NHRA SUMMIT RACING SERIES FINALS
NORTHWEST DIVISION BRACKET GUIDELINES

ATTENTION SUPER PRO & PRO: AN OIL-RETENTION DEVICE WILL BE MANDATORY ON ALL VEHICLES RUNNING 9.99 & QUICKER OR EXCEEDING 135 MPH AT THE SUMMIT E.T. FINALS EVENT- MOTORCYCLES & SNOWMOBILES EXCLUDED. SEE “OIL RETENTION DEVICE” IN SECTION 4B PAGE 10 OF THE NHRA RULEBOOK FOR RETENTION DEVICE CRITERIA

SUPER PRO ET (1/4 mile 7.00 – 11.99)
1. Computer: Prohibited unless stock OEM equipment or OEM replacement. See general regulations 9:1.
2. Data Recorders: Permitted. See general regulations 9:2 & 9:10.
3. Delay Boxes: Permitted. One box/device only attached to transbrake and/or throttle timer only. Delay box may only display delay amount. All direct wiring must be clearly identifiable to the tech inspector. See class and General Regulations Section 8.
4. Transbrake: Permitted.
5. Line lock: Four-wheel line lock permitted.
6. Automated Shifter: Permitted.
7. Throttle Control: Permitted per NHRA rulebook.
8. Ignition: Stutter boxes prohibited. Three-steps, Two-steps, or single stage rev limiters permitted. Any rpm limiting device legal unto themselves but altered or installed so as to function as a down-track rpm controller, prohibited.
9. Switches & Buttons: All switches and/or buttons must be standard mechanical connection type. Infrared lasers, retinal scan, fingerprint, light source or any other non-mechanical type switch and/or button prohibited.

PRO ET (1/4 mile 9.00 – 13.99)
1. Computer: Prohibited unless stock OEM equipment or OEM replacement. See general regulations 9:1.
2. Data Recorders: Prohibited. See general regulations 9:2 & 9:10.
3. Delay Boxes: Prohibited.
4. Transbrake: Permitted. Transbrake switch must be NHRA-accepted; contact Division Tech Director for accepted list.
5. Line lock: Four-wheel line lock permitted. Line lock switch must be NHRA-accepted.
6. Automated Shifter: Permitted.
7. Throttle Control: Throttle must be manually operated by the driver’s foot. 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.
8. Ignition: Stutter boxes prohibited. Starting line and/or ‘high side’ rev limiters permitted (i.e. two-step). Three-steps prohibited.
Two-steps, rev limiters or any other rpm limiting devices, legal unto themselves but altered or installed so as to function as a downtrack rpm controller, prohibited.
9. Switches & Buttons: All switches and/or buttons must be standard mechanical connection type. Infrared lasers, retinal scan,
fingerprint, and light source or any other non-mechanical type switch and/or button prohibited.
10. Tow vehicles: Prohibited.
11. Full-bodied vehicles may not cross the starting line on any burnout.

SPORTSMAN ET (1/4 mile 12.00 & Slower)
1. Computer: Prohibited unless stock OEM equipment or OEM replacement. See general regulations 9:1.
2. Data Recorders: Prohibited. See general regulations 9:2 & 9:10.
3. Delay Boxes: Prohibited.
4. Transbrake: Prohibited.
5. Line lock: Four-wheel line lock prohibited. Two-wheel line lock permitted on non-drive wheels only. Line lock switch must be NHRA accepted.
6. Automated Shifter: Prohibited unless OEM equipped. Electronic or pneumatic shifter permitted; must be manually activated by driver.
7. Throttle Control: Throttle must be manually operated by the driver’s foot. 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.
8. Ignition: Stutter boxes prohibited. Single stage ‘high side only’ rev limiters permitted. Starting line rev limiters prohibited. Rev limiters or any other rpm limiting devices, legal unto themselves but altered or installed so as to function as a down-track rpm controller prohibited. Crank trigger system prohibited, unless OEM distributor-less ignition. Ignition systems equipped with built-in two step rev limiters must have the ‘low side’ (start line) function disabled.
9. Switches & Buttons: All switches and/or buttons must be standard mechanical connection type. Infrared lasers, retinal scan, fingerprint, and light source or any other non-mechanical type switch and/or button prohibited.
10. Tow vehicles: Prohibited.
11. Sportsman E.T. vehicles may not cross the starting line on any burnout.

SLED/BIKE ET (1/4 mile 7.00 & slower)
Same electronic rules as Pro cars applies to motorcycles; data recorders permitted.

HIGH SCHOOL ET (1/4 mile 11.00 and slower)
Same rules as Pro or Sportsman; limited to no quicker than 11.00 E.T. (1/4 mile).

Summit E.T. Finals JR LIGHTNING (13 years & older)
Summit E.T. Finals JR THUNDER
(8 years – 12 years old)

NO PASSENGERS ALLOWED IN ANY VEHICLE

Refer to the current NHRA Rulebook/s and NHRA Rule Amendments for all applicable safety requirements in each ET Bracket.