National Championship Guidelines
Refer to the current year NHRA Rulebook for all applicable safety requirements
SUPER PRO ET (1/8 mile 4.30 –7.70)
Throttle Control: Permitted, see NHRA Rulebook General Regulations 1:12.
Transbrake: Permitted.
Line lock: Four-wheel line lock permitted.
Automated Shifter: Permitted. Bump boxes prohibited.
Delay Box: Permitted. One box/device may be attached to transbrake and/or throttle timer only. All wiring must be clearly identifiable for inspection. See General Regulations 8:2.
Ignition: Stutter boxes prohibited. Starting line and/or ‘high side’ rev limiters permitted. Three-steps, two-steps, rev-limiters or any other rpm limiting devices, legal unto themselves but altered or installed to function as a down-track rpm controller, prohibited. See General Regulations 8:3.
Switches & Buttons: All switches and/or buttons must be NHRA accepted standard mechanical connection type. Infrared lasers, retinal scan, fingerprint, light source or other non-mechanical type switch prohibited. See General Regulations 8:7.
Computer: Prohibited unless stock OEM equipment, see General Regulations 9:1
Data Recorder: Permitted, see General Regulations 9:2 & 9:10.
PRO ET (1/4 mile 9.00 – 13.99) Same as Super Pro with the following exceptions
Throttle Control: Throttle must be manually operated by the driver. Electronics, pneumatics, hydraulics or any other device may in no way affect the throttle operation. A dead stop under the carburetor or gas pedal is permitted. Throttle timers, counters prohibited.
Delay Box: Prohibited.
Tow vehicles: Prohibited.
SPORTSMAN ET (1/4 mile 11.60 – 19.99) same as Pro ET with the following exceptions
Line lock: Four-wheel line lock prohibited. Two-wheel line lock permitted, non-drive wheels only.
Automated Shifter: Prohibited unless OEM equipped.
Ignition: Crank trigger system prohibited unless OEM distributorless ignition.
Computer: Prohibited unless OEM equipped.
Data Recorders: Prohibited. See general regulations 9:2 & 9:10.
Exhaust: Muffler(s) required.
ET MOTORCYCLE (1/4 mile 7.50 – 15.99) same electronics rules as Super Pro ET
GENERAL INFORMATION
A competitor entered in the Summit Racing Series National Championship may not compete in any other category at the event except for another Summit Racing Series National Championship category and may not use the same vehicle in both categories.
Competitors in the National Championship must be a minimum of 16 years old.