Extreme 4 /
Stock unless otherwise stated.
1. 1980 or newer front wheel drive, four cylinder
passenger car only. No all wheel drive or all wheel
steering allowed. No station wagons, vans or pick up
2. Body must maintain original dimensions, standard
as from the manufacturer. Original body material may
be patched or replaced with sheet metal if original
body lines remain.
3. Floor pan, trunk pan, front and rear interior
wheel wells must remain stock and in stock location.
4. Interior trim must be removed. (Carpet, head
liner, side panels, etc.) Any material which is
flammable must be removed.
5. Hood must be held shut with at least two hood
6. Must add at least three crash bars in front of
driver. All glass must be removed from car.
7. Fabricated dash board ok. Sheet metal interior
ok. MUST HAVE MINIMUM OF TWO ACCESS HOLES FOR
8. Must have rear firewall, inner fenders and wheel
wells must remain stock and unaltered. Must have
full floor pan, can be replaced or patched to repair
rust or damage.
9. Must have a well built four-point roll cage, with
a minimum of three door bars on driver side with
vertical bracing from top to bottom. Cage must be
securely attached to the frame in a safe and secure
manner. Front and rear bars are recommended. Track
has final say in anything safety related. You must
have a racing helmet; fire suit and they must be in
date. Car must have a fire extinguisher and a master
10. Engine - No Variable valve timing engines. 2.2
max engine size. Stock unaltered four-cylinder
engine only. No high-performance engines or parts.
No turbo chargers or nitrous. Engine must remain
absolutely stock. (no excessive shaving of the heads
or block) No aftermarket or reground factory
camshafts or gears. No racing valves or valve
springs- no performance valve jobs- no shims under
valve springs. Your engine must remain unaltered and
within factory specs with the exception that it may
be bored up to 60 over with stock replacement
pistons and rods. No high-performance pistons or
rods. Must be for the make and model of your engine.
No lightening of any engine parts. No aftermarket
bolts or head studs. Stock fuel system only. Fuel
injectors for your make and model only. Intake and
throttle body must be for the correct make and model
of your engine and unaltered. Factory headers will
be allowed, no aftermarket headers. Factory headers
or manifolds must be unaltered. No racing or
performance mufflers. Must have factory steel
flywheel and cannot be lightened. Must have stock
replacement clutch, no racing clutch or pressure
plates. Transmission can be welded/locked. No
lightening or altering gears. Must have all working
gears, ignition system must be stock. No
aftermarket, high-performance coils, plug wires etc.
Computer must remain stock, no chipped or tuned
11. Weight Rules - Weight of your car will be
determined by factory horsepower rating. Example 140
horsepower or below 2100 lbs, 140 horsepower or
above 2200 lbs. There will be a weight break of 25
lbs for a full containment seat or Hans device. 25
lbs for one only not both.
Any 2.2 engines that are bored must add an
additional 100 lb weight penalty. Weight must be
posted on the hood of your car on both sides.
12. Suspension - Only stock suspension parts
allowed. Drilling or cutting of the suspension parts
for camber is ok. Safety hubs ok. Car may be lowered
with stock parts only. No adjustable coil overs.
Stock shock location only. Cannot move where
shocks/struts mount to the car.
13. Brakes - Must have functional OEM front brakes.
Rear brakes may be removed. No bias adjusters or
shut offs allowed. No traction control of any kind
will be allowed.
14. Wheels And Tires - All wheels must be the same
size and offset. No racing wheels- no bead locks-
tubes allowed in tires. Tires must have DOT stamp
and be legal for highway use. No performance tires,
no softening of tires. Track reserves the right to
disallow any tire from competition.
15. After three wins driver must start next main
event from the rear.
16. Claim Rules - Computer buy rule - $150.00 /
Engine buy rule - $1000
Top five only
allowed to buy; Fifth place has first choice.
Refusing to sell will result in a one-week
17. Protest - Flywheel and clutch (Visual) $50.00.
Top end $300.00 Includes - Head, cams, intake,
throttle body, and exhaust. Track retains $100.00.
Complete engine $500.00 with track retaining
$100.00. Whole engine will be removed and inspected.
Track has final say in all protests. All Extreme 4
drivers, car owners, and crews will conduct
themselves in a respectful manner. Any after race
altercations between drivers, car owners, or crews
will result in disqualification, second offense will
result in a one month suspension.