2026 monthly endurance series

WEC Series
Hypercar & GT

Six-minute heats with alternating Hypercar and GT races. Keep the car running: maintenance happens under green flag or between heats.

At a glance

Quick Specifications

Use this summary for setup and tech inspection. The detailed rules below control if a question arises.

Complete requirements

This is an endurance race. There are no backup cars during any race.
All necessary car maintenance must be done under green flag or between heats.
Each heat is 6 minutes. There is no stoppage for an ailing car other than to collect it.
Hypercar and GT alternate by race: Hypercar for race 1, GT for race 2, and so on.

Hypercar: Mid-America Eagle, Chicagoland CR102, or Mid-America Road Runner motor. Open 64-pitch gearing.
GT: Mid-America Stomp motor. 64-pitch gearing with a 15-tooth pinion and 34-tooth spur.
All motors must remain factory sealed and unopened and bear the manufacturer’s permanent identifying etching on the can.

Use a commercially available 4-inch, two- or three-piece flexi frame.
Commercially available light pans by the same manufacturer are permitted.
Lead weight may be added as needed, securely attached to the top of the chassis.
Frame cutting is prohibited except for a minor increase in the rear bearing or bushing opening to allow adjustability.
The motor may be soldered in place. Motor braces and pin tubes are permitted.
Tape is permitted on either side of the frame; underside tape must lie completely flat.
Maximum car width is approximately 3.26 inches (83 mm).
Minimum rear clearance is 0.047 inch; minimum front pan and center-section clearance is 0.010 inch. Measure with the complete car on a slotted tech plate.
The car body must have front-wheel decals in place.

A continuous-diameter 3/32-inch solid metal rear axle is required. Titanium and exotic alloys are prohibited.
Bearings, oilites, or bushings are permitted. Flatted axles are permitted.

Bodies must be painted and display at least three numbers.
Driver figures are optional but recommended.
Cut bodies along the mold lines and mount them without exaggerating their appearance or aerodynamic performance.
No added wing material is permitted.

Approved bodies

Body	Manufacturer	Order no.	Thickness
Mercedes LMP	Mid-America	959	0.007″
Porsche 919 LMP	Mid-America	984	0.007″
Ferrari P2 LMP	Mid-America	958	0.007″
Toyota WEC LMP (not high downforce)	Mid-America	950 or 962	0.007″
Lamborghini SC63	JK Products	B169A or B169B	0.007″ or 0.010″
Bravo Concept	JK Products	B166A or B166B	0.007″ or 0.010″

Approved bodies

Body	Manufacturer	Order no.	Thickness
Morgan Aero	JK Products	B103B	0.010″
Jaguar GTS	JK Products	B161B	0.010″
Dodge Viper	JK Products	B59B	0.010″
Ferrari Maranello	JK Products	B62B	0.010″
Cadillac CTS	JK Products	B75B	0.010″
Aston Martin	JK Products	B76B	0.010″
Chevrolet Corvette C6	JK Products	B78B	0.010″
Mustang GTD DTM	JK Products	B168B	0.010″
Kelly Corvette	Kelly Racing Products	—	0.010″