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Production regulations

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Engine capacity

Maximum 125cc/Minimum 115cc OE engine
The use of superchargers or turbochargers is prohibited

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Engine type

Only four stroke OE homologated road engines.
No competition engines
Any carb “UPTO” standard OE diameter permitted on carb engines

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Chassis

Seat subframe may be modified for race seat.

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Fuel mapping

Exhaust front pipe maybe modified or replaced
The only permitted  end can for 4 stroke engines will be the factory Original Equipment or an “unmodded/undamaged” powertech from Powertech UK

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Fuel injection

Standard OE ECU/CDI /Electrics must be used and airboxes must remain original and only the external rubber boot may be removed. Maximum hole size to be no more than 4225mm².

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Tuning

Engine Tuning is not permitted and must remain OE standard with no modifications at all. Starter motors if originally fitted must remain and be functional. Cutting of the ignition/fueling for the purpose of changing gears is allowed by a quickshifter mechanism.

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Bodywork

Any aftermarket fibreglass bodywork is permitted
Standard road bodywork is permitted but must have mirrors/stands removed. Head lamp and rear light glasses must be adequately taped to prevent splintering.

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Forks

The forks must remain standard OE, any internal modifications are allowed, external preload adjusters allowed. 

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Suspension

Rear shocks can be modified/replaced with no restrictions as long as they fit the original mounting points

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Brakes

Pads, lines, master cylinders, discs, and footrest/hangers are allowed to be changed. Disc’s must remain the OE diameter for the model of bike.

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Chain & sprockets

Any chain and sprocket size can be used.

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Wheels

Remain OE fitment for manufacturer permitted size 16″ 17″ 18″. wheel spacers may be changed

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Tyres

Any tyres permitted, tyre warmers are also allowed.

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General

The only liquid engine coolant permitted is water
Oil sump plug and filler plug must be lock wired
A red rain light fitted to the rear of the Motorcycle. You can remove clutch/sidestand switches

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Anything not mentioned in the above rules has to be agreed by the committee.

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2024 Production 
Champions

Randy Racing

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