3.3. Minimum quantity of extinguishant:

3.3.1. AFFF foam (includes: FireSense Zero 2000 F-TEC etc) 2.4 litres

3.3.2. Gas (includes: Novec 1230 FX G-TEC/N-TEC Viro3 Zero 360 Extreme etc) 2.0 kg

3.3.3. Powder 2.0 kg

3.4. All extinguishers must be pressurised according with the manufacturer's instructions. Powder extinguishers must be pressurised to 8 bars minimum 13.5 bars maximum.

3.5. All extinguishers must be equipped with a means of checking the pressure of the contents. 3.6. The following information must be visible on each extinguisher:

• Capacity

• Type of extinguishant

• Weight or volume of the extinguishant

• Date the extinguisher must be checked which must be no more than two years after either the date of filling or the date of the last check or corresponding expiry date.

MOTORSPORT

Mechanical/Electrical

Mechanical/Electrical

Plumbed in saloon car system FIA Approved to Technical list 16 EX057.19

Plumbed in saloon car system FIA Approved to Technical list 16 EX056.19

Haylo is a Halon replacement extinguishing medium

Motorsport UK compliant our AFFF uses Aerospace grade aqueous foam

t : 079 7383 0695

www.pdextinguishers.co.uk

Motorsport UK 2025 National Competition Rules Chapter 7 Appendix 6 - Fire Extinguishers and Systems 267

3.7. All extinguishers must be adequately protected.

3.8. Their mountings must be able to withstand a deceleration of 25g. Furthermore only quick-release metal fastenings (two minimum) with metal straps are accepted. Anti- torpedo tabs are required. It is prohibited to mount bottles outside the main structure.

3.9. The extinguishers must be easily accessible for the Driver and the Co-Driver .

4. During events:

4.1. All plumbed-in extinguisher systems must be in an ‘ARMED’ condition (i.e. be capable of being operated without the removal of any safety device) at all times whilst competing or Practicing in races or Speed Events (including during post-Event Scrutineering ) and at all times that crash helmets are worn on Rallies (i.e. on Stages etc.).

4.2. Any plumbed-in extinguisher system found to be incapable of being operated will be the subject of a report to the Clerk of the Course / Stewards for possible penalty as an offence against Safety Regulations.

4.3. Checking for correctly ‘Armed’ extinguisher systems should only be carried out by ASN Scrutineers and / or Judges of Fact nominated for that purpose.

Motorsport UK 2025 National Competition Rules Chapter 7 Appendix 6 - Fire Extinguishers and Systems 268

CHAPTER 7 COMPETITOR VEHICLES AND VEHICLE SAFETY EQUIPMENT Appendix 7 - Seats Harnesses and Headrests

General

1. Seating 1.1. Have a normal adequate seat for the Driver (and Co-Driver where applicable).

1.2. With the occupant seated, the seat must be correctly located and securely anchored within the compartment and must not tilt, hinge or fold unless it is a production seat fitted with a serviceable locking mechanism preventing independent operation.

1.3. It must support and retain the Driver within the Vehicle.

1.4. The seat cushion (i.e. the part on which the occupant sits) when uncompressed, must not be less than 152.5mm below the top edge of the adjacent body side or door.

1.5. Any other seats fitted must similarly comply and all seats must face forward. 1.6. Vehicles of Periods A to D are exempt from this requirement. 1.7. If a single seater the maximum time for a Driver to get in or out of the Vehicle must not exceed 10 seconds.

2. Seats

2.1. All seats should be correctly located and securely anchored in such a way as to allow no movement in squab or backrest. When installing a Competition Seat, carry out the following checks before selection or purchase:

a.

Study the requirements of the Vehicle concerned and ask the manufacturer ’s advice and recommendations.

b.

Check that the seat is suitable for the type of forces to which it could be subjected. These will include fore and aft and lateral loadings.

c. Check that the seat carries full instructions for installation in your Vehicle . d. Check that suitable mounting installations are available from the manufacturer. e. Ask the manufacturer to confirm that the seat frame is suitable for your Motor Sport discipline. f.

If the original seat attachments or supports are changed, the new parts must either be approved for that application by the seat manufacturer or must comply with the following specifications (see Appendix 13 Diagram 48 ).

2.2. Supports must be attached to the shell / Chassis via at least 4 mounting points per seat using bolts with a minimum diameter of 8mm and counterplates, according to Appendix 13 Diagram 48 .

2.3. The minimum area of contact between support, shell / Chassis and counterplate is 40 sq cm for each mounting point.

2.4. In Series Production Cars manufacturers’ standard seat mounting points may be used.

2.5. If quick release systems are used they must be capable of withstanding vertical and horizontal forces of 18000N, applied non-simultaneously.

2.6. If rails for adjusting the seat are used, they must be those originally supplied with the homologated Vehicle or with the seat.

2.7. For new build Vehicles from 1st January 2021 , where transverse seat mounting rails are used, they must be compliant with Appendix 13 Diagram 66.a or homologated by the FIA or an FIA recognised ASN.

2.8. The end plates may alternatively be welded to the counterplate. 2.9. Multiple mounting holes, to a maximum of 4 at each mounting point, are permitted as shown in Appendix

Motorsport UK 2025 National Competition Rules Chapter 7 Appendix 7 - Seats Harnesses and Headrests 269

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XLT CARBON ENDURO 2x2

13 Diagram 66b . - c. 2.10. Appendix 13 Diagram 66 .a. - c Material specification: 2.11. Tube 2.12. Cold Drawn Seamless Unalloyed Carbon Steel Minimum Yield strength 350N/mm2 2.13. Minimum dimensions 35mm diameter x 2.5mm wall thickness 2.14. Box Section ( Structural ) 2.15. Unalloyed Carbon Steel 2.16. Minimum Yield Strength 350N/mm2 2.17. Minimum dimensions 35mm square x 2.5mm wall thickness

2.18. Any mounting holes drilled in the seat rails must have bushes installed, these must be fully welded. The bushes must be profiled to prevent them being pulled through, alternatively they may be of 'top hat' type inserted from below. Minimum bush diameter 13mm for M8 bolts, 15mm for M10 bolts. Multiple bush position are permitted.

2.19. The minimum overall length of the "U" shape extruded section is 50mm with a 2.5mm wall thickness. 2.20. Each mounting point must be capable of withstanding a force of 15000N applied in any direction.

2.21. The seat must be attached to the supports via 4 mounting points, 2 at the front and 2 at the rear of the seat, using bolts with a minimum diameter of 8mm and reinforcements integrated into the seat.

2.22. The minimum thickness of the supports and counterplates is 3mm for steel and 5mm for light alloy materials. The minimum longitudinal dimension of each support is 6cm.

3. Headrests

3.1. On all Vehicles where it is not mandatory it is strongly recommended that a head restraint in the form of a headrest be fitted as Head Restraints below.

4. Head Restraints 4.1. Head Restraints when required to be fitted, must be capable of restraining a 17kg mass decelerating at 5g.

4.2. Dimensions to be 100mms x 100mms and located such that the Driver ’s / Passenger ’s, head / helmet is restrained and cannot move past it under rearward forces or be trapped between the rollbar and the head restraint. It is recommended that it be within 50mm of the Driver ’s / Passenger ’s helmet when they are normally seated.

5. Harnesses (Seat Belts)

5.1. All seat safety belts must be complete units sourced from a recognised manufacturer and fitted in accordance with the manufacturers’ instructions, ASN recommendations or FIA requirements. ( Diagrams 49 , 50 , 51 , 52 and 65).

5.2. Where the Vehicle manufacturer ’s standard safety belts and associated fitments are not utilised, bolts must be steel and of a minimum 7⁄16in UNF or M12 (grade 8.8) or, for an FIA homologated harness, as specified by the harness manufacturer.

6. Three point

6.1. Either one diagonal shoulder strap and one lap strap, or two merged shoulder straps and one lap strap bearing an ECE 'E' mark. With three anchorage points on the Chassis /body shell or roll over bar of the Vehicle on either side and to the rear of the Driver ’s seat.

7. Four point 7.1. Two shoulder straps and one lap strap, with four anchorage points on the Chassis / body shell or roll over

Motorsport UK 2025 National Competition Rules Chapter 7 Appendix 7 - Seats Harnesses and Headrests 271