Classes/Rules

Mayhem at mCELROY FLATTRACK

​​Bike Classes
50cc 
(Trophy 4 - 8yrs)

​65cc
 (Trophy 7 - 11yrs)

​85cc
(Trophy 9 - 15yrs)

​Pitbike
​ (Cash 12" Rear max)

​ Mad Dog
​(Cash Air-cooled 16" rear max)

​Vintage Bike
cash

​Amateur Open Bike
​(Cash 14yrs - up)

​Pro Open Bike
​(Cash 14yrs - up)
​
​Quad Jr.
​ (Trophy 125cc or less, 14yrs and under)

Open 3 Wheelers
​(Cash 16yrs and up)

​​Quad Am
(Trophy 16yrs and up)

Quad Pro
​(Cash 16yrs and up)

Kart Classes

Engine Rules

 Flathead – IKF Rules
Clone – AKRA Rules with following exceptions
CL-1 or 2 Cam, Billet Flywheel (recommended but not required)
Open Pipe with muffler, Open Clutch87 
Octane Pump Gas (No Ethanol)

Kid Karts (trophy)

Rookie 5-7 yrs (trophy)
(Class will be divided into smaller groups as needed based on qualifying times)
235lbs   Flathead Black .375 Restrictor on Alky
235lbs Flathead Purple .425 Restrictor on Gas
245lbs LO206 Animal Black .250 Restrictor on Gas
250lbs Clone Red .375 Restrictor on Gas
260lbs Animal Purple .225 Restrictor on Gas
270lbs Animal Purple .225 Restrictor on Alky
​Open clutch

Jr. 1 Med 8-11yrs
Flathead 230lbs. 0.440 Restrictor Plate (Blue)
Clone 260lbs. 0.425” Restrictor Plate (Green)

 Jr. 1 Hvy 8-11 yrs
Flathead 250lbs. 0.440 Restrictor Plate (Blue)
Clone 280lbs. 0.425” Restrictor Plate (Green)

​ Jr. 2 Med 12-15
Flathead 280lbs. 0.530 Restrictor Plate (Red)
Clone 310lbs. 0.500 Restrictor Plate (Purple)

​ Jr. 2 Hvy 12-15
Flathead 300lbs. 0.530 Restrictor Plate (Red)
Clone 330lbs. 0.500 Restrictor Plate (Purple)

 Stock Med16 & up
350lbs

​Stk Heavy 16 & up
370lbs

​Clone Med16 & up
350lbs 

Clone Heavy 16 & up
​370lbs

​RWYB 16 & up
370lbs 2 and 4 Cycle