50cc Pro Mini
this really is the mini division!
official sponsor :: minibikemx.com
Wheel size: must be maximum 10" rear and 10" or 12" front Engine – Must be maximum 50cc. No stroked cranks. Must use stock sized valves. Permitted engine mods include: Piston, Cylinder head porting, Camshaft, carburettor, racing ignitions, air filter and exhausts. Transmission: Must be semi automatic, Permitted mods include replacement semi auto clutch units, close ratio transmissions, heavy duty clutch springs. Rolling chassis – Open Cradle Frames Only. Unlimited mods allowed.
Background (number board) colours: black with white numbers.
15 years or over to enter this class.
Open Mini
big engines... little wheels!
official sponsor :: devonshire terrace
Wheel size: must be maximum 10" rear and 10" or 12" front. Engine – Must be maximum 140cc. Any cylinder head, camshaft, piston permitted. Any ignition. Transmission. Can use manual clutch, close ratio transmission. Rolling chassis – Open Cradle
Background (number board) colours: red with white numbers.
15 years or over to enter this class.
Super-stock
highly competitive close racing
official sponsor :: splandscapes
This is a one make class based around the Kawasaki KLX110. The only other permitted bike in this class is a 2005 Suzuki DRZ110. Wheel size: must be maximum 12" rear and 12" or 14" front. Engine – Must be maximum 110cc. using stock KLX cylinder head – no head modifications allowed. No lightening or removal of internal stock parts. Replacement camshaft permitted, Must use stock piston and cylinder – no stroke cranks. Carburettor must be
stock. Transmission – Must use stock Kawasaki clutch, heavy duty clutch springs permitted. Must use stock Kawasaki 3 or 4 speed transmission. Rolling chassis – must use stock KLX110 frame and swingarm – replacement rear shock absorber allowed. Forks – must use stock KLX110 forks sliders and fork legs – replacement springs and internal mods permitted. Wheels – Must use stock Kawasaki hubs. Rim and spoke upgrades are permitted.
Background (number board) colours: blue with white numbers.
15 years or over to enter this class.
Open Mid-Size Pro
this
is where the fun gets a little more serious
official
sponsor :: stomp
Wheel size: must be maximum 12" rear and 12" or 14" front
Engine Must be maximum 160cc. Any cylinder head, camshaft,
piston permitted. Any ignition. Transmission. Can use manual
clutches and close ratio transmission. Rolling chassis – Open
Cradle Frames Only. Unlimited mods allowed
Background (number board) colours: White with black
numbers.
15 years or over to enter this class.
This is as the title says the mid-size pro, so
please ensure you enter the correct class when
booking in.
Over 35's
for those who have been there, done it & got the t-shirt
official
sponsor :: airportautos
Wheel size: must be maximum 12" rear and 12" or 14" front
Engine Must be maximum 160cc. Any cylinder head, camshaft,
piston permitted. Any ignition. Transmission. Can use manual
clutches and close ratio transmission. Rolling chassis – Open
Cradle Frames Only. Unlimited mods allowed
Background (number board) colours: Black with yellow
numbers.
35 years or over to enter this class.
Open Mid-Sized Clubman
this is more for the novice rider
official sponsor :: total extreme 21
Wheel size: must be maximum 12" rear and 12" or 14" front Engine Must be maximum 160cc. Any cylinder head, camshaft, piston permitted. Any ignition. Transmission. Can use manual clutches and close ratio transmission. Rolling chassis – Open Cradle Frames Only. Unlimited mods allowed
Background (number board) colours: Green with white numbers.
15 years or over to enter this class.
50cc
(6-8 years old)
official sponsor :: rb autos
Bikes are to be based on horizontal single cylinder four stroke with a maximum of 50cc. Wheel size must not exceed 10” on the rear. • Exhaust pipes, bars, plastics, wheel, tyres, sprockets, shocks and rev-boxes CDI s can all be upgraded, but the engines must remain stock. No stroker cranks. Open Cradle Frames Only.
Background (number board) colors: Black with white numbers.
Must be aged 6-8 on 1st May 2010.
110cc
(9-12 years old)
official sponsor :: immediate transport
Bikes are to be based on horizontal single cylinder 4-stroke with a maximum of 110cc. Rear wheel size must not exceed 10". Big valved heads ARE allowed, along with Takagawa super heads and other brands. No stroker cranks. Open Cradle Frames Only. Exhaust and suspension upgrades permitted.
Background (number board) colours: White with black numbers.
Must be aged 9-12 on 1st May 2010.
140cc
(13 -15 years)
official sponsor :: bens bikes
Bikes are to be based on horizontal single cylinder 4-stroke with a maximum of 140cc. Full tuning of engine is permitted. Wheel sizes must not exceed 12" rear 14" front. Open Cradle Frames Only. Full exhaust and suspension modification is permitted.
Background (number board) colours: Yellow with black numbers.
Must be aged 13-15 on 1st May 2010.
