US 60 Dragway
Extreme Radial Series Rules
(Revision 3/2/2026)
RACE PROCEDURES
All US 60 Dragway Extreme Radial Series Categories
Proper Use of Safety Equipment
Seat belts must be worn and adjusted so the driver’s torso and head cannot extend outside the roll cage. Loosening or removal of seat belts, helmets, gloves, window nets, lifting of helmet shields, or removal of any safety equipment is prohibited from the time the vehicle leaves the ready line until it is on the return road.
Fire bottle safety pins or clips must be removed from fire suppression controls during this same time period. Fresh air systems must be on and provide airflow to the driver’s helmet from the time the vehicle leaves the ready line until the vehicle is on the return road.
Violators will be subject to disciplinary action at the sole and absolute discretion of US 60 Dragway.
Technical Inspection
Prior to competition, all cars and drivers must pass an initial technical and safety inspection. After a car has been inspected and classified, no class changes are permitted unless authorized by a US 60 Dragway official.
US 60 Dragway technical and safety inspectors may re-inspect any car or driver at any time during the event. If non-compliance is found, the participant may be disqualified. US 60 Dragway reserves the right to inspect any vehicle at any time. Deviations or exceptions may be permitted if US 60 Dragway officials determine they do not provide a competitive advantage.
Competition
In the interest of maintaining close, fair, and safe competition, US 60 Dragway reserves the right to make rule adjustments to any class at any time. This process exists to fairly address the wide variety of engine and body combinations.
Official Notification
All rule changes, additions, deletions, and clarifications will be published on US60dragracing.com.
US 60 Dragway Competition Numbers
All contestants must display a permanent driver number at all US 60 Dragway Extreme Radial Series events. Class designation and car number must be clearly visible on windshields, side windows, and rear windows on bodied cars, or on a hood scoop or visible area on open-bodied cars, altereds, and dragsters.
AccuTime Timing System
All US 60 Dragway events utilize AccuTime Timing Systems. AutoStart is ON with a 7-second timeout (10 seconds for 6.50 and Pro-Tree Bracket).
Warm-Ups
A driver must be seated in the normal driving position anytime the engine is running while the vehicle is on the ground. The only exceptions are when the coupler or driveshaft has been removed, or when the vehicle is properly supported on jack stands.
Burnouts
Burnouts are restricted to designated areas using water only. Once a competitor enters the water box, they are committed to the run. One minute is allowed to restart if the vehicle loses fire.
Crossing the centerline during a burnout is not a disqualification. Fire burnouts are prohibited. One burnout across the starting line under power is allowed.
Staging
Vehicles must be ready to race upon reaching the front of the staging lanes. Entrants have two minutes to start after being directed at the ready line. Push-starting or push-staging is prohibited.
Re-staging after the starter’s signal is prohibited.
Deep Staging is Permitted in all categories at your own risk.
Any driver leaving before activation of the start system will be disqualified.
Dial-ins may not be changed once the vehicle leaves the staging lanes unless authorized due to extended downtime.
Qualifying
All qualifying attempts must be self-start and self-stage. A driver may not compete in more than one vehicle in the same category at an event.
If a vehicle breaks after staging and receiving the start signal, a 28-second time will be issued and counted as a qualifying attempt. Ties in qualifying are broken by top speed or reaction time as specified by category.
Driver and/or Vehicle Changes
Driver or vehicle changes may be approved at the sole discretion of the Competition Director under limited circumstances. Only one action per event is permitted.
Replacement Driver Conditions
Original driver must have passed inspection
Replacement driver must be properly credentialed
Original driver is withdrawn and cannot be reinstated
All previous times are void
Driver must re-qualify
One replacement per team per event
Replacement Vehicle Conditions
Original vehicle withdrawn
Replacement vehicle not used by another competitor
Must pass inspection
Same class and category
All previous times void
No checkout runs
One replacement per team per event
Class Changes
No class changes are permitted after inspection. Mechanical changes are allowed only if the vehicle remains within the original class.
Ladders
Pairings are based on US 60 Dragway ladder charts, qualifying elapsed times, and chip draw results.
Breakout Rules
Breakout rules apply to Extreme Street, 5.30 Index, 6.50 Index, and Pro Tree Bracket with specific exceptions outlined for fouls, single runs, and double breakouts.
Single Runs
A driver on a single run is considered the winner upon staging and receiving the start signal. Boundary violations void elapsed times for lane choice.
Lane Choice
Lane choice procedures vary by category and are based on elapsed time, reaction time, index, or drawn order as defined.
Disqualifications
US 60 Dragway participation requires good standing. Drug-related or serious offenses may result in immediate expulsion and forfeiture of awards. Boundary violations, red-light fouls, and unsafe vehicle control may result in disqualification.
Oil Down Penalties
Oil downs may result in fines, suspension, or loss of future participation. The Event Director’s decision is final.
Payout Policy
Payouts are determined by US 60 Dragway. All required paperwork must be completed before payouts are issued.
Rain Out Policy
Events delayed by weather may continue the next day or at a future event. US 60 Dragway reserves the right to adjust schedules as needed.
Pre-Race and Post-Race Testing
No testing is allowed during race week. Private testing is permitted Monday through Wednesday. Post-race testing is allowed after event completion.
Weighing of Vehicle
Scaling is mandatory. Failure to report to scales may result in disqualification or voided runs.
General Guidelines
US 60 Dragway reserves the right to modify rules, deny participation, and enforce compliance at its discretion.
Restricted Area Access
Maximum of five crew members allowed at the starting line. Proper and appropriate attire is required. Red flashing lights require immediate clearing of the starting line area.
Use of Likeness
All credentialed participants grant US 60 Dragway rights to use their likeness, vehicles, and activities for advertising, promotion, and media purposes.
Points & Related Programs
The US 60 Dragway Extreme Radial Series Championship will be contested across all scheduled Extreme Radial points events during the 2026 season. Drivers will compete for the US 60 Dragway Extreme Radial Track Championship based on total points accumulated throughout the season.
All scheduled Extreme Radial events are points races.
CHAMPIONSHIP ELIGIBILITY
Drivers must register for the US 60 Extreme Radial Points Program.
Points are awarded to the driver only and are non-transferable.
Drivers must take the tree under power during at least one qualifying session to earn participation points.
Points begin accumulating once the driver accepts the tree in qualifying.
All events count toward the championship. No drop races.
If eliminations are not started due to weather or unforeseen circumstances, the event will not count toward the championship.
PARTICIPATION POINTS
10 Points — Awarded to all drivers who take the tree in at least one qualifying session under power.
QUALIFYING BONUS POINTS
#1 Qualifier: 8 Points
#2 Qualifier: 7 Points
#3 Qualifier: 6 Points
#4 Qualifier: 5 Points
#5 thru #10 Qualifier: 4 Points
#11 thru #16 Qualifier: 3 Points
#17 thru #24 Qualifier: 2 Points
#25 thru #32 Qualifier: 1 Points
If more than 32 cars qualify, bonus points will still only be awarded to the Top 32.
ELIMINATION ROUND POINTS
Points will be awarded per round win.
20 Points Per Round Win Including the Finals
EVENT BONUS POINTS
2 Bonus Points — Event Winner
1 Bonus Point — Event Runner-Up
SEASON PARTICIPATION BONUS
Drivers who enter every Extreme Radial points event during the season will receive:
15 Championship Bonus Points
SEASON FINALE BONUS
The final points race of the season will award:
2x Elimination Points (40 Points Per Round Win)
Participation and qualifying points remain standard
(This maintains excitement without destabilizing the championship.)
SUBSTITUTE DRIVER POLICY
To support car count and continuity:
A Substitute Driver Form must be completed and approved before staging.
Substitute drivers may not be earning points in Extreme Radial that season.
Once a substitute driver takes a qualifying attempt, the original driver forfeits driving privileges for that event.
Points earned will be credited to the registered points driver.
Only one substitute driver usage permitted per season.
Substitute drivers are not permitted at the season finale.
TIE BREAKER PROCEDURE
If a tie exists at season end, the following will determine the champion:
Most event wins
Most event runner-ups
Most events entered
Most total round wins
If a tie still exists after all criteria are applied, head to head match ups will be used to decide position.
UNLIMITED
The Unlimited Class is designed to be a no-holds barred Door Car only class. The only rule is that it must be a door car with functioning doors. Any and All Engine and Power Adder combinations are allowed to compete in this Heads-Up NO-TIME Class.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: No Times will be shown. Chip Drawn Ladder First Round.
REQUIREMENTS
Must be a Door Car with Functioning Doors.
PRECISION TURBO & ENGINE LIMITED 275
Limited 275 is a heads-up class designed for small tire, single power adder small block and big block engine combinations to compete on the eighth mile. Centrifugal Superchargers, Turbochargers and Nitrous Combinations are restricted to specific dimensions/sizes to ensure overall class parity. All entries have the option to run either a 275 or 28 x 10 drag radial tire or 28inch by 10.6inch bias slick on any type of rear suspension.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: Times will be shown. Chip Drawn Ladder First Round.
MINIMUM WEIGHT REQUIREMENTS
Boosted Hemi Combinations - 3,275 lbs
BB Boosted Combinations - 3,100 lbs
BB Nitrous Combinations - 2,500 lbs
SB Single Turbo ( Up to 110mm) - 2,400 lbs
SB Single Turbo (111 - 122mm) - 2,500 lbs
SB Twin Turbo ( Stock Bore Space) - 2,600 lbs
SB Twin Turbo ( 4.5 - 4.6 Bore Space) - 2,800 lbs
SB Nitrous - No Minimum Weight
SB Centrifugal Supercharger (Stock BS) - 2,600 lbs
SB Centrifugal Supercharger (4.5 - 4.6 BS) - 2,800 lbs
Single Turbo Charged Applications are limited to a maximum of a single 122mm Turbo Charger.
Twin Turbo Charged Applications are limited to a maximum of a Twin 88mm Turbo Chargers.
All Centrifugal Supercharged Entries limited to a maximum of 140.99mm inducer wheel.
MARINE SERVICE COMPANY OUTLAW 8.5
Outlaw 8.5 is a heads-up, 1/8-mile racing category open to rear-wheel-drive vehicles representing a wide range of body styles and eras, including classic 1950s steel-bodied cars, 1960s muscle cars, late-model vehicles, hot rods, and trucks. This class is primarily limited by rear tire size and is intended to promote close, competitive racing. Competition is contested on a .400 Pro Tree with visible time displays. All rules are subject to change at the discretion of race officials.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: Times will be shown. Chip Drawn Ladder First Round.
TIRES
Rear tires are limited to 26×8.5 slicks or 235-size drag radials. Automotive-type racing tires only.
ENGINE & POWER ADDERS
Single turbo small block applications are limited to one turbocharger with a maximum size of 94mm and must use inline valve head combinations only.
Small block twin turbo applications are limited to a maximum 76mm turbocharger configuration.
Big block boosted applications are prohibited.
Centrifugal superchargers are limited to a maximum size of an F2 ProCharger or equivalent from other manufacturers.
The use of billet engine blocks, billet cylinder heads, or billet intake manifolds is strictly prohibited.
CHASSIS & SUSPENSION
All vehicles must retain the factory firewall location. Stock-style suspension is required on all vehicles. Vehicles originally equipped with leaf spring suspension are permitted to convert to a ladder bar suspension setup.
LONNIE NAVE’S EXTREME STREET
Extreme Street is a variable index class contested with scoreboards active. The index used for eliminations will be determined by a random chip draw conducted prior to the first round of eliminations. Index values will vary by event and will be selected from 4.45, 4.50, or 4.55.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: Times will be shown. Chip Drawn Ladder First Round.
TIRES
Rear tires are limited to 275 radial tires or 28×10.5 slicks.
ELECTRONICS & CONTROLS
Throttle stops and delay boxes are strictly prohibited.
VEHICLE REQUIREMENTS
Door cars only.
RC COMPONENTS 5.30 INDEX
5.30 Index is designed as a budget friendly class for door cars only. Any engine, power adder, or tire combination is permitted.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: Times will be shown.
RACE PROCEDURE
Qualified by closest to the index (5.3000) in all qualification attempts.
Will be placed on a pro ladder based on qualifying results for eliminations. (All-Run Field)
VEHICLE REQUIREMENTS
Door cars only.
ELECTRONICS & CONTROLS
Throttle stops prohibited.
The use of ignition timing and or restrictor plates are permitted to be used to tune to the index.
6.50 INDEX
6.50 Index is designed as a budget friendly class for door cars only. Any engine, power adder, or tire combination is permitted.
RACE FORMAT
Distance: 1/8 Mile. Tree: .400 Pro Tree. Clocks: Times will be shown.
RACE PROCEDURE
Qualified by closest to the index (6.5000) in all qualification attempts.
Will be placed on a pro ladder based on qualifying results for eliminations. (All-Run Field)
VEHICLE REQUIREMENTS
Door cars only.
ELECTRONICS & CONTROLS
Throttle stops prohibited.
The use of ignition timing and or restrictor plates are permitted to be used to tune to the index.
PRO TREE BRACKET
US 60 DRAGWAY SUPER PRO RULES APPLY
RACE FORMAT
Distance: 1/8 Mile. Tree: .500 Pro Tree. Clocks: Times will be shown.
RACE PROCEDURE
RANDOM BYE RUN FIRST ROUND
SUBSEQUENT ROUNDS WILL BE DETERMINED BY BEST WINNING REACTION TIME (BYE RUNS CARRY)
WILL BE PLACED ON A PRO LADDER AT 8 CARS OR LESS.