Following recent National Banger action, the National Banger Committee are advising a change to the rules on car construction for vehicles with fibreglass roofs.

 

Vehicles with fibreglass roofs, must be fitted with a 4 post roll cage to protect the driver.

This must be a minimum of 50 x 50mm steel box section with uprights in the Passenger footwell next to the gearbox tunnel and a further upright in the drivers footwell against the A pillar. 

These uprights, must be bolted or welded in place to the floor or pillar, with a minimum of 200 x 200 x 4mm steel plate to distribute the load. 

These uprights must also be connected together, with 50 x 50mm steel box section along the bulkhead / above the steering column and also at roof height.

Both front uprights, must be connected to the traditional roll cage behind the drivers seat at roof height and be suitably fixed by either bolting or welding.

 

Drivers are reminded that a roof plate must be fitted to the top of the roll cage structure and be securely fastened on all 4 sides above the driver, by either bolting or welding.

The roof plate must not be bolted to any part of the fibreglass roof.

A full length steel plate behind the drivers seat must also be fitted as per the current National Banger rules.

No additional supports are allowed into the rear of the vehicle.

 

13 February 2026

Last updated  13 February 2026 20:39