Our classes
Here you will find information on our race classes, including a link for those with detailed conditions.
Formula 400
Production based 250cc two stroke and 400cc four stroke. Moulded treaded tyres.
Open 500
Open up to 500cc.
Slick tyres permitted
National 600
Open 401 to 650cc four cylinder, 800cc three cylinder, 900cc twin cylinder. Slick tyres permitted.
National and above race license holders
Clubman 600
As National 600, but for Clubman or below race license holders only (as of 1st March for current year)
Previous Clubman 600 Class Champions are not eligible.
Phoenix Open
Open to all machines 250 GP and above (excluding Junior Supersport). Slick tyres permitted.
All competitors score Championship points.
Sound of Thunder
Open to all four stroke single, twin and three cylinder machines. Slick tyres are permitted.
Mini Twins
Four stoke, twin cylinder production based machines up to 650cc including up to 820cc air cooled twins. Max power 72bhp
Pre Injection 600 (incl. Veterans)
Non-fuel injected machines manufactured up to 2002. 401 to 600cc. Slick tyres are permitted.
Veterans for riders over 40 year old on 1st March in current year
King of Combe
Incorporated into the Phoenix Open races at our Castle Combe event.
Racing for the Rodney Gooch Trophy and a cash prize fund.
Prince of Pembrey
Incorporated into the Phoenix Open races at our Pembrey event.
Racing for the Lee Davies Motorsport Trophy and a cash prize fund.
Newcomers
3 categories: Up to 500cc / Middleweight / Open
For competitors who have gained their FIRST race licence since January 1st 2024.
There is a reduced entry fee for this class, it can only be entered as a 2nd ride.
Dispensation may be given to competitors who held a licence prior to Jan 1st 2024 who have completed no more than 5 events. Riders must apply for such dispensation in writing to raceadmin@ngroadracing.co.uk
Guest classes
ACU Ultra Lightweight Championship
Further information available on request from brett.moor1972@gmail.com
For further information please email raceadmin@ngroadracing.co.uk
PROUD HOSTS OF THE FOLLOWING SPECIALISED MOTORCYCLE RACING SERIES
