Rules by Class

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 Nothing allowed on the door side windows or windshields that would impair drivers vision.
Category, dial and competitor number are allowed.
One functional taillight must be visible to the starter until the driver turns on to the return road
and must be on when track personnel designate. Driver will be given one warning if not on when
designated. Racer will be disqualified from further competition for second violation. This rule
also applies to BYE runs.
No multiple drivers in one car/bike entered in the same class. A vehicle may NOT be entered in a
class with two drivers. 

Warm up rules: 

 It is mandatory that a driver be seated in the car in the normal driving position anytime the
engine is running.  The practice of trans-brake testing, converter stalls, line-loc testing, and/or
transmission warming is prohibited in all classes, in all areas of the event except in starting-line
approach areas beyond staging, exceptions are if vehicle is on jackstands,  coupler or drive-line
is removed from vehicle.. Non-compliance is grounds for disqualification or such other and/or
action as deemed appropriate by West End Thunder. 

 Stock style suspension, bolt on allowed. Mini tubs allowed, so long as stock frame rails are in
stock location.
Sportsman Tree
Trans-brake NOT allowed. (You are allowed to have it installed, but it cannot be used during the
actual race.)
Fiberglass hoods allowed, add-on body kits allowed, other fiberglass body panels allowed where
factory.
DOT approved tires only, maximum width of 2” past the furthest point out on the fender.
No electronics, single step high only rev limiter permitted. This means factory OEM equipped
low side rev limiters must be disabled.
Factory dash panel, aftermarket gauges allowed.
Full interior from back of front seats forward.
Multiple power adders allowed.
No open headers. Must have street legal muffling device. (Catalytic converters, glass pack, etc.)
Working factory glass
Secured battery, if relocated follow West End Thunder Tech rules
Fuel system must meet West End Thunder safety specs.

Multiple class entry allowed.
Must have current legal tag and insurance
2 wheel line lock allowed.
All racers must wear a helmet on our Dragstrip!
Delay boxes or other electronic devices not legal in these classes can not be in these cars during
competition. If these devices are found to be in vehicle during competition, that would include
the staging lanes before first round of elimination, you will be disqualified from event and asked
to leave the premises.
Hub caps and trim rings must be removed.
NO MOTORCYCLES IN THIS CLASS

 .500 Full Tree, Sportsman ladder
Foot Brake Only, Trans Brake Prohibited
Single Stage High side rev limiter only. LOW rev limiter is prohibited.
All racers must wear a helmet.
Seat belt mandatory in all cars, SFI 16.1 highly recommended. No matter what is used it must
be installed correctly.
Driveshaft loop required on all cars utilizing slicks.
Passenger DOT TIRES: DO NOT drive through water box
Hub caps & trim rings must be removed.
All cars must have functional neutral safety switch
Automatic Trans must be equipped with a spring-loaded positive reverse lockout
No tool boxes in trunk, all items in trunk must be securely fastened or removed.
1 pint minimum catch-can mandatory for coolant overflow.
Trucks must run with tailgates up or removed.
Two throttle return springs
Delay boxes or other electronic devices not legal in these classes can not be in these cars
during competition. If these devices are found to be in vehicle during competition, that would
include the staging lanes before first round of elimination, you will be disqualified from event and
asked to leave the premises. 

.500 Full Tree, Sportsman ladder
All drivers must wear a helmet meeting SNELL or SFI specifications –
Driveshaft loop required on all cars utilizing slicks.
Seal belt required. Three inch  belt meeting SFI Spec 16.1 highly recommended OR SFI 16.5 for
a two inch belt. A two inch or three inch Seat Belt meeting SFI 16.1 or 16.5 is mandatory in any
convertibles. No matter what is used it must be installed correctly.
Automatic Trans. must be equipped with a spring-loaded positive reverse lockout

All cars must have functional neutral safety switch NO EXCEPTIONS ALLOWED
Dual line-loc; Wire must consist of a single continuous wire from the switch to the line-loc(s)
solenoid(s)
Shifter; mechanical, hydraulic, pneumatic, electrical operated shifter permitted.
Rev limiter; two (2) step maximum permitted
Prohibited; throttle timers, drive wheel line-locks and any after market electronics
Delay boxes or other electronic devices not legal in these classes can not be in these cars during
competition. If these devices are found to be in vehicle during competition, that would include
the staging lanes before first round of elimination, you will be disqualified from event and asked
to leave the premises.
No towing of vehicles.

 .500 Full Tree, Sportsman ladder
Roll bar mandatory in all cars.
Full bodied car, unaltered from firewall rearward (wheel tubs permitted).
Seal belt required. Three inch  belt meeting SFI Spec 16.1 highly recommended OR SFI 16.5 for
a two inch belt(date labeled). A two inch or three inch Seat Belt meeting SFI 16.1 or 16.5 is
mandatory. No matter what is used it must be installed correctly.
Automatic Trans. must be equipped with a spring-loaded positive reverse lockout devise &
functional neutral safety switch mandatory.
Protective Clothing: NO EXCEPTIONS ALLOWED
SFI spec 3.2A/15, gloves & shoes or boots SFI spec 3.3/5 mandatory.
Drivers in open-bodied cars must wear gloves.
All drivers must wear a helmet meeting SNELL or SFI specifications – check Gen. Reg. 10:7
Helmets.
Seat Belts must be pulled tight. 

 Full-face helmet with shield meeting   M2015,  SA2015 , 2020 mandatory. No goggles
permitted.
Full all  leathers mandatory on Motorcycles.
Leather boots/shoes above the ankle and leather gloves mandatory on all motorcycles. Gloves
must be Kevlar-lined or equipped with slide buttons.
Motorcycles must break beams under own power.

Chain guard is required on all motorcycles.
For more information see NHRA 2024 rule book
Bikes may run with cars in S/Pro, Pro, Sportsman
Pants/jacket combo suits must use 360 degree metal zipper for attaching purposes.