The rules focus on helmet distance from the roll bar/main hoop and reinforcements to race seats of aluminum or fiberglass. 343 Posts . 99211 Rear Seat Mount Installation Guide. Use two gussets at each rear brace (four gussets in total) and you'll be bulletproof. SFI has a ton of upper mount rules but you'll be safe with a 6" square plate bolted to the back of the seat with a pivoting or sliding tube that bolts to the cross bar. By the way, NHRA now allows these rear braces to be bent (one bend only) to a maximum of 30 degrees (needs confirmation) so that the guys with street/strip cars can retain the back seat in the car for double dates and such. Part of NHRA’s mission is to preserve the right to race. 99203 & 99204 Seat Mount Bracket Installation Guide. Both seats include a black vinyl seat cover. 99212 Rear Seat Mount Installation Guide. Most guys will run the rear brace bars from the B bar … Seat Belt Installation Guide Mounting Brackets Installation Manual Platinum vs. Standard Nylon Restraints Overview Seating Positions Seat Belt Installation Manual Web Installation Manual. The driver's seat must be supported on the bottom and back by the frame or crossmember. This set of belts is a 5-point, 3-inch-wide webbing, racing harnesses from Autopower . Lockup converters are permitted on nitrous-assisted combinations. The aluminum drag-race seat is constructed from .100"-thick aluminum and features an extruded perimeter reinforcement and TIG-welded assembly. Second, the 5-point harness holds you snug in the seat so you can use your appendages to do more important things like steer, heel-toe downshift, and do victory donuts. Overdrive units are prohibited on all combinations. First things first, NHRA rules should be considered as a basic guideline for safety; Trunk mounted batteries must be separated by an aluminum or a steel partition in every instance, except when stored in a gas-tight NHRA approved box securely mounted, etc. SECTION 6: NHRA PRO MOD DRAG RACING SERIES (4TH Paragraph) (Page 5) Lockup converters are prohibited on supercharged and turbocharged combinations. The mounts should be at a 90-degree angle to the line of the driver's spine. 99214 Floor Seat Mount Installation Guide. The NHRA rules state, “All roll bars must be within six inches of the rear, or side, of the driver’s head, extend in height at least three inches above the driver’s helmet with driver in normal driving position or be within one inch of the roof/headliner in the area above the driver’s helmet, and be at least as wide as the driver’s shoulders or within one inch of the driver’s door.” Except as noted in SFI specifications, seats must be bolted with four bolts (and nuts and washers) on the bottom and one bolt in the rear into crossbar; all bolts must go into frame or crossbraces, ball-pins for seat attachment prohibited. 99202, 99207, 99208 & 99209 Rear Seat Mount Bracket Installation Guide. Therefore, all competitors must Is there a written rule about mounting the back of race seats to the roll bar ? A 1-to-1 relationship is mandatory in high gear for all transmission types. Seat mounts (tube and OEM styles) and seat belt mounts can also be found in this section. NHRA may enforce the same or similar requirements on other categories in the future. Discussion Starter • #1 • Oct 23, 2007. 99201 Rear Seat Mount Bracket Installation Guide. VanGilder says that the location of the shoulder strap mounts depends on the position of the driver. HEAD & NECK RESTRAINTS Information on Head and Neck Injuries at Short Tracks and Drag Strips In many communities, the right to race is contingent upon reducing noise and complying with local noise and muffler laws, ordinances, regulations, or agreements.