Bracket I (Box) - sponsored by Pro Systems Carburetors
Any dial
Door Cars, Dragsters, Motorcycles
Electronics Permitted
Regular Event Entry $50/$20 re-entry
***Delay boxes permitted. The MSD Digital 7531, MSD Grid ARC Module 7761, and other devices used to control engine acceleration via rev limiting (stuttering) are prohibited at Northern Michigan Dragway. Devices that use slew rate or drive shaft speed to control the timing of the engine are also prohibited.
Bracket II (No Box) - sponsored by Hlavka Heating and Cooling
Any dial
Door Cars, Dragsters, Motorcycles, Snowmobiles
No delay box - Transbrake permitted
Regular Event Entry $40/$20 re-entry
***Delay boxes must be removed.***
Pro Trophy - sponsored by SK Customs in memory of Mike Peck
9.99 and faster
Door Cars, Dragsters, Motorcycles, Snowmobiles
No delay box - Transbrake permitted
Regular Event Entry $20/$10 re-entry
***Delay boxes must removed.***
Special exception of 10.00 & slower for grandfathered racers with 3 ST wins, former track champions,
or top 5 points finishers.
Street Trophy - sponsored by Eriksen's Towing & Recovery
8.00 and slower - Entry-level class** - not eligible for Points Program
Street Vehicles, Motorcycles
No delay box - Transbrake permitted
Regular Event Entry $15/$10 re-entry
Any racer who has won 3 class winner trophies at NMD must advance to another division.
Advanced Juniors - sponsored by Thirlby Automotive Mini Juniors - sponsored by ModuGo
Any dial
Mini (8-11), Advanced (12+ or by choice) - cannot run both
Junior Dragsters, Go-Karts with cage, Mini-bikes
Advanced Juniors - $20 Entry/$10 Re-entry
Juniors - $10 Entry/$10 Re-entry
Top Doorslammer - sponsored by Grand Rapids Machine Repair
Top qualifying 8 must be 5.99 or faster
2 qualifying rounds Friday/Saturday, 1 qualifying round + eliminations Saturday/Sunday
Pro Tree
$150 Entry
Run Order: 1 vs. 4, 2 vs. 3, 5 vs. 8, 6 vs. 7
$1200 to Win, $400 Runner-Up, $200 Semis (with a minimum of 8 entries)
Plus - consolation class for first round losers.
New for 2021: Top Doorslammer Points Program ($25 entry fee)
10 points for each main event round win, +3 win, +2 runner-up, +1 semi
10 point one-time bonus + 5 points per event for those entered in the program
3 points Top Qualifier, 2 points #2 qualifier, 1 point #3 qualifier
3 points to consolation race winner, 2 points to runner-up
STREET NIGHT - sponsored by Thirlby Automotive
2021 Events: May 21, June 11, July 16, August 13, September 24
Street Legal Vehicles Only - Bracket Races, Full Tree - 1st Round Re-Entry Available
Street Trophy Class - $15 Entry/$10 Re-entry - 8.00 & slower
High School Class - $15 Entry/$10 Re-entry - Must be enrolled in grades 9-12 during 2021 (includes incoming freshman & graduated seniors)
Open Money Class - $500 to Win - $25 Entry/$10 Re-entry - Street Legal, Any Dial, Full Tree
Chicks on Slicks - $20 Entry/$10 Re-entry - any vehicle, any tire, chicks only (points program available - $10 one-time entry)
May compete in multiple classes
GENERAL INFORMATION
Re-entry permitted with a 1st round loss only.
Re-entries will run one another before advancing to round 2.
No double entries allowed.
A driver may enter more than one vehicle, but not the same vehicle twice.
Separate drivers may enter the same vehicle.
Helmets are required for all juniors and vehicles 8.50 or faster.
Engine diaper or similarly approved Oil Retention Device required for vehicles 7.49 or faster.
For further specifications, please reference IHRA guidelines, available at: http://www.ihra.com/OnlineRulebook/