Quarter-Mile e.t.s |
6.00 to 7.49 |
7.50 to 9.99 |
10.00 to 10.99 |
11.00 to 11.49 |
11.50 to 13.99 |
14.00 & Slower |
Aftermarket Rear Axles |
Y |
Y |
Y |
2:11 |
2:11 |
2:11 |
Arm Restraints (Open Cars) |
Y |
Y |
Y |
Y |
10:3 11.99 |
10:3 |
Auto Trans Flexplate (SFI 29.1) |
Y |
Y |
2:14 |
2:14 |
2:14 |
2:14 |
Auto Trans Reverse Lockout |
Y |
Y |
Y |
Y |
Y |
Y |
Bellhousing (SFI 6.1/6.2) |
Y |
Y |
Y |
Y |
2:10 |
2:10 |
Driver Restraint System (SFI 16.1) |
Y |
Y |
Y 10:5 |
Y 10:5 |
C 10:5 |
10:5 10:11 |
Driveshaft Loop |
Y |
Y |
Y |
Y |
2:4 |
2:4 |
Electric 16.00 & Quicker |
Y |
Y |
Y |
Y |
Y |
2:4 |
Flexplate Shield (SFI 30.1) |
Y |
Y |
2:14 |
2:14 |
2:14 |
2:14 |
Flywheel/Clutch (SFI 1.1/1.2) |
Y |
Y |
Y |
Y |
2:5 |
2:5 |
Harmonic Balancer (SFI 18.1) |
Y |
Y |
Y |
Permitted |
Permitted |
Permitted |
Helmet (Snell 95 or SFI 41.1A min.) |
Y |
Y |
Y |
Y |
Y |
10:7 |
Liquid Overflow |
Y |
Y |
Y |
Y |
Y |
Y |
Master Electrical Cutoff |
Y |
Y |
8:4 135 mph |
8:4 |
8:4 |
8:4 |
Neck Collar |
Y |
Y |
10:8 |
10:8 |
10:8 |
10:8 |
NHRA Competition License |
Y |
Y |
10:4 |
10:4 |
10:4 |
10:4 |
NHRA Chassis Sticker |
Y |
Y |
4:4 |
4:4 |
4:4 |
4:4 |
Padding Roll Bar/Cage |
Y SFI |
Y |
Y |
Y |
10:6 135 mph |
10:6 135 mph |
Parachute |
Y |
Y |
4:8 150 mph |
4:8 |
4:8 |
4:8 |
Pressurized Bottles DOT (1800) |
Y |
Y |
Y |
Y |
Y |
Y |
Protective Clothing |
Y |
Y |
Y |
Y |
10:10 |
10:10 |
Roll Bar |
|
|
Y |
Y |
C/13:49 |
4:10 |
Roll Cage |
Y |
Y 135 mph |
4:11 |
4:11 |
4:11 |
4:11 |
SFI Chassis Specification |
Y |
4:4 180 mph |
4:4 |
4:4 |
4:4 |
4:4 |
Supercharger Restraints |
Y |
1:15 |
1:15 |
1:15 |
1:15 |
1:15 |
Taillight |
Y |
Y |
Y |
Y |
Y |
Y |
Transmission Shield (SFI 4.1) |
Y |
Y |
Y |
2:14 |
2:14 |
2:14 |
Window Net (Full-Bodied Cars)
| Y |
Y |
6:3 10:3 |
6:3 10:3 |
6:3 10:3 |
6:3 10:3 |
Y = Required C= Convertibles Number Refers to General Regulations |
In no way is this Quick Reference Chart intended to supersede or replace the current NHRA Rulebook |