Carolina Thunder Motorcycle Drag Racing
B-Fuel Pro Dragster

The 50’s, 60’s, 70’s and 80’s brought about a massive change to the Motorcycle Drag Racing World. When mechanics and riders modified their engines, frames, swing arms and added wheelie bars. Some event adding two or three engines to a custom made racing frame and their creations were not only fast but were crowd drawers at the Drag Strips.     Racers Want Simple Rules — The Rules For B-Fuel Pro Dragster we believe — Are Simple and are Posted Below.

The B-Fuel Pro Dragster is a Purpose-built, Carburetor-Nitro Fuel, High Gear Only, Harley-Davidson® Pushrod 45 V-Twin Engine up to 122 C.I.
*  Stock or Stock Type Cases,
*  Knife & Fork Rods with Bearings.
*  Any Stroke & Crankshaft – has to fit Stock or Stock Type Cases,
*  Carburetor Only
*  Belt Drive or Chain
*  High Gear Only.
*  11 in Tire Max,
** Engine Restraint / Straps  (safety)
These Nitro Fuel Bikes Are Built Specifically For All Out Drag Racing.  We Welcome All B-Fuel Bikes at All CTMDR Races.

Designation: “ BF” followed by Bike Number.

Racing Format:
400 Pro Tree – All Run Field ,– Must Pass Tech & Safety Inspection.

B-Fuel Pro Dragster Qualifying Procedure
All entries in the B-Fuel Pro Dragster Class will run round one and two of qualifying on a random pairing basis.  After Round Two an Elimination Ladder will be produced based on riders reaction times from round two.

Buybacks:    1st Round Buybacks Only

Points / Entry Fees / Payouts:
Rider & Bike is included in the Entry Fee.  Entry Fee / Payout go to:  CTMDR 2019 Entry Fee – Payouts    Points earned in each Race by CTMDR Members go to:  CTMDR Membership Form    **** Trophies and Payout to the – Winner – Runner Up – Semi.

The B-Fuel Pro Dragster Class will be a Points Class at all CTMDR Events  including The ALL Star Race.   The B-Fuel Pro Dragster Class is a Points-Earning Class and at the end of the season a Champion will be crowned. Riders it is your responsibility to monitor and make sure points awarded to you are correct after every event.    All requests for points adjustments must be made in writing to within thirty days of the points posting for the event in question.   Give us an accurate description on your concerns.

Please understand CTMDR will strive to keep the points tabulations for all classes accurate and correct and we hope by you monitoring your own points earnings, any errors we have made will be corrected quickly. *** After 30 days no adjustments will be considered.

Common Sense Rules Breakdown and Specifications

Engine:   Must keep design features of Harley-Davidson Engines (Pushrod, 45 V-Twin). Carburetor engine with 122 ci maximum.    Pushrod aftermarket heads are legal including 4 valve heads.    Crankcase and all tanks containing fluids must have vent tubes routed to catch can or have a non-spill breather system on motorcycle.   Must have Belly Pan Scatter Shield under engine.   Cylinder Hear Restraint Mandatory.  (Safety)

Fuel:   Nitro methane and/or methyl alcohol only.   No propylene oxide or nitrous allowed.   Fuel Shutoff Valve is required.   Accelerator Pumps must be gravity fed and actuated by the throttle using linkage or cable.

Chain Guard:   Chain or Belt Guards are mandatory.  (safety)

Transmission:   Single Speed Drive Train Only.

Clutch:    Any centrifugal and/or RPM controlled clutch may be used.   The clutch must be self-contained.   No fluid or electrical inputs may control the operation of the clutch.   Clutch must have strong protective covering. NO Clutch Cannons.   They have never been legal on carburetor bikes.

Brakes:   Hydraulic type, Front & Rear, mandatory and must be in good working order.   Minimum brake rotor size should be  9-inch diameter, 1/8-inch thickness for rotors.   Brake Rotors may be drilled only if minimum diameter and thickness are maintained.   We want you to stop.

Controls:   Handlebar controls must be located in safe, workable position.   Foot pegs and foot controls must be located in safe, workable position and must be mounted in a safe, craftsman-like manner.   Mandatory fuel shutoff must be accessible by rider from riding position.   A secondary shut-off device should be  attached to rider (in the event of premature exit from motorcycle) is recommended but not mandatory.   Throttle assembly your decision.

Suspension:   Front suspension minimum travel of 2 inches.   Fork stops required; must limit the turning arc to 28 degrees.   Steering dampeners are mandatory.   Rear suspension not necessary.

Frame:   Any type permitted.   All frames should be tig welded and main rails must have a minimum diameter of one inch.

Ground Clearance:   Minimum of 2 inches with rider on motorcycle, includes exhaust and kickstand.

Tires:   Must be specified for racing use by manufacturer.    Rear tire tread width is limited to 11 inches and must fit under the fender.

Wheelie Bars:  Wheelie bars are required.   Should be securely cross-braced.

Wheels:    Your Choice as long as safe.   NO Bicycle Wheels on Front.

Body:    Body parts must be securely mounted and safety.

Rear Fender:   Rear Fender must cover width of tire and extend past the rear axle.

Fairing:   Are legal.    Must be mounted solidly mounted.

Seat:   Seat, tail section and rear fender may be incorporated into one unit and must include a step to prevent rider from sliding backward.

Ignition:   Any non-programmable OR inductive discharge ignition systems are allowed.    Hybrid inductive ignitions are not allowed.

Charging System:   Not necessary.

Starting System:   Should be electric external starter.   Battery top covers are required.   No rollers.   No push starts.    Jack Stands are mandatory for starting.     No dry hops in pits.

Control Switches:   Must be mounted and constructed in a safe, craftsman-like manner.     Must have an emergency kill switch for safety.

Computers:    Only data gathering computers are allowed.

Lights:    Rear light / brake light —  should work for safety.

Rider Credentials:    Valid Competitor License from any Snatching Body. Proper License Pass Tech & Run The Number

Helmet:   Full Coverage Helmets Only!    Must be Snell-2000 or ECE 22.05 approved. Eye protection required.

Protective Clothing:   Full finger leather gloves with knuckle armor and palm reinforcement, one piece or full circumference zippered leather suit with knee, elbow and shoulder armor or reinforcement, spine/back protector and above the ankle leather boots with toe area reinforcement are required.

Chest Protection:   Chest protectors are recommended.   “Ballistic chest protection” (meaning bullet proof) is a device worn to protect the rider’s chest from puncture of flying debris in case of catastrophic engine explosion.

Tech:   All motorcycles must pass tech in before practice. Motorcycle, rider and his protective gear must be present at tech area.   Tech official will have final say on any unclear rule or equipment.


Sonny Productions LLC
280 Haynes Rd
Summerfield NC 27358
Sonny / Office 336-643-1367    Cell # 336-580-1638
Email –