Proposed Production Class Rules for the 2007 Nationals and the 2008 Victorian MX season.

Production Classes: 50cc Div 1, 5cc Div 2.
90cc 2st. --- 110cc 4st. ( Capacities under review )
Senior Production.

Eligibility: All production classes are to be based on commercially and readily available Quads sold on the open market in Australia or Overseas.

1) Engines: All engines must remain standard as produced and sold by the manufacturer, no material may be removed by grinding, polishing, machining or cutting from any casing ,casting, reciprocating parts, transmissions, manifolds, clutch components, vee drives or sheaves, apart from cylinder reboring if the OEM offers oversize pistons/rings, with the exception that Generically engineered and/or manufactured engines may cross use engine components for reconditioning purposes, all cylinder head and base gaskets must be of the same type, material and thickness as standard. No AFTERMARKET pistons, rings, camshafts, valves / valve springs, manifolds, reed valves, reed blocks, clutch springs, clutch weights or sheaves may be used under any circumstances.

2) Frames: All frames must remain standard, frames may be repaired but must not be gusseted, braced, stiffened or strengthened, all engine mounts, mounting brackets and mounting hardware must remain standard
Nerf bars or foot mounting boards must be fitted, foot pegs may be changed if integrated with nerf bars, foot pegs or mounting boards may be raised in the 50cc classes to accommodate the short stature of some competitors but their position must remain as standard.
Axles, “ A “ Arms, swingarms and all steering components must remain as standard, steering dampers may be fitted, steering stems may be repaired but must remain of standard length, handle bar risers or mounting adaptors may be used, handle bars, grips, clutch perches, levers and throttle mechanisms may be changed, subframes may be repaired but must remain as standard no Aftermarket subframes may be used.
All bodywork and hardware must remain as standard, no cut down mudguards are permitted, seat covers may be changed but the height and contour must remain as standard.

3) Brakes: All brake lines, disc rotors, callipers, master cylinders, wheel cylinders, brake drums and cables must remain as standard, friction materials and fluids are free, park brake levers and actuators may be removed and block off plates may be fitted.

4) Exhaust systems: Spark arrestors may be removed provided they only unbolt or unrivet and require no cutting or grinding to remove, slip on mufflers may be used provided they do not require cutting ,grinding or welding to remove the original muffler or facilitate the fitting of the slip on replacement, all header and intermediate pipes must remain as standard, no full length Aftermarket or alternate model exhaust systems may be fitted under any circumstances, all exhaust modifications will be subject to current and/ or future GCR`s regarding noise emissions.

5) Air filters: All air filters must remain as standard fitment, filter element may be changed provide that it is the same shape and fitment as the OEM filter/filters and elements, Air box lids may be removed.

6) Fuel systems: All carburettors, EFI Throttle bodies and injector nozzles must remain as standard, carburettor main jets, pilot jets and needles may be changed, EFI fuel mapping modules may be used providing they are used in conjunction with and do not replace the OEM engine control unit (ECU) or computer and do alter ignition timing, duration, dwell or alter rev limits or rev limiters, no Aftermarket or Race kit ECU`s are permitted under any circumstances, Fuel as per GCR 12.9.

7) Suspension: Internal valving, oil, gas, pistons and springs may be changed, External springs may also be changed provided the same type of spring is used (i.e single rate replaces single rate etc.), all shock absorber bodies, shafts, assembled lengths, link`s, link ratio`s, mounting points and mounting components must remain as standard, no Aftermarket shock absorbers or suspension hardware can be used under any circumstances.

8) Wheels and Tyres: Tyres are free, Aftermarket wheels may be used provided they are of the same material, structure and offset as the OEM wheels, no wheels spacers or the reversing of rims is permitted.

9) Electrical systems; Tether type kill switches must be fitted and operational, all GLASS lenses must be removed, removal of all other lights, lenses and horns is recommended but not compulsory, switch assemblies may be removed or replaced to simplify their operation, any wiring removed from switch gear, lights etc. Must only be removed to the closest electrical connectors no cutting of the wiring loom is allowed except to facilitate the fitting of the tether type kill switch, no Race kit wiring looms are permitted, alternators, generators, regulators, rectifiers, batteries and ignition systems must remain as standard, no offset keyways, no Aftermarket ignition reluctors, igniters, electronic control units (ECU`S), CDI`s, ignition control units ( ICU`S), ignition coils, or timing alteration devises or modifications are permitted under any circumstances.

10) Cooling systems: Coolant as per GCR`s, all radiators, cooling fans and fins must remain as standard, radiator materials, mounting points, mounting hardware, hoses thermatic or mechanical fans and any and all cooling ducting must remain as standard.
Footnote: If it has not been specifically allowed within these rules then you must assume it cannot be done.