CLASSES FOR 2021

THESE REGULATIONS/CLASSES ARE IN ADDITION TO AND NOT INPLACE OF THE ACU TECHINICAL REGULATIONS.

THE ORGANISERS RESERVE THE RIGHT TO IMPOUND ANY MACHINE, ITEM OF EQUIPMENT OR CLOTHING AT ANY TIME AND WITHOUT THE RIGHT OF PROTEST OR REFUND.

Sidecar 590 - 1300cc Open
Open to all three-wheeler outfits of any capacity, specifications, as per ACU 2021 Handbook.

Earlystocks and 175cc - 1300cc & 600cc Suzuki Bandits
Click here to download the Earlystocks Technical Regulations

GP125 - 450cc Single and Twin Cylinder
Includes: Moto 3 Honda NSF 4 Stroke. Kawasaki 400 & 300 4 stroke. Yamaha RS 400 Twin. KTM 390, Aprilia 450 (restricted) 4 Stroke Twin.

Pre-Electronic Injection
Up to 600cc and 601 - 1300cc machines. Generic and formula specifications.

Sounds of Music 2 Stroke Machines
Click here to download the Sounds of Music 2 Stroke Regulations

390cc - 650cc Minitwin, 390cc - 650cc Supertwin and Formula 400cc
Any four-stroke minitwin made for road use, or modified four-stroke supertwin, with water cooled engine up to 650cc, or an air cooled up to 820cc.
Any Formula 400cc production based 250cc two-stroke and 400cc four-stroke. Generic regulations. No slick tyres permitted.

Mallory Trophy
Open Class up to 600cc. And 601cc to 1300cc.

Open 401 - 600cc
Open to 401 - 600cc 4 cyl, 675cc and 765cc triples,750cc 2 cyl. Kawasaki 636, pre-2007 are also eligible.

Novice 175 - 1300cc
Riders must not have held an ACU Licence before 1st January 2018. Slick tyres allowed if licence permits. Exceptions to the above date by approval by the Secretary of the meeting.

Allcomers Trophy
597cc - 1000cc machines. Generic regulations.

CB500
EMRA 500 specifications. No slick tyres permitted.

Open 500cc
Open to all machines up to 500cc excluding formula 125cc.

NOVICE AND INTERMEDIATE NOVICE COMPETITORS ARE REQUIRED TO WEAR AN ORANGE VEST IN ALL RACES AND PRACTICE PERIODS.