250 International
The lightning-fast pocket-rockets are the premiere class of Superkarting in Australia and around the world. With a
combined class weight (kart and driver) of 210kgs, they have a power to weight ratio impressive enough to make you
weak at the knees. With the latest motors pushing horsepower to a reliable 90 hp mark revving to 14,000 rpm and
utilizing 6 speed sequence gearboxes, the buzz when you open the slides is second to none. Incorporating full
aerodynamic bodywork and four-wheel disc brakes they require a unique driving style that anybody can get a huge
buzz from. This class can run a twin (2) cylinder engine or two separate engines. Minimum weight requirements is
218kg. Braking is controlled by calipers front and back.
250 National
The ‘250 National’ class is the entry level to 250cc racing..it’s grunty, it’s fast. In the main this class shares the same chassis
as it’s bigger brother the 250 Inter (250 International). The power plants (engines) are mostly from 250cc 2 stroke
Motocross bikes.
These engines generally undergo differing levels of modification for their application within superkart racing that will see
these happily rev upwards of 10,000 rpm and make in the region of 60-65HP with a total combined minimum weight of
208kg. They are capable of reaching speeds of 215mph at our faster tracks. This class can also run 450cc four stroke engines.
Braking is controlled by calipers front and back.
125 Open Gearbox
This class is the open 125cc gearbox class. It is open to the use of motor-cross two stroke engines but by far the popular choice are the grand prix engines supplied by Honda (rs125) and Yamaha (tz125). In this class you are allowed the use of full body kits & wings etc. Front and rear brakes are compulsory. Although not compulsory, leather race suits are highly recommended. To be successful in this class a competitor must be prepared to get his or her hands dirty as these grand prix engines require regular maintenance & tuning to make good use of up to 50 odd horse power they are able to produce. Running costs are reasonable. It could be said that due to the fact that these engines have only one cylinder that they cost half as much as a twin cylinder 250cc international superkart to run i.e….1 piston & ring, one crankshaft, one set of reed petals etc. This class can accommodate the ever popular KZ category (minimum weight of 177kg) and superkart layback seat style (minimum weight of 197kg). Braking is controlled by calipers front and back.
125 Non Gearbox
The Rotax Max is the NGB (Non Gearbox) class of superkarting. Perfect for budget conscious and perfect for those who don’t have a lot of mechanical knowledge. It’s
also perfect for those who prefer to arrive and race, spend more time enjoying the day with your mates as these superkarts just keep going. You can use any
Rotax Max engine. A second hand kart can be from $2500 upwards. But $3,500-$4,500.00 is more likely. Minimum weight requirements is 185 Kg. Braking is
controlled by calipers at the rear only.
Open Performance
This class of karting is predominately run in Western Australia to encourage sprint kart racers. With 2 sub-categories, up to 175cc non-gearbox, gearbox singles and
100cc twin-engined non-gearbox and 255cc motocross single cylinder engines. Open Performance has a minimum weight requirement of 195 Kg.
Note: Club events run for SKCWA drivers/members may be combined to any of the above categories or sub-categories as the Clerk of Course sees fit.
