiler will be allowed. Spoiler side’s maximum height will be 3 inches from the deck and 5 inches long.

All karts must be constructed of steel tubing with a complete 6-point roll cage including adequate side protection. Cages must be a minimum of .065 x 1” steel tubing welded to the frame.

The engine must be located behind the drivers seat. No part of the engine can be located beside the seat.

Floor pans are required to be made of steel or minimum .040” aluminum. The floor pans are to be securely bolted or riveted to the frame. The length of the floor pan must go from the center of the seat to the front of the frame going past the drivers pedals.

All karts must have a fully wedge Late Model appearing body. No open fenders will be allowed. There must be at least 4” of body behind the rear wheels. There will be no covered or enclosed motors, all motors will remain completely visible at all times. See Body Drawings for more information.

Tires must be a Hoosier (15600 *11 inches tall* or 15500 *10 ½ inches tall*) FK Compound. No grooving, sipping, treating or soaking of the tires. Tires must durometer 50, any tire that durometer is 48 or less will be deemed as treated and will result in a 12-month suspension.

Rim width cannot be any wider than 6 ½“ wide and must be at least 6” tall.

Axle must be a steel axle or chrome moly and be a minimum of 3/16” wall thickness maximum length of 38”.

No free spinning rear hubs or Ratchet style hubs

No suspension will be allowed. This includes springs, shocks, rubbers, torsion bars and any other type of dampening device.

Rear deck height cannot exceed a maximum of 27.5” from the ground and a minimum of 22” high from the ground.

Rear quarter panel cannot exceed a maximum of 24” and a minimum of 20”.

Body must be constructed of .040” aluminum. Plastic may be used for nose, fenders, and trim.

Kart must weigh no less than 335 lbs. With driver after the race. When tracks split the class by age they must split it by 6 to 9 years old and 10 to 14 years old. The 10 to 14 years old kids must weigh in no less than 375 lbs. With driver after the race. (MWA Tracks can choose to weigh in before or after the race.)

We highly encourage the doors and quarter panels to be wider than the tires width at the bottom of the doors and quarters to help prevent “wheel hop”.

At least one vertical D door bar must be welded on each side of the driver, running from the main rail to side crash bars for driver protection. See rear side view drawing for more details.

Front and rear bumpers must have at least a 6” tall hoop and must be mounted at all times.

Front and rear down tubes are mandatory for drivers protection.

All tubing on main roll cage must be at least .065” wall tubing.

Drivers seat must be mounted in 4 locations *4 bolts*

A minimum of 12” number must be present on each door.

Kart must have 2 return springs at all times.

Kill switch must be mounted on the deck, visible to officials.

Any weight mounted on the kart must be painted white with the drivers name and kart number listed. Weight must be mounted by at least a ½" bolt. Any weight lost during an event will result in a 2 week suspension.

A 5-point harness system is mandatory. All harnesses must have a SFI Rated patch.

All karts must have 2 triangle type side window nets attached to the roll bar, one on each side of the driver. If you run the Full Containment seat, you are not required to run an window net, but are still highly recommended to.


MWA 6.5 HP (212cc) OHV Predator Engine, that is sealed with the MWA marks and serial number are allowed. Engines must be sealed.

6.5 HP (212cc) OHV Predator Engine stock will also be allowed but can be claimed.

Engine must remain stock.

Fuel allowed is E85 and regular gasoline with E85, you can change the Jets, NO alcohol will be allowed * You cannot alter the exhaust in any way * Cover can be altered to fit the chain guard if needed * Taking out the spark resistor for the exhaust is not allowed * You can change the spark plug * You can disconnect the low oil sensor * You can run an ARC Air Cleaner * NO RACING carburetor

MAX-Torque clutch is the only clutch you can run

You can run 12, 13, or 14 tooth clutches. (This is to help decrease our rear axle gear for more ground clearance)

Engine claim is set to $75 and your motor, or $140 and no motor. ** Anyone finishing the feature can claim any driver, at any time who is running an unsealed Harbor Freight engine. The person being claimed has the choice. This claim includes the engine and carburetor, but not the clutch, chain guard, or air cleaner. Need to have claim and money ready at the end of the race before they return to the pits.

Penalties- If found with modifications to the motor, the restrictor plates, or the clutch:

First offense- Disqualification for the night and loss of points

Second offense- Suspended for the rest of the season

Race Rules-

All drivers must be accompanied by a parent or legal guardian, who must sign a release form. Without a signed release form from a parent or legal guardian, the child cannot race. Any exception to this rule cannot be made by an MWA Official and must be brought before the tracks management or the tracks insurance carrier for a decision.

All cars will be lined up according to their pill draw. Failure to draw a pill before the lineup is turned in to track officials. This will result in the driver starting at the rear of the heat.

Arguing about scoring or judgement calls will not be tolerated. Confrontations or arguments with MWA Officials, track officials, or another parent can result in a minimal suspension of 2 weeks from all MWA sanctioned tracks.

The scoring tower is off limits to drivers, parents, and anyone who is not a track staff member.

Any parent, driver, or member of any team involved in any type of confrontation with anyone at the track will result in a suspension of the driver and parent or legal guardian for at least 2 weeks from all MWA events.

The age limit is 6 to 14 years old. You must provide a copy of your birth certificate before your membership can be provided.

There will be NO WARNINGS given out for bad behavior such as: No throwing a fit on the racetrack or the pit area. No yelling at the track officials, MWA Officials, scorers, flagman or track owner. No going to another pit to argue, this includes driver, crew or anyone with a mini wedge.

Parents or crew members are not allowed on the racing surface. On-track problems will be handled by the track crew.

Parents or crew must escort their car while in the pit area. No driving the karts thru the pit area.

It is recommended that you pit as close to the line-up/tech area as possible, in order to get the karts on the track in a timely manner.

Driver personal safety-

All drivers must wear an approved SFI-1 certified or SFI 13-2A/1 Fire suit with certification patch.

A full face helmet is mandatory.

All drivers must wear a neck brace.

Arm restraints are highly recommended but not mandatory.

All drivers must wear a closed toe show. SFI shoes recommended.

Race Procedure-

Cautions will be thrown when a driver spins out and is stopped on the track.

Cautions will be thrown when a driver drives off the track and is stuck.

The caution car (judgement call by official) will be put at the rear.

Two cautions caused and the driver will be black flagged for the rest of the event.

The black flag will be thrown when a driver is driving rough: this is a judgement call by an official and cannot be argued.

The class will be split into two classes when the car count allows. 6 to 9 year old and 10 to 14 year old.

Racecievers will be mandatory.

Heat races will be decided on by a pill draw.

Feature redraw will be set by the track.

Top 3 must report to tech area immediately after the race.

Top 3 will receive a trophy at the end of the night in each class.