Indy

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. Must use JK-251172 Indy chassis
2. Clearance to be .047 at rear axle
3. Hawk 7 or Chicagoland 102 motor (no modifications or magnet strengthing)
4. 3/32 axles
5. Bushings only
6. Any tire
7. Body clips or pins
8. Tire width no more than 3.25 inches
9. Indy bodies only – no extended wing or aerodynamic down force in excess, standard body (JK B17sB or  JK 6113B)
10. No strategically placed weights

Late Model

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK C21 chassis
2. Clearance to be .047 at rear axle
3. Hawk 25 Motor (no modifications or magnet strengthening)
4. 3/32 solid rear axle
5. Bushings only
6. Any rear tire
7. Body clips or pins
8. Tire width no more than 3.25 inches
9. Vintage Car Body only with 3-D interior
   a. JK Mustang 7254B
   b. JK Camaro 7253B
   c. JK Javelin 7355B
10. Spoiler not to exceed 5/16 inches from trunk deck height
11. Sticker in place of front wheels

LMP

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK class only, 4 inch C-21 or C-43
2. Clearance to be .047 at rear axle
3. Hawk 7 Motor or CL102 (no modifications or magnet strengthening)
4. 3/32 solid axles
5. Bushings only
6. Any tire
7. Body clips or pins
8. Tire width no more than 3.25 inches
9. LMP body – any body labelled LMP by JK
10. No extended wing or aerodynamic down force in excess
11. No strategically placed weights

NASCAR

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK chassis only, 4 inch C-21 or C-43
2. Clearance to be .047 at rear axle
3. Chicagoland CR102 motor or Hawk 7 (no modifications or magnet strengthening)
4. 3/32 solid axles
5. Bushings only
6. Any tire
7. Body clips or pins
8. Tire width no more than 3.25 inches
9. NASCAR bodies only – 3D interior (JK Chevy 838B, JK Dodge 836B, JK Ford B39B, JK Toyota B37B)
10. No extended wing or aerodynamic down force in excess
11. Sticker in place of front wheels
12. No strateigcally placed weight

4″ Nastruck

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK C21 inch chassis
2. Clearance to be .047 at rear axle
3. Hawk 25 Motor – No modifications or magnet strengthening
4. 3/32 solid round axle with open gear ratio
5. Bushings only
6. Any rear tire
7. Body clips and pins
8. Tire width no more than 3.25 inches
9. Truck body with 3-D interior
   1. JK Toyota JK 7148B
   2. JK Chevrolet JK 71142B
   3. JK Ford JK 71162B
   4. JK Dodge JK 71152B
10. Body height no less than 1.7 inches from chassis to roof
11. Body height will be measured with a micrometer at tech
12. Sticker in place of front wheels

Retro Nascar + 4.5″ Nascar

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK 60 – 4.5″ chassis
2. Clearance to be .047 at rear axle
3. Hawk 7 or CR10 2 motor
4. 3/8 solid round axle
5. Bushings only
6. Body clips
7. Tire width no more than 3.25 inches
8. JK 4 1/2 Body
9. JK Charger body JK7350B
10. JK GTO body JK7351B
11. No extended wing or aerodynamic down force
12. No strategicaly placed weights
13. No frame or body modifications
14. Body height per box stock
15. Guide height can be adjusted with spacers to match track braid height
16. Front wheels must extend below the frame
17. Body wheel opening may be trimmed to avoid tire damage

All classes are open gearing, except group 9 & 1/32 scale box stock.

Box Stock 1/32″

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. JK C1 chassis with no modifications
2. Chassis can not be taped to avoid movement
3. Standard bushings only- using stock # U26
4. Body clips- no pins
5. Front wheels must remain on the car
6. Hawk 7 Motor- standard motor – no ball bearings
7. 11 tooth straight pinion – no beveled or cut pinions – JK or sonic 30-11
8. 35 tooth JK full size spur gear part number G635
9. JK 3/32 solid round axle- no bevel or reduced weight axles
10. Rear tire JK 205L .720 height .400 rim natural rubber
11. Rear tire width can not be trimmed below .6 inches in width
12. Clearance to be .032 at rear axle
13. Car width no longer than 2.58 inches at the rear wheels
14. Car height no shorter than 2.15 inches or exceed 2.3 inches on shop red block which is .65 inches high
15. JK Ultimate Peugeot 908 Body #B79B LMP
16. JK Stock Car B149B
17. Body wheel opening may be trimmed to avoid tire damage
18. Peugeot LMP body rear bumper must extend 1 inch below the top of the rear spoiler
19. Body may be reinforced with tape and or body armor
20. Stock guide only Part # JK U66T Must remain 1 inch long at bottom of guide
21. Guide height can be adjusted with spacers to match track braid height
22. No weighted guide nuts
23. Multiple guide nuts not allowed
24. No silver braids
25. Braids must measure at least 1/2 inch from front of the guide
26. No type of weight is allowed at any location on the car

Koford Wing – Group F

SPECIFICATIONS UPDATED AUGUST 1, 2026

1. EDM cut chassis
2. Winged body
3. Chicagoland 104 motor
4. Body clips or pins
5. Any tire – width no more than 3.25 inches
6. Clearance to be .047 at rear axle