Kart Racing Series Classes

THIS PAGE IS CURRENTLY UNDERGOING REVISIONS !

AMP 2 CYCLE KART CLASSES:

The kart weights are under review currently to bring them in line with sanctioned bodies..

Rotax Classes:  Fuel - Sunoco 260 GTX, Oil - Rotax XPS
Age CLASS & ENGINE TIRES WEIGHT
W/Driver
7 -10 Micro Max Mojo D1 235
9 - 12 Mini Max Mojo D1 265
13 - 16 Junior Max Mojo D1 320
15 & up Senior Max Mojo D2 365
32 & up Master Mojo D2 405
15 & up DD-2 Mojo D3 385
32 & up DD-2 Master Mojo D3
32 & up DD-2 Master "
397
397

For current Rotax rules & tire information, please read: 
USRMC Technical Regulations 2.26.14
2014 USRMC National Structure
USRMC Technical Regulations 2.26.14 (Micro and Mini)

FUEL & SPEC OIL FOR ALL 2 STROKE CLASSES, EXCEPT FOR ROTAX CLASSES: Sunoco 93 with Redline Oil or Sunoco 260 GTX with Rotax XPS

AGES 5 - 8 
KART CLASS ENGINE TIRES WEIGHT
W/Driver
Kid Kart 50cc Comer C50 Open Compound
4.5/4.5
150 lbs.

 

AGES 7 - 12 
KART CLASS ENGINE TIRES EXHAUST WEIGHT
W/Driver
Cadet 80cc
Comer K80
Hoosier MMX-A or Bridgestone YLC 4.50/4.50  As supplied w/engine 235 lbs.
Yamaha Sportsman 100cc
Yamaha KT 100
Hoosier MMX-A or Bridgestone YLC 4.50/4.50  RLV YBX
(3 hole can)
255 lbs.

 

AGES 12 - 15
KART CLASS ENGINE TIRES EXHAUST WEIGHT
W/Driver
Yamaha
Jr. Can
100cc
Yamaha KT 100
Hoosier MMX-A or Bridgestone YLC 4.60/6.00  RLV SSX-V #7548 (4 hole can) 320 lbs.
KPV Jr. Karters are welcome and Race with Yamaha... 
  Optional TaG Engines      
TaG* Jr. X30 Hoosier MMX-A or Mojo D1 4.60/7.10 Header 31mm 320 lbs. & see additional info below*
" Leopard "  Header 28mm "
" Rotax "  Junior Header "

*Add 20 lbs for front wheel brake karts
*WEIGHTS SUBJECT TO CHANGE AT PROMOTER'S DISCRETION

AGES 15+
KART CLASS ENGINE TIRES  EXHAUST WEIGHT
W/Driver
Yamaha Senior
100cc
Yamaha KT 100
Only heads with OEM casting "Yamaha" and cylinders with Y3 or Y4 and 787 are legal
Hoosier MMX-A or Bridgestone YLC 4.60/7.10 SR-Y Pipe and RLV 9110 Header 1.750" connector tube- 9.5" from piston to end of connector tube Senior - 345 lbs
Yamaha Sr. - Heavy " " " 360 lbs.
KPV Sr. Karters are welcome and Race with Yamaha...
TaG Sr & Masters* Optional TaG Engines TIRES   WEIGHT
W/Driver
" X30 Hoosier MMX-A or Mojo D2 4.60/7.10   See below*
" Leopard "   "
" Rotax "   "
" PRD "   "
" Rok TT "   "
 TaG Engines Junior Weight & Header Senior Weight  Masters Weight
 X30 320 lbs - 31mm  365  385
 Leopard 320 lbs - 28mm 365  385
 Rotax 320 lbs - Junior  365  385
 PRD NA  335 355
 Rok TT NA  385  405

 *WEIGHTS SUBJECT TO CHANGE AT PROMOTER'S  DISCRETION.
TAG Masters Rules:  DRIVER AGE: 30+  OR 21+ years old and 220 lbs with driving gear.

AGES 15+ OPEN FUEL FOR THIS CLASS..
KART CLASS OPTIONAL SHIFTER ENGINES TIRES WEIGHT
W/Driver
Open Shifter X30 shifter Hoosier MMX-A 4.60/7.10 390 lbs.
" ICC/KZ " 415 lbs.
" Moto " 415 lbs.
" Stock Moto " 400 lbs.

All Weights include kart & driver after session.

Weight will be monitored and could be adjusted, based on performance.
Leopard and Rok minimum pipe length per WKA rule book.

* TaG - Touch and Go electric start

 


 

AMP 4 CYCLE KART CLASSES:

Fuel: Sunoco 90 non-ethanol available on site.
Oil: Any commercially available synthetic, no additives allowed.

For all Briggs L0206 class specifications, please Click Here...

 

AGES 5 - 8
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
LO206 Kid Kart (WKA Sec 709) Briggs & Stratton Animal LO206 Kid Kart Package Open Compound 4.50/5” front & rear.. max rear circumference 33.75 200 lbs.
ADDITIONAL SPECIFICATIONS
Clutch: Spec LO206 Kid Kart Package Clutch - No modifications
Spec Gear: 17 tooth front, 57 tooth rear - #35 chain
Chassis: Full size sprint, cadet, or kid kart chassis – Specifications per WKA 201.1 – 201.12 and/or 251.1 – 251.12. Kid Karts per WKA 902.4 – 902.8.

 

AGES 5 - 8
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
Puffo Kid Kart Puffo Honda 39cc Open Compound 4.50/5” front & rear 150 lbs.
ADDITIONAL SPECIFICATIONS
Clutch: Spec Puffo Clutch - No modifications
Chassis: kid kart chassis – Kid Karts per WKA 902.4 – 902.8.

 

AGES 5 - 8
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
Kid Clone Clone Open Compound
4.50/5” front & rear..

Maximum wheel width: 6.5” front & rear (7” no go)
200 lbs.
ADDITIONAL SPECIFICATIONS
Clutch: Drum style clutch only – No disc clutches
Maximum wheel width: 6.5” front & rear (7” no go)
Restrictor plate: ARC .375 (RED) restrictor plate – one gasket on each side of plate
Air Filter: Aftermarket air filters are allowed. Maximum length of adapter – 1.375”
Header: Single stage, .75” Max OD, .635” Max ID. Maximum length of header and muffler is 15” and minimum is 10”.
Muffler: RLV Mini 91 with threaded nipple. Must be threaded on end of header and removable.
Bodywork: CIK style per WKA section 208 – 4 cycle style per WKA section 258 (Sportsman 1 apply)
Chassis: Full size sprint, cadet, or kid kart chassis

 

AGES 7-12
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
4-cycle Sportsman  aka
Cadet Clone
Clone: Purple Restrictor Plate - .500" - Small header/muffler
Animal Pro Gas: (WKA Sec 705) Green Restrictor Plate – 0.475” - Pro Gas Spec header
Hoosier MMX-A or Bridgestone YLC Front and rear 4.50 x 5” or optional 6.00 x 5" rear 265 lbs.
ADDITIONAL SPECIFICATIONS
Clutch: Clone - Drum only, no disc : Animal - Open clutch (no axle clutches)

 

AGES 12-15
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
4-cycle Junior Clone: No restrictor plate - Small header/muffler
Animal Pro Gas: (WKA Sec 705) Orange Restrictor Plate - 0.620" - Pro Gas Spec header
Hoosier MMX-A or Bridgestone YLC Front 4.50 x 5” or
Rear 6.00 x 5"
Clone - 290 lbs.
Pro Gas Animal - 320 lbs.
ADDITIONAL SPECIFICATIONS
Clutch: Clone - Drum only, no disc : Animal - Open clutch (no axle clutches)

 

AGES 15 years & up
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
Clone Senior Clone Hoosier MMX-A or Bridgestone YLC 4.50/5” front & 7.10/5” rear 340 lbs. with header/muffler option 1

OR
375 lbs. with header/muffler option 2

(Above two options will raced and scored as one class)

ADDITIONAL SPECIFICATIONS
Clutch: Open Dry Clutch – No Axle Clutches
Maximum wheel width: 6.5” (7” no go) front - 9.25” (9.75” no go) rear
Air Filter: Aftermarket air filters allowed. Maximum length of adapter – 1.375”
Header:
Option 1 (340#): Single stage, .75” Max OD, .635” Max ID. Maximum length of header and muffler is 15” and minimum is 10”.
Option 2 (375#): Must be double nutted – bracing and header wrap highly recommended. May not protrude into exhaust port.
Muffler:
Option 1 (340#): RLV Mini 91 with threaded nipple. Must be threaded on end of header and removable.
Option 2 (375#): RLV 4100, 4102, or 4104 - .1285 no go on baffle holes. No coatings allowed on muffler. Must be removable.
Bodywork: CIK style per WKA section 208 – 4 cycle style per WKA section 258
Chassis: Full size sprint chassis – Specifications per WKA 201.1 – 201.12 and/or 251.1 – 251.12.

 

AGES 15 years & up
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
Clone Senior Sportsman
 
Clone Hoosier MMX-A or Bridgestone YLC 4.50/5” front & 7.10/5” rear (1) 360 lbs. with header/muffler option 1

OR
(2) 400 lbs. with header/muffler option 2 - with a maximum kart weight of 200 lbs.
 (Above two options will raced and scored as one class)

ADDITIONAL SPECIFICATIONS
Clutch: Drum style clutch only – No disc clutches
Maximum wheel width: Open for competitiors first two events, then: 6.5” (7” no go) front - 9.25” (9.75” no go) rear
Air Filter: Aftermarket air filters allowed. Maximum length of adapter – 1.375”
Header:
Option 1 (360#): Single stage, .75” Max OD, .635” Max ID. Maximum length of header and muffler is 15” and minimum is 10”.
Option 2 (400#): Must be double nutted – bracing and header wrap highly recommended. May not protrude into exhaust port.
Muffler:
Option 1 (360#): RLV Mini 91 with threaded nipple. Must be threaded on end of header and removable.
Option 2 (400#): RLV 4100, 4102, or 4104 - .1285 no go on baffle holes. No coatings allowed on muffler. Must be removable.
Bodywork: CIK style per WKA section 208 – 4 cycle style per WKA section 258
Chassis: Full size sprint chassis – Specifications per WKA 201.1 – 201.12 and/or 251.1 – 251.12.
Eligibility: The Sportsman class is intended to be an entry level class or for drivers not wishing to compete at the more competitive senior level. Competitors who win 4 races in a season and/or a season points championship shall not be eligible to compete in this Senior Sportsman class in subsequent years.

 

AGES 15 years & up
KART
CLASS
ENGINE TIRES WEIGHT
W/Driver
Briggs L0206 Senior
Light/Heavy
 
Briggs L0206 Hoosier MMX-A or Bridgestone YLC 4.50/5” front & 7.10/5” rear Light - 330 lbs
Heavy - 360 lbs
ADDITIONAL SPECIFICATIONS
See Per Briggs LO206 PDF rulebook
Clutch: Drum style clutch only – No disc clutches
Exhaust: RLV 4110
Bodywork: CIK style per WKA section 208 – 4 cycle style per WKA section 258
Chassis: Full size sprint chassis – Specifications per WKA 201.1 – 201.12 and/or 251.1 – 251.12.

 

Weights includes kart & driver after session.

Please Email us Or Call us at 678-381-8527 for additional information...