Youth winged Outlaw
WKA/IKF Engine rules
Age 5-7 yrs. 235# min. Briggs Black plate.
5-8 yrs. 245# Briggs Blue plate.
8-13 yrs. Boxstock 275# Briggs.
Adult Open Winged Outlaw
125cc/250cc
Age 14 -up, gasoline, racing fuel ok. Open tire rule, 125cc weight is #360. 125cc two stroke engine only, open mods. 250cc weight is #425. 250cc two stroke engine only, single cylinder, 72mm maximum stroke, stock cylinder, no big bore kits, stock cylinder head, any normally aspirated carburetor, no electric controls or injection.
500cc
430# min. 14 yrs. And older. 550 cc max no big street motors 600, 750 1100cc etc. Open tire rule. Right rear must durometer 55.
Open class and Run Whatcha Brung
Vehicle must be of safe design and not pose hazards to persons or the facility.
Management reserves the right to allow or disallow any vehicles. No cars.
Briggs classes Junior I
5-9 yrs. Old Red plate
Parent or guardian assist. #35 chain, open tire rule, must run wide rear bumper covering at least half the rear tire, must have nose or approved front bumper covering tires. Methanol, no hot fuels. Catch can req'd. Stock tech parameters apply. See adult .233 classes. Pace car may be used for starts.
Junior II
10-14 yrs. Briggs Gold plate
#35 chain, must have rear bumper covering half of rear tires min. Must have nose or approved front bumper covering front of tires. Methanol, no hot fuels. Catch can req'd. Open tire, numbers on all four corners. #300 weight minimum. Weight classes to be added depending on counts. Stock briggs tech parameters apply. See adult .233 classes.
Stock .233 Briggs
WKA/IKF Engine Tech
Stock Animals run with Gold Plate
14 yrs. -up #360lbs. # 35 chain. Must run stock tank. Tank should be braced. Catch can req'd. Stock flywheel , no modifications no 3 horse. No aftermarket heads, no long rods. Aftermarket air filter ok, cannot act as an air-ram. No hot fuels, will be teched with water clear method. Must run stock coil in stock location. Ohm is subject to tech 2-5k. Block intake inlet is .880 NO GO. Must not be altered anywhere in the opening. Block exhaust outlet is 1.005 NO GO. Must not be altered anywhere in the opening. Any other porting, dimpling ok. Any header, must be braced and not to extend past rear bumper. Wrap is recommended on loop pipes. Mufflers are not required. No pulse type fuel pumps. Stock carb, no billets. No fun kart carbs. Air horn inlet is 1.011” max. Rear bore is .696 NO GO. No mods to throttle shaft or butterflies. Torx screw o.k. No funneling/ mods to jet or holes. No enlarging of pickup tubes. Screen is non-tech. Piston pop up at wrist pin centerline is .015” Max. Valve spring wire diameter is .092” max. Head bolt holes are .348” NO GO. Kart must have legible numbers on all 4 corners. Classes/ weights may be combined depending on counts. Tech items may be modified, added, or deleted at the track’s discretion. Tech man’s decision is final.
Stock Appearing Flathead
16 yrs.-up. #300lb. Motor must be stock upon visual inspection. Do what you want to the inside. Billet Carb ok. Fun kart carb ok. Must run stock tank. No Tillotson carbs. Billet side cover ok. No hot fuel. Tech items may be modified, added, or deteted at the track’s discretion. Tech man’s decision is final.
