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International Harley
Drag-Racing Association

International Harley Drag-Racing AssociationInternational Harley Drag-Racing AssociationInternational Harley Drag-Racing Association

Welcome to The International Harley Drag-Racing Association

Welcome to The International Harley Drag-Racing AssociationWelcome to The International Harley Drag-Racing Association

2022 IHDRA Classes

Xtreme Outlaw

Pro-Comp Outlaw

Xtreme Outlaw

 The Premier Outlaw Class.  The Quickest & Fastest Baggers and Outlaw Bikes in the World compete in this class.  The rules below say it all... These bikes do what some once say was impossible as they run in the 7 Second Zone! 

Pro-Outlaw

Pro-Comp Outlaw

Xtreme Outlaw

These BIG cubic inch ALL MOTOR Baggers Have Bragging Rights!  These High RPM, High Horsepower Baggers pack some Serious Punch pushing a maximum of 160 cubic inches of Harley Muscle at a 70" wheelbase!  Look for BIG Money Grudge Bets trackside when these Monsters run.

Pro-Comp Outlaw

Pro-Comp Outlaw

Pro-Comp Outlaw

 These "Power Adder" Big Twins have a Maximum of 143 cubic inches of Muscle at a 70" wheelbase.  Will you see a Turbo, Nitrous, Blown, or Normally Aspirated bike at the line?  They all come together for this HOT class that can create quite the platform for Grudge Racing!  They make BIG Power, the Trick is Managing all that Horsepower and Torque! 

Super Stock

Top Eliminator

Pro-Comp Outlaw

Modeled in part by the highly successful and well know NHRA class of super stock.  These Big Twins pack a Maximum of 131 cubic inches of Harley muscle.  The ALL MOTOR, Foot Shifted racing is sure to be some of the Very BEST Harley Drag-Racing in the World!  The Very Popular 131" engine is widely used and very easily built with relatively easy sourced parts.  Harley-Davidson dealers even sell a 131" Bagger right off the showroom floor.  The 66" wheelbase allows for better racing, harder launches, 

Top Eliminator

Top Eliminator

Top Eliminator

Calling ALL Gasoline or Methanol Powered Harleys to the line!  Open to Baggers and Non-Baggers alike, the 9.30 Index (1/4 mile) offers some of the stiffest competition at the track!  This class is filled with one common goal to be "Top Eliminator"!  You will see a variety of Fast Harleys here all competing to be the Best!  Expect Great Racing with BIG fields of bikes here!!! 

Hot Rod Bagger

Top Eliminator

Top Eliminator

 Designed for the Stock Wheelbase Harley Baggers.  The class name is exactly what this is... Hot Rod Bagger!  The Stock wheelbase, true DOT front and rear tires, pump gas, and foot shifted Baggers will be a challenge to get a hard launch and put all that power to the ground using a Maximum 131 cubic inches.  The 131" engine is relatively easy to build with good parts availability.  Harley-Davidson dealers also sell a motorcycle off the showroom floor with a 131" engine. 

2022 IHDRA rules

Xtreme Outlaw (XO)

The Premier Outlaw Class. The Quickest & Fastest Baggers and Outlaw Bikes in the World compete in this class. The rules below say it all... These bikes do what some once say was impossible as they run in the 7 Second Zone!

- 45 Degree H-D V-Twin; Unlimited Cubic Inch

- 74" Maximum Wheelbase (Front Axle Center to Rear Axle Center)

- Maximum (1) Power Adder; (Turbo, Nitrous, Blower, etc....)

- Open Fuel; (No Nitromethane or Propylene Oxide)

- DOT Rear Tire 190 MAX Size as printed on tire sidewall

- No Minimum Weight

- 2" Minimum Ride Height

- Self-Starting

- Lock-up Clutches OK; No slider clutches

- Air Shifters OK

- Data Acquisition OK

- Belly Pan with Absorbent Mat Required

- Wheelie Bars NOT Allowed

- Bodywork must resemble a "H-D FLH Bagger"

Exception; (Outlaw Bikes from AHDRA/AMRA) 

- Working Front and Rear Brakes, Min 8" Dia, X 1/8"

- "Illuminated" Red Visible Taillight for Visual Safety

- Crew Shirts MANDATORY for Crew Members past "Burn Out Box"

Pro Outlaw (PO)

These BIG cubic inch ALL MOTOR Baggers Have Bragging Rights! These High RPM, High Horsepower Baggers pack some Serious Punch pushing a maximum of 160 cubic inches of Harley Muscle at a 70" wheelbase! Look for BIG Money Grudge Bets trackside when these Monsters run.

- 45 Degree H-D V-Twin; Harley-Davidson FLH Baggers Maximum 160 cubic inch

- 70" Maximum Wheelbase (Front Axle Center to Rear Axle Center)

- ALL MOTOR; NO Power Adders Allowed!

- Open Fuel; (No Nitromethane or Propylene Oxide)

- DOT Rear Tire 190 MAX Size as printed on tire sidewall

- Minimum Weight 825lbs. Bike and Rider

With Safety Gear across the scales at the end of the run

- 2" Minimum Ride Height

- Self-Starting

- Lock-up Clutches OK; No slider clutches

- Air Shifters OK

- Data Acquisition OK

- Belly Pan with Absorbent Mat Required

- Wheelie Bars NOT Allowed

- Bodywork must resemble a "H-D FLH Bagger" w/Saddlebags

- H-D FLH Frame; Must use Stock Frame Cradle, Raised Backbone OK

- Frame downtube notches/modifications allowed for Exhaust Clearance

- Dzus Fasteners Allowed

- Kill Switch with Wrist Lanyard

- Working Front and Rear Brakes, Min 8" Dia, X 1/8"

- "Illuminated" Red Visible Taillight for Visual Safety

- Crew Shirts MANDATORY for Crew Members past "Burn Out Box"

Pro-Comp Outlaw (PC)

These "Power Adder" Big Twins have a Maximum of 143 cubic inches of Muscle at a 70" wheelbase. Will you see a Turbo, Nitrous, Blown, or Normally Aspirated bike at the line? They all come together for this HOT class that can create quite the platform for Grudge Racing! They make BIG Power, the Trick is Managing all that Horsepower and Torque!

- 45 Degree H-D V-Twin; Harley-Davidson FLH Baggers Maximum 143 cubic inc

- 70" Maximum Wheelbase (Front Axle Center to Rear Axle Center)

- Maximum (1) Power Adder; (Turbo, Nitrous, Blower, etc...)

- Open Fuel; (No Nitromethane or Propylene Oxide)

- DOT Rear Tire 190 MAX Size as printed on tire sidewall

(190 Maximum is for Shinko and Mickey Thompson Shootout Tires)  All other "Motorcycle" DOT tires Maximum 200 as printed on sidewall

- Minimum Weights;

Turbo/Supercharger/Blower 825 lbs., Nitrous 800 lbs., Normally Aspirated 775 lbs. Bike and Rider with Safety Gear across the scales at the beginning or the end of the run 

- 2" Minimum Ride Height

- Self-Starting

- Lock-up Clutches OK; No slider clutches

- Air Shifters OK

- Data Acquisition OK

- Belly Pan with Absorbent Mat Required

- Wheelie Bars NOT Allowed

- Bodywork must resemble a "H-D FLH Bagger" w/Saddlebags

- H-D FLH Frame; Must use Stock Frame Cradle, Raised Backbone OK

- Frame downtube notches/modifications allowed for Exhaust Clearance

- Dzus Fasteners Allowed

- Kill Switch with Wrist Lanyard

- Working Front and Rear Brakes, Min 8" Dia, X 1/8"

- "Illuminated" Red Visible Taillight for Visual Safety

- Crew Shirts MANDATORY for Crew Members past "Burn Out Box"

Super-Stock (SS)

Modeled in part by the highly successful and well know NHRA class of super stock. These Big Twins pack a Maximum of 131 cubic inches of Harley muscle. The ALL MOTOR, Foot Shifted racing is sure to be some of the Very BEST Harley Drag-Racing in the World! The Very Popular 131" engine is widely used and very easily built with relatively easy sourced parts. Harley-Davidson dealers even sell a 131" Bagger right off the showroom floor. The 66" wheelbase allows for better racing, harder launches,

- 45 degree H-D V-Twin; Harley-Davidson Big Twins Maximum 131 cubic inch

- Indian Challenger Model Bagger; 117 cubic inch Maximum

1

- 66" Maximum Wheelbase (Harley FLH and Indian Challenger)

(Front axle center to Rear axle center). Softail, Dyna, and FXR models Maximum 66" Wheelbase

- ALL MOTOR: NO Power Adders Allowed!

- FOOT SHIFTED ONLY: Engine Kill Allowed

- NO 2-STEP Allowed

- Open Fuel: (NO Nitromethane or Propylene Oxide)

- DOT Rear Tire 190 MAX Size as printed on tire sidewall

 (190 Maximum is for Shinko and Mickey Thompson Shootout Tires)  All other "Motorcycle" DOT tires Maximum 200 as printed on sidewall 

- DOT Front Motorcycle Tire

- Minimum Weight 825lbs. Bike and Rider

  With Safety Gear across the scales at the end of the run. (ALL Models must use this weight for parity)  Ex.) Heavier rider on a Softail can race and be competitivein this class.

- 2" Minimum Ride Height

- Self-Starting

- Lock-up Clutches OK; No slider clutches

(NO Multi-Stage, NO Gen 2 type, NO Engine Driven Clutches)

- Data Acquisition OK

- Belly Pan with Absorbent Mat HIGHLY RECCOMMENDED!

(For oil downs and less down times)

- Wheelie Bars NOT Allowed

- Bodywork must resemble a "H-D FLH Bagger" w/Saddlebags for Bagger

MUST use STOCK GAS TANK for the Bike

- Bodywork must resemble a "Challenger" w/Saddlebags for Indian

MUST use STOCK GAS TANK for the Bike

- NO Frame Modifications

- Kill Switch with Wrist Lanyard

- "Illuminated" Red Visible Taillight for Visual Safety

- Working Front and Rear Brakes, Min 8" Dia, X 1/8"

Top Eliminator (TE)

Calling ALL Gasoline or Methanol Powered Harleys to the line! Open to Baggers and Non-Baggers alike, the 9.30 Index (1/4 mile) offers some of the stiffest competition at the track! This class is filled with one common goal to be "Top Eliminator"! You will see a variety of Fast Harleys here all competing to be the Best! Expect Great Racing with BIG fields of bikes here!!!

- 9.30 Index (1/4 mile tracks)

- 5.95 Index (1/8 mile tracks)

- Open to ALL Gasoline/Methanol Powered Harley-Davidsons

- NO Nitromethane or Propylene Oxide

- Open Tires

- 2" Minimum Ride Height

- Belly Pan with Absorbent Mat HIGHLY RECCOMMENDED!

 (For oil downs and less down times) 

- Wheelie Bars ALLOWED

- Kill Switch with Wrist Lanyard

- "Illuminated" Red Visible Taillight for Visual Safety

- Working Front and Rear Brakes, Min 8" Dia, X 1/8"

Hot Rod Bagger (HR)

Designed for the Stock Wheelbase Harley Baggers. The class name is exactly what this is... Hot Rod Bagger! The Stock wheelbase, true DOT front and rear tires, pump gas, and foot shifted Baggers will be a challenge to get a hard launch and put all that power to the ground using a Maximum 131 cubic inches. The 131" engine is relatively easy to build with good parts availability. Harley-Davidson dealers also sell a motorcycle off the showroom floor with a 131" engine.

- Open to ALL Harley-Davidson FLH Baggers

- Maximum 131 cubic inch Engine (H-D)

- Stock wheelbase ONLY

- DOT Front and Rear tires only

(NO Shinko Hook Up, or Mickey Thompson Shootout type tires)

- Pump gas only, 94 octane Maximum

- No Power Adders, ALL Motor ONLY

- Wheelie Bars NOT Allowed

- True Foot Shift ONLY; No Air Shifters, Electric, or Electric Assisted

- MUST use Stock OEM sheet metal including Gas Tank for the bike

- Chains OK

- Rider Floorboards Mandatory

- (Pro Tree, Heads Up)

- Indian and Victory Model Baggers Allowed wth the same above rules

(Ex. Maximum 117" Engine)

GENERAL

1.) ALL engine rules (cubic inch) will be allowed a .030" allowance. This will be for oversizes, rebuilds, and clean-ups. This is the absolute maximum; no exceptions will be made.

2.) ALL weights can be changed ant any time for safety concerns as well as parity. The goal is tomake the racing as safe as possible while maintaining parity for heavier riders. We also want to make it as cost effective as we can for everyone. (weights are a starting point until we get some good data on times, combinations, classes, and overall parity). We don't want people to add so much weight that it becomes a safety issue, we also don't want it to be so lite that heavier riders are not

3.) Weights are a starting point until we get some good data on times, combinations, classes, and overall parity). We don't want people to add so much weight that it becomes a safety issue, we also don't want it to be so lite that heavier riders are not close to being competitive. The GOAL is to have the weights somewhere in the middle for the majority of the racers to make it as fair as possible.

4.) ALL classes run a .400 Pro-Tree

5.) Highly recommended front fork travel to have minimum 1" of travel for safety. Fork tie down starps allowed.

6.) ALL safety rules will be at the discretion and direction of the track and event promotor.

7.) ALL RULES are subject to change for the sole purpose of Safety and/or Parity. Our goal is to provide rules for Fair, Honest, Consistent, and Professional Harley-Davidson Drag-Racing. We want to keep the competition as close as we can for the majority of the racers out there, not just a select few.

8.) Just as the NHRA or NASCAR does, if we see a safety or parity issue effecting competition, rules will be changed to make improvements and correct the said issues. This is at the whole discretion of the IHDRA. The "IHDRA Advisory Board" will meet occasionally to discuss competition and safety as well as the overall health of our sport.

rules disclaimer

ALL RULES are subject to change for the sole purpose of Safety and/or Parity.  Our goal is to provide rules for Fair, Honest, Consistent, and Professional Harley-Davidson Drag-Racing.  We want to keep the competition as close as we can for the majority of the racers out there, not just a select few.  Just as the NHRA or NASCAR does, if we see a safety or parity issues effecting competition, rules will be changed and adjusted to make improvements and correct the said issues.  This is at the whole discretion of the IHDRA.  The "IHDRA Advisory Board" will meet occasionally to discuss competition and safety as well as the overall health of our sport.

Minimum weights will be looked at and adjustments will be made accordingly.  The goal is for overall parity for all the racers.  Weights are a starting point until we have the data to make such changes deemed necessary and fair.  We appreciate everyone's help and support with this and also welcome any input.

Copyright © 2022 International Harley Drag-Racing Association, Inc. - All Rights Reserved.

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