250 GP MONO

Subject to the required and permitted alterations set out below, Solo 250 GP Mono machines must:-

1. Be as homologated by MA.
2. Be fitted with a single cylinder four stroke engine with integral gearbox with a capacity no less than 200cc and no greater than 250cc.
3. Be fitted with a complete upper and lower fairing or stream lining.
4. Chassis must be as manufactured by the manufacturer and homologated with MA. With no modifications.
5. Engine must be homologated with MA. And must be as manufactured by the manufacturer apart from the listed modifications set out below.
6. Carry all relevant Chassis and Engine numbers.
7. Fairings and or stream lining must be prodomently painted in the Engine Manufacturers Corporate colours ie. Honda=Red,  Kawasaki=Green Suzuki=Yellow, Yamaha=Blue, KTM=Orange

Tyres:

1. The choice of tyre is optional but any restrictions on the number of tyres that may be used must be included in the SR.
2. Must be commercially available in Australia
3. Be worn no more than the minimum tread depth indicators
4. Not have an augmented or modified tread pattern

The following may be altered, modified or replaced with parts not manufactured by the manufacturer:-

• Fuel metering jets, but carburettors and throttle bodies must remain as supplied by the engine manufacturer for that model.
• Piston,Pin,Clips and Piston Rings
• Wiring harness
• Spark plug type and range
• Internal suspension parts only
• External suspension springs
• Brake pads, linings and brake hoses
• Chains and sprockets providing the pitch remains the same
• Camshafts and cam wheels
• Valve springs, collets and retainers
• Footrests and foot controls, but replacements must be mounted on the frame at the original mounting points
• Clutch plates and springs
• Cylinder head gaskets
• Exhaust and muffler system
• Handle bars and handle bar mounted levers
• Carburettor or throttle body intake air funnels

The following OEM parts may be replaced with parts of the same Manufacturer from another OEM model

• Gearbox Shafts, gears and selector mechanisme

The following OEM Parts may be modified

• Cylinder head may be ported by removal of material only
• Piston valve pockets may be machined
• Compression ratio’s may be altered by machining of the cylinder and cylinder head surfaces
• Crankshaft balancing by normal OEM methods of drilling holes and not by excessive lightening, Crankshaft flywheel diameter and width dimensions must remain standard

Fuel

• Fuel must comply with GCR rule 15.5.0.1