m.
Have any studs with more than three threads protruding from the rear of the Kart covered with appropriate nuts caps or suitable protective cover.
26. Side Bumpers 26.1. Side bumpers are mandatory in all configurations whenever CIK-FIA Homologated bodywork is not used. 26.2. Side bumpers must:
a.
b.
c.
d.
Be made from magnetic Steel tubing with a minimum outside diameter of 18mm and a minimum wall thickness of 1.5mm.
Consist of two bars each side of the Kart both bars being connected with two tubes and welded together and presenting a vertical flat face and they must be attached to the Chassis Frame by a minimum of two points. These two attachments must be parallel to the ground and must be a minimum of 450mm apart. Note for CIK-FIA Division 1 and 2 Superkarts the two attachments must be perpendicular to the axis of the Chassis-Frame and must be a minimum of 520mm apart.
Have a clearance between the bars and the tyres not exceeding 100mm( with front wheels in the straight-ahead position).
Not extend beyond the plane through the outside of the front and rear tyres with the front wheels in the straight-ahead position( dry configuration).
e. At all times cover a minimum of 66 % of the rear tyres. 26.3. The lower bar must:
a. Not exceed the height of the top of the rear axle. b. Have a minimum straight length of 500mm. c. Be 60mm ± 20mm from the ground.
26.4. The upper bar must:
a. Be joined to the lower bar at each end and also include two additional uprights. b. Have a minimum straight length of 400mm. c. Be 200mm ± 20mm from the ground.
27. Gearbox Short Circuit Bodywork
27.1. Gearbox Short Circuit bodywork is defined as including mandatory bodywork to general Short Circuit Kart regulations unless varied in the Class Regulations.
27.2. Lateral bodywork and front fairings must never cut the plane through the top of the front and rear tyres.
27.3. Rear vertical wing ends are permitted if Class Regulations allow but any form of wing or winglets or fully enveloping body panels are not permitted.
28. Gearbox Race Venue Event Kart Trim
28.1. Gearbox Race Venue Event Kart trim is defined as any combination of wings( either full width or part width), side pods which are above the plane of the top of the front to rear tyres, or a full width front fairing to Art. 29.10.
28.2. Wings are not mandatory. 28.3. If a front fairing is mandatory it will be specified in Class Regulations.
28.4. No part of the bodywork, including wings and end plates, shall be adjustable from the driving seat in racing condition when the Kart is in motion.
Motorsport UK National Competition Rules 2026 Edition 1
Chapter 18 Appendix 8- General Technical Regulations 677