Bikes allowed: Cag, Blata, Polini and GRC. Pocket bikes, 37cc stock motor with restriction plates
Cag, Blata, Polini and GRC Pocket bikes, 37cc non restricted (10yrs old up)
Bikes allowed: CRF50 and TTR50 only. No engine mods or knobby tires allowed.
Bikes allowed: Honda NSR50, everything must remain stock*, Yamaha YSR50, aftermarket carbs & exhaust are allowed. May also run 12” wheels.
Bikes allowed: GP & Motard frames, max displacement of 63.9cc (2 Stroke) & 128cc (air cooled 4 Stroke). Engine mods are allowed.
Thunderbike Unlimited - ages 14 & up
Bikes allowed: 150cc to 230cc Max displacement
Bikes allowed: GP or Motard frames, max displacement of 65cc (2 Stroke) & 150cc (air cooled 4 Stroke)
65 GP Heavy Weight
This class has the same restrictions as the 65GP class but for the big boys. Bikes must conform to the 65GP class specs however the rider must weigh more than 175lbs without gear.
Bike allowed: Must be a Honda Grom or Kayo MR with stock bore, head, cylinder, fork tubes and frame. No forced induction allowed. ECU plug ins (I.E. Power Commander and similar products) are allowed, however ECU must remain stock.
This class has the same rules as the 85/150 class, however no smaller displacement bikes allowed.
Bikes allowed: GP & Motard frame, displacement cannot be below or above 85cc (2 Stroke) & 150cc (4 Stroke).
Thunder Bike (spec class)
Bikes allowed: XR100, TTR125 and CRF 150F. XR’s can swap the front wheel only to a 16”, Only control mods are allowed (pegs, rear sets, handle bars, ect.).
*Suspension springs may be replaced but the internals must remain stock. Controls such as pegs, rear sets, throttle tubes, ect. May also be changed. Bodywork and gearing may also be changed.
Bikes Allowed: GP Chasis Only, Metrikit 80(2 stroke), Rs125 chassis (85cc 2 stroke) and Morowaki 250 (four stroke) Unrestricted class
Moped 75cc Modified Class.
Thunder Bike Unlimited Ages 14 & up, 150/230cc
-No license required.
-You will receive a paper to be filled out of what bike and class you will be racing in.(if not sure feel free to ask for me or Teresa and we will be happy to help you)
-You will receive a transponder(for timing) to be fitted on your bike.
-Along with your Class Registration, you will be signing a insurance waiver.
-We ask everyone to have registration done and have your bike taken to tech before 9 o'clock practice starts.
-We are looking for catch cans, peg/bar sliders.
-ALL riders must be able to hold their bike & pick their bike up on their own.