30. Number Plates 30.1. Number plates must have rounded corners( with diameters 15 to 25mm) and 220mm sides.
30.2. Stick-on panels used on an existing surface in lieu of a number plate need not have rounded corners and must be at least 170mm high by 170mm width with a minimum 10mm space on all sides of the numbers.
30.3. Number plates or stick-on panels as described above must be displayed in accordance with App. 9 Drawing 14. The numbers must be at least 150mm high and 20mm stroke width.
30.4. Numbers must be fitted to front rear and both sides and must be securely attached and numbers always legible.
30.5. For Race Venue Events number plates must be carried front rear and on the side facing the Timekeeper’ s box.
a. The plates must be square with sides of minimum 250mm. b. The numbers must be minimum 200mm high with a minimum stroke of 30mm. c. The plates must be fixed so as not to bend or otherwise change their attitude in the airflow. 30.6. No Club may alter the requirements concerning the numbering of Karts.
30.7. The plates must be in opaque flexible plastic fixed in such a way that they are not deflected by the airflow. and the front and side plates may be made of fibre glass( polyester).
30.8. The plates must be solid or be attached to a solid backing and contain no holes other than those required for fixing.
30.9. The numbers must be of the‘ Classic’ type as shown below and represented with an Arial type font: 1 – 2 – 3 – 4 – 5 – 6 – 7 – 8 – 9 – 0.
30.10. Novice number plates will be black with either white or yellow numbers.
30.11. The ASN reserves the right to approve non-standard race numbers such as“ Grand Prix Winner”, GP and 0( zero) and also race numbers 1-10( one to ten). No other non-standard numbers or numbers 1-10 are permitted.
30.12. Those awarded their respective“ number”( one to ten) or non-standard plate may use it for the following year should they continue to race in the same Class and in the same type of event( Short Circuit Gearbox one to ten may not use their numbers for Race Venue Events or vice-versa).
30.13. As soon as Championship results are declared final the previous seasons plates may no longer be used and the new Championship winners will be the only Drivers allowed to use such numbers.
31. Weight
31.1. Class Regulations will define minimum Class weights which are defined as the minimum weight for the kart plus driver and equipment( race condition) at any time.
31.2. Subject to Art. 6 – 13 at the beginning of this Chapter clubs may run Classes to heavier weight limits( if ASN approval is given by the issue of a Kart Technical Exception( KTE)) but may not reduce the weight limits.
31.3. If it is necessary to use ballast in order to achieve a minimum weight this may be achieved by the addition of one or more solid blocks attached to the Chassis Frame, to a chassis auxiliary part( as defined in current FIA Karting Technical Regulations) except bumpers, or to the seat.
31.4. Maximum mass of a single ballast: 5.0kg. Combined ballast on the same attachment counts as a single ballast.
31.5. Ballast must be attached by means of tools with a minimum of two bolts each of minimum M8 size.
31.6. If the ballast is attached to a chassis auxiliary part, all bolts linking the auxiliary part to the Chassis Frame must be of the same minimum diameter as that used to attach the ballast itself.
Motorsport UK National Competition Rules 2026 Edition 1
Chapter 18 Appendix 8- General Technical Regulations 679