b.
c.
d.
It must have minimum flat width of 38cm running into radiused corners and affording driver and if applicable Passenger equal protection.
It must be effectively mounted and braced to structural members forward and aft of the cockpit and not less than cockpit width.
It must be constructed of good quality seamless steel tubing of minimum 32mm diameter and wall thickness of 1.5mm.
26. ALL aluminium alloy Roll Cages are prohibited.
Motorsport UK National Competition Rules 2026 Edition 1
Chapter 7 Appendix 3- Roll Over Protection Systems( ROPS) 266