Kings of Old School Derby




Download/Print Rules Register



SEPTEMBER 14th, 2019 – 4pm Start

HEMLOCK COUNTY FAIRGROUNDS,7370 Water St, Hemlock, NY 14466


Questions Call Mark Benjamin at 607-215-2149



The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events.  These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules.   NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND OR REGULATIONS.  They are intended as a guide for the conduct of the sport and are in no way a guarantee against injury or death to a participant, spectator, or official.

The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements.  NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS.  Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.

KOOS 2019 – Demolition Derby Classes, Payouts and Rules


Full Size Class

1st Place - $3,000

2nd Place - $1,000

3rd Place - $750

4th Place - $500

5th Place - $250

$50 Registration

Compact Class

1st Place - $1,500

2nd Place - $750

3rd Place - $500

4th Place - $250

5th Place - $100

$50 Registration

2 Man Extreme Class

1st Place - $1,000

2nd Place - $500

3rd Place - $250

$50 Registration

Truck Class (20 Car Limit)

1st Place - $750

2nd Place - $250

$50 Registration*

*Registration fee refunded when checking in on the  day of the event.

Stock Compact Class - $500

$25 Registration

80s & Newer Mod Class

(20 Car Limit)

1st Place - $1,000

2nd & 3rd Place* - TBD

*Based on car count

$100 Registration

Mini Junk Run - $500

$50 Registration

Blindfold Race - $250

$50 Registration


* Highest 80s & Newer in the Full Size Class - $1,000 - Added to payout if in Top 5 or paid out separately if outside of Top 5.

** If there is 60+ cars in a class there will be a B Main Feature for that Class - Payouts announced during drivers meeting.

Drivers must be at least 18 years of age. Driver must furnish his/her own car. All drivers and pit crew must sign a liability waiver before entering the pit area or track. All drivers must attend the driver’s meeting prior to race time. Any driver under the influence of alcohol or drugs will not be allowed to compete. No alcohol or drugs permitted in the pits.


  1. These rules are only for FULL SIZE and COMPACT classes. IF ANY VEHICLE IS A 4X4 OR AWD, ONE DRIVE SHAFT MUST BE DISABLED. No Jeeps, trucks, vans, Blazers, Suburban’s, utility vehicles, flower cars, limousines, SUV’s, or carry-alls allowed unless specified below for the Mini Junk Run.
  2. FULL SIZE CLASS: Any year foreign or domestic mass-produced 2 or 4 door sedan or station wagon is permitted. No Chrysler Imperials or Imperial frames 1973 or older. No open roof sedans, all sun roofs and/or t-top openings MUST be completely covered.
  3. COMPACT CLASS: Any year foreign or domestic mass-produced 2 or 4 door compact sedan or station wagon that is a front wheel drive k-member originally equipped car with a 4 or 6 cylinder engine is permitted. Additionally, any rear wheel drive car that came originally equipped with a 4 cylinder engine is permitted. Any questions, please call to clarify.
  4. All cars must have an identifying number or slogan (aka) displayed on each side and the roof. The numbers must be large enough to be seen from announcer’s booth.
  5. STOCK MEANS STOCK! These vehicles are to be considered stock unless specifically mentioned in these rules. No altering, welding, or manipulating parts unless specifically mentioned.
  6. Drivers must hit a live vehicle every 60 seconds.
  7. Drivers are required to wear a DOT approved helmet and safety glasses/goggles or face shield. Drivers must also wear full length pants and footwear that completely covers feet (no shorts and sandals for example).
  8. Safety is our first priority while on the grounds. There will be no tolerance of any unsafe acts. Conduct of a driver or crew member can disqualify the driver and car from the event.
  9. All decisions of the judges are final. Please call Mark Benjamin (607-215-2149) for any rule clarifications.



  1. ALL unnecessary glass, plastic, chrome moldings, mirrors, emblems, and flammable materials must be removed. No broken windows in doors.
  2. The car must be clean and free of loose debris in the driver’s compartment and the trunk.
  3. All airbags must be completely removed. Drain air conditioners and associated rubber hoses must be cut or removed prior to arrival at the track.
  4. All trailer/towing hitches must be removed.


Cages & Driver Protection:

  1. Cage bars must be sheet metal to sheet metal. Bars must be single bars, not stacked or doubled. All components of cage must be at least 4” from the center of the firewall AND floor at any point including transmission and driveshaft tunnels. The rear bar may not be any further back than where the kick panel meets the bench seat. Front bar may not contour the body. It must run straight across. All cage bars may be no bigger than 5”x5” except side bars. Side bars may be c-channel up to 8”. Side bars cannot go past the firewall or past the center of the rear doors. Side bars may not be INSIDE of doors. If side bars are not used, mounting plates not exceeding ¼” x 8”x12” may be used on the ends of the seat bar and dash bar. All bars MUST be inside the driver’s compartment except if a roof/halo bar is used. Roof bar must come off your rear seat bar or door bars (max. 5”x5” bars or 8” c-channel). Roof bar MUST go straight across. Roof bar may be bolted or welded to the roof only. Halo bars may not have any tip outs. Non-door post cars may weld 1 post to each side of the car, centered on the door seams, 4”x ½” max, with no more than 4” extending down the door or onto the roof.
  2. TWO windshield bars or chains may be attached from the roof to the cowl area on the front windshield area only to protect the driver. Maximum size 4” wide by ¼” thick bar OR 3/8” chain. May not extend more than 4” on roof and cowl. This may not be used as a strengthener or to keep a car from bending. No rear window bars allowed.


Fuel Tanks & Batteries:

  1. ORIGINAL FUEL TANKS MUST BE REMOVED COMPLETELY if located behind rear axle. Any unused fuel tanks must be removed.
  2. Metal fuel cells or approved marine style metal tanks are required when mounted inside of car. No gas cans or plastic tanks. Maximum capacity of fuel tank permitted is 10 gallons. Any type of liquid fuel may be used. Any fuel leaks will disqualify car from participating. Please use secure leak proof fittings and good hose clamps and make sure they are tight.
  3. Tanks must be located behind the front seat and must be securely fastened with chains, bolts, or both. ZIP SCREWS ARE NOT ACCEPTABLE. If you choose to use a frame for the purpose of mounting your gas tank, it may either be mounted to the rear seat bar OR bolted to the floor sheet metal (no combinations). All fuel tank frames/mounts may be no wider than 24” and must start a minimum of 4” away from vertical sheet metal on both used and fresh cars. All parts of a cage mounted fuel tank frame/mount must be at least 4” above floor that is below said fuel tank frame/mount. Additionally, fuel tank mounts may not be used as a technical advantage on a vehicle.
  4. All fuel tanks should be covered with a rubber mat, a metal cover, or both.
  5. You may run an electric fuel pump, but it must have a kill switch that is clearly marked.
  6. Two batteries per vehicle are allowed. Batteries must be mounted securely to the passenger side floorboard and covered with a rubber mat. We recommend metal frames bolted or welded to the floor or chains. Do not use zip screws or rubber straps.


Brakes & Steering:

  1. A working hydraulic brake system is required. You must exhibit the ability to stop. Anyone losing their brakes during an event will be disqualified.
  2. Steering may be altered from the steering box to the steering wheel.


Tires & Rims:

  1. No studded tires. No liquid or concrete filled tires. Any ply rating, foam filled, doubled, etc. will be allowed. All wheel weights must be removed, including on the inside of the wheels.
  2. Valve stem guards, variable lug centers, full weld in rim centers, and bead locks will be allowed.


Body & Frame:

  1. ALL BODY MOUNTS MUST REMAIN IN STOCK LOCATIONS. If OEM body mounts are used, the portion of the OEM mount between the frame and body cannot be altered including the metal cone inside of rubber mount. If you chose to replace OEM body mounts, the OEM mounts may only be substituted with an actual rubber hockey puck (no homemade plastic or metal spacers allowed). They must be positioned in the original location and with the same intent as the factory installs them, but bolts may travel through the top of floor. BODY MOUNT BOLTS MAY BE REPLACED WITH BOLTS NO LARGER THAN 5/8”x8" LONG. A washer, no larger than 4”x4”x¼” may be placed on the top (inside car where bolt sticks through floor) and bottom of body mount bolts inside of frame. No welding washers to car body or frame. Do not add or relocate any body mounts and/or bolts. K-member and subframe mounts will be considered body mounts. Maximum size of k-member or subframe bolts permitted is the OEM size for that vehicle. Compact cars with subframes and full size subframe and pinchframe cars may replace OEM mounts with hockey pucks. Please call if you still have any questions regarding the body mount rules.
  2. Notching and pre-bending will be allowed. Do not weld notches back together. Wedging and lowering of trunk area will not be allowed. Trunk lids may be cut or bent to tuck. Quarter panels and tail light panel must remain vertical. Fenderwell sheet metal may be cut or rolled for clearance purposes and may be bolted back together in 5 spots using 3/8” bolts on each opening.
  3. Front frame may NOT be shortened past the front of the factory core support location and core support MUST be bolted in the factory location.
  4. Do not paint or undercoat frames inside or out. Do not grind or buff frames. No frame shaping/manipulation in front of rear humps is allowed. No welding of frame seams allowed unless cleared with Mark Benjamin.
  5. Any frame/unibody/rocker panel/body panel etc. may be drilled to scope inside if deemed necessary for inspection.
  6. All rear inner decking panels must be removed from station wagons.
  7. Patching and rust repair to body and/or frame will be allowed only if cleared in advance by Mark Benjamin (607-215-2149), & may require pictures before and after any repairs.


Hoods, Trunks & Doors:

  1. Hood must have at least a 10” x 10” hole near the center for fire personnel access. Hood/trunk cutout bolts may be used (max. 12 per hood/trunk, no larger than 3/8” bolts, & bolts must only be placed around perimeter of hole). If you are using engine driven plastic fan or clutch type fan, hood must cover fan and extend 10” past fan blades. Hood may be secured in 8 spots with chain (3/8” max.), wire, and/or bolted (max. size 3/8”) through angle iron (max size 2”x2”x4” x¼”). Chain or wire may wrap around the bumpers. All hoods MUST open on stock hinges or be removed completely for inspection regardless of cutout size. Factory hood latches must be removed.
  2. EACH door & trunk lid/tailgate may be secured in a total of 8 places of your choice on each panel by welding metal plates (4”x4”x ¼ ” max.), chain (3/8” max.), #9 wire, and/or banding. ONLY THE DRIVER’S DOOR MAY BE FULLY SEAM WELDED OR SKINNED WITH 1/8” MAX STEEL (MAY NOT OVERLAP DOOR SKIN PAST DOOR SEAM) for safety purposes (4”x ¼” straps max.). No inside seams may be welded. If trunk lid cannot be fully opened for inspection, a 10”x10” inspection hole MUST be cut in trunk lid.
  3. All body seams must be visible for inspection whether it is a pre-ran car that is bent or a fresh car that is prebent.
  4. Unlimited 9 wire is allowed to be used to prepare car for feature after car qualifies in heat. If at any time the 9 wire used is deemed unsafe by our track officials, we reserve the right to shut the vehicle down for safety measures. Decisions of the judges are final.



  1. Any year OEM car bumper is permitted. You may cut or bend bumper ends for clearance. Excessive size or number of bolts and/or washers will have to be removed completely (please call with questions prior to show). You may weld inner and outer bumper seams together. Please call head official if any filler is needed to mount bumpers to mounts or frame (any exceptions must be approved prior to the show).
  2. Loaded bumpers will be allowed, all work MUST be done on the inside of a factory bumper. Bumpers MUST be complete front and back with stock appearance and OEM components. No aftermarket non OEM factory bumpers will be allowed.
  3. Brackets must be used in their STOCK manor and may not be altered in any way with the exception of a 5”x 6”x ¼” plate welded to the frame AND bumper (can NOT be welded any further than 6” from the end of the frame). Bumper, bumper shock and bumper brackets may only be welded to the first 6” of frame. Any part of bumper, brackets or shock welded on past the 6” will have to be COMPLETELY removed. If a non-factory equipped bumper bracket or bumper shock is used, no welding and/or bolting will be allowed after the first 6” of the frame if brackets and/or shocks are NOT in the factory location. No additional metal may be added unless cleared by Mark Benjamin. You may weld bumpers solid to shocks, brackets, and frame. We don't want bumpers falling off. No homemade bumper shocks will be allowed. Bumper shocks must remain in one piece and be attached to the bumper.
  4. Bumpers MAY be chained (3/8” max) or wired to car body in four places. If chains or wire pass through hood or trunk, they will be counted as tie down spots. No welding bumpers to bodies (only exceptions must be cleared by the head judge prior to any welding).
  5. Any factory non-bumper shock equipped vehicles may add 2 unaltered OEM style bumper shocks to mount bumper with the 5”x 6”x ¼” plate welded to the frame AND bumper (can NOT be welded any further than 6” from the end of the frame) . Bumper, bumper shock and bumper brackets may only be welded to the first 6” of frame. Any part of bumper, brackets or shock welded and/or bolted on past the first 6” of the frame will have to be COMPLETELY removed if NOT in the factory location.


Engines, Transmissions & Drive shafts:

  1. Engine & transmission swapping between manufacturers is allowed. Do not strengthen frames or crossmembers with mounts. Motor mounts/cradle may be bolted or welded to crossmember ONLY. One engine chain per side may be used. The chain may be bolted to a factory hole in the frame OR wrapped once around the frame only (not welded), OR one link on each side may be welded directly to engine cross member or k-frame only, if bolting it can NOT act as a pin through the frame. A factory transmission crossmember must be used but may be altered in center for transmission mounting purposes only (4” wide x 12” long x ¼” thick max).
  2. Any car with a factory aluminum cradle and rack & pinion steering can NOT swap cradles and factory rack & pinion steering must be used. If lower engine cradle is used it MUST be mounted to the aluminum cradle ONLY.
  3. Aftermarket shifters, gas pedals, ignitions switches, drive shafts (slider), suspension shocks, transmission coolers, electric fans, lower engine cradles, pulley protector, and throttle linkages are allowed. Pulley Protector may not be used in any way to strengthen the car and cannot be used as a motor mount or connected in anyway other than to the engine cradle.
  4. Distributor protectors and transmission braces are NOT allowed. Aftermarket transmission bellhousings and tailshaft housings are NOT allowed.
  5. Water only in cooling system. Please drain antifreeze prior to arrival at the track. No solid mounted metal engine fans allowed. All cooling fans must be under hood. No external radiator guards/protectors. A piece of expanded metal or screen may be used between radiator and cooling fan under hood.
  6. Exhaust may exit under the car or straight up through the hood. Some type of air cleaner must be used. No open carbs will be allowed.
  7. All holes in firewall MUST be covered with tin, heavy rubber, or a fire resistant material.


Suspension & Rears:

  1. Cars may use any rear-end provided it is from a car (5 lug or less). Aftermarket axle shafts are permitted. No added braces or axle-savers allowed on rear-end housings. Any remnants of prior rear end braces must be COMPLETELY removed.
  2. Front suspension may be raised or locked by using torsion adjustments, spring spacers, a metal rod (1” diameter max.) from the top of LOWER control arm to BOTTOM of vehicle’s frame (no chains) OR front shocks may be replaced with 1” threaded rod in the stock shock location no combinations allowed. If you use the 1” thread rod option nothing can be welded this includes any washers and/or nuts. If rod option is used, rod may not overlap side of frame. Front control arms and spindles may be interchanged between manufacturers provided no extra metal or welding is added to frame of vehicle. Ball joints must be OEM or equivalent.
  3. Rear suspension may be locked or chained. One loop of chain (3/8” max) per side in rear is allowed. Chain must extend straight up and down from rear-end housing to package tray area OR around frame rail. Chain may not be welded to frame. Factory leafed vehicles must have factory spring packs with correct step-downs (minimum 2” step). No more than two replacement clamps will be allowed on each spring pack. They may not exceed ¼” x 2” x 5”. A factory trailing arm may be shortened to accommodate pinion angle with a maximum of 2” overlap, no additional material may be added. This includes Watts link style cars. ZTR brackets may be used, tops MUST be bolted to the package tray ONLY, bottoms can be welded, cannot be used to stiffen any part of the frame.
  4. Rear shocks may be clamped or stuffed with rags. OR may be sleeved with pipe but pipe may not be welded to frame of vehicle. OEM shocks may be replaced with aftermarket shock replacements up to 1.5”x1.5” maximum square or 1.5” diameter if round. All shocks must be mounted in OEM locations. NO TRUCK SUSPENSION PARTS ON CARS.


Special Classes all rules apply in addition to the following:

2 Man Extreme Class

  1. Driver faces forwarded, passenger faces backwards.
  2. Driver only steers.
  3. Passenger operates gas, brake and shifter.


Mini Junk Run

  1. Mini SUV’s, Minivans, Mini Pickup Trucks ONLY.


Stock Compact Class

  1. Car MUST be a stock 4/6 cylinder car only.
  2. Battery can be relocated to passenger side floorboard, securely fastened and covered with a rubber mat.
  3. Bar behind seat no larger than 4” with 6” plates on the ends.
  4. Gas tanks may be relocated and securely fastened in the back seat of the car, no plastic tanks and cannot leak. If running original tank it must be wrapped with 2 straps - ratchet strap, 9 wire or plumbers strapping.
  5. You may run an electric fuel pump, but it must have a kill switch that is clearly marked.
  6. Doors, trunk and hood can only be secured using 9 wire or seat belt material, 2 spots per seam with no more than 2 wraps.
  7. No stacks/headers through the hood, no aftermarket accessories (shifters, pedals, coolers, etc).
  8. 10”x10” access hole in the hood is required.
  9. Stock DOT approved tires only.
  10. All rubber bumper covers must be removed.


Full Size Mod Class

  1. Any year car, no imperials older then 1974.
  2. Any full engine cradle is allowed.
  3. Any full transmission brace with steel tail and bell allowed.
  4. Any rearend with 2”x2” trailing arms allowed.
  5. Factory crossmember can be replaced with 2”x2” square tubing to accommodate transmission relocation.
  6. Aftermarket tierods, ball joints and centerlink allowed.
  7. Gas tank protector with no gap to package tray 24” wide allowed.
  8. ¾” max size body mount bolts with 5”x5”x1/4”, body mount spacer can be rubber hockey puck OR steel 1” spacer.
  9. Doors and trunk can be welded 3” on 3” off.
  10. Core support can have 8” spacer 2”x2”x1/4” max.
  11. Frame seam welding allowed from the A-Arms forward, top seam ONLY with single bead of weld.
  12. Expanded metal on both sides of the radiator allowed.
  13. Tilting (one spot per side only) can be hot or cold tilted.
  14. Trunks can be canoed, tucked or creased. Rear quarter panels MUST remain vertical.
  15. Upper a arms may be welded down by folding down the front side and rear side of a arm and welding to frame with a 2”x 6”x1/4” piece of metal on front and rear side of A Arms. The strapping to weld down A Arms cannot extend farther than 2” from A Arm in any place. Lower A-Arms may not be welded. You can change out the new style A-arms for old style ones. Cars do not have to bounce solid suspension is allowed.


Full Size Truck Class

  1. Any full engine cradle is allowed. Any full transmission brace with steel tail and bell allowed.
  2. Rearends may be swapped to 8 lugs. Rearend bracing is allowed.
  3. Factory crossmember can be replaced with 2”x2” square tubing to accommodate transmission relocation.
  4. Aftermarket tierods, ball joints and centerlink allowed.
  5. Any type factory bumper may be used and it may be loaded. A homemade bumper may be used providing it’s no more than 6” wide X 6” tall and can have a 4” point carried across 32 inches centered on the bumper. The ends of the bumper MUST BE SQUARE no jagged edges.
  6. Trailer hitches must be removed.
  7. NO BUMPERS SHOCKS ALLOWED !!! you will be allowed FOUR TOTAL (TWO per frame rail ONE per side of the frame) 3/8” X 15” plate.
  8. No loaded bumpers on the rear, no homemade bumpers on the rear!
  9. No body or suspension lifts allowed.
  10. BODY MUST BE FACTORY STOCK HEIGHT. Suspension may be stiff.
  11. Frame must be stock NO reinforcing anywhere other then what is specified in the rules. Rust hole may be patched with similar thickness & like material. Call and be prepared to show pictures first. No extra plating in anyway.
  12. Doors may be welded or bolted.
  13. Hoods must be in place & operable must have 12” X 12” hole cut in center. Wired in six locations, two may go to bumper or bolted in four locations. No bigger than 5/8” bolts. Core support BOLTS only 1”.
  14. Bed and body mounts may be changed. No bigger than 5/8” bolts. NO additional mounts, bolts or welding.
  15. Tailgate CANNOT be welded to frame, bed only.
  16. Bedsides may be smashed over AFTER the wheel wells ONLY. They may be bolt sheet metal to sheet metal with ONE 5/8” bolt and a 4” X 4” washer only if your bed rails are smashed down then you must have a 4” X 4” inspection hole in the sheet metal.
  17. Tailgates may be welded solid to bed sides ONLY not the floor pan, if you choose to leave bed sides vertical you can weld tailgate to bumper across the OUTSIDE bottom seam.
  18. NO other reinforcing will be permitted.
  19. Driver’s compartment must have at least 4-point cage - one behind seat, one across dash & one along each door with a halo. BOLT IT/WELD IT - MAKE IT SAFE.
  20. Gas tank protector highly recommended, protector may attach to frame but may NOT extend any further than 24” from front of bed.
  21. Gas tank protector may come off back bar.
  22. Roll over bar MANDATORY.
  23. Must have two windshield bars.





Download/Print Rules Register