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      • 2024 Season Opener
      • New Bloomfield Figure 8 5/11/24
      • 2024 Fulton Demolition Derby and Figure 8
      • 2024 Miller County Fair Bump and Run
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      • 2024 California Rural Firefighter Figure 8
      • 2024 Turkey Festival Derby and Figure 8
      • 2024 Apple Bash
      • 2024 Championship Night (Fulton)
    • 2023 Results >
      • Figure 8- Russellville (4/15/23)
      • Figure 8- New Bloomfield (5/13)
      • Derby/Figure 8 - Eldon June Demolition Derby and Figure 8
      • Derby- Richland (6-24-23)
      • Figure 8- Miller County Fair (7/7/22)
      • Derby- Miller County Fair (7/8/23)
      • Figure 8- Morgan County Fair (7/15/23)
      • Derby- Henry County Fair (7/15/23)
      • BNR/SxS/Hobo Figure 8- Eldon 7.6.23
      • figure 8- Montgomery County Fair (7/19/23)
      • figure 8- Cole County Fair (8.5.23)
      • figure 8- Moniteau County Fair (8/11/23)
      • Figure 8- Race for 28 (8/26/2023)
      • derby- 2023 Mokane World's Fair
      • Figure 8 and Derby - Sedalia (9/9/2023)
      • figure 8- California Firefighter Crash and Bash 9.23.23
      • Derby/Figure 8 - Eldon Turkey Festival 9.30.2023
      • Derby/Figure 8 - Versailles Apple Bash
      • 2023 Lucky 7's Championship Night (10/14/23)
    • 2022 Results >
      • Figure 8 - Russellville Season Opener (4-23)
      • Figure 8- New Bloomfield (5-14)
      • Double Dipper - Eldon (6-4)
      • Russellville FFA Scramble and Run 6-18-22
      • Derby- Richland Tri-County Fair (6-25)
      • Miller County Fair Bump and Jam
      • Figure 8- Miller County Fair (7/8/22)
      • Figure 8- Morgan County Fair (7/9)
      • Derby- Miller County Fair (7/9)
      • Figure 8- Lincoln County Fair
      • Figure 8- Cole County Fair (7/30)
      • Figure 8- Moniteau County Fair (8/5)
      • Figure 8- Race for 28 (8/13)
      • Derby- Mokane World's Fair (9/2)
      • Figure 8 and Hobo- Sedalia (9/10)
      • Figure 8- California Firefighter Bash (9/17)
      • Double Dipper - Turkey Festival (9/25)
      • Double Dipper - Apple Bash (10/1/22)
      • figure 8- Lucky 7's Championship Night (10/15)
    • 2021 Results >
      • Lucky 7's Season Opener (4/17)
      • 2021 Russellville FFA Scramble
      • 2021 Miller County Fair
      • 2021 Miller County Fair Derby
      • 2021 Morgan County Fair Figure 8
      • 2021 Lincoln County Fair Figure 8
      • 2021 Moniteau County Fair Figure 8 Scramble
      • 2021 Russellville Double Points
      • 2021 New Bloomfield Figure 8
      • 2021 Mokane World's Fair Demolition Derby
      • 2021 Donnie Hunter Memorial
      • 2021 Ham And Turkey Fest Figure 8
      • 2021 Lucky 7's Figure 8 Championship
      • 2021 Lucky 7's Demolition Derby Championship
    • 2020 Results >
      • Russellville Season Opener Results
      • Miller County Fair Results
      • Cole County Fair Results
      • Russellville Double Points
      • Sedalia - Donnie Hunter Memorial
      • Eldon- Turkey Festival
      • 2021 Turkey Festival
      • 2021 Apple Bash
      • Lucky 7's Championship
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2025 BoneStock Derby rules

THIS IS NOT A SET OF RULES BUT A SET OF GUIDELINES OF HOW TO BUILD YOUR CAR. IF IT DOESN’T SAY YOU CAN SPECIFICALLY DO SOMETHING THEN YOU CANT.


General Driver Rules & Expectations:
1. Drivers must be at least 16 years old. Under 18 years old must have a parental release.
2. Drivers may have one rider if so desired. This rider must be registered as a rider prior to start of events and also pay an additional entry fee. Riders must also abide by all event regulations. If you register as a driver you must remain the driver throughout the event. Only the driver will be eligible for any money awarded.
3. Drivers are responsible for passengers’ actions while on the track,
4. Drivers may use as many pit personals as desired.
5. Drivers, riders, and crew members must attend pit meetings. Any controversies will be taken up at the drivers meeting.
6. Drivers and all people entering pit area must sign Entry Form and Release of Liability Form prior to entering pit area. Anyone that will be in the pits will have to pay entry fee (driver, rider, crew and anyone staying in the pits). NO EXCEPTIONS!!!!
7. Authorized vehicles only will be allowed in the pit area. No personal vehicles are allowed.
8. A maximum of 5 mph must be always obeyed in the pit area. NO hot rodding in the pit area. This is the fastest way to be disqualified.
9. After entering pit area, all cars are to be inspected in the tech area as soon as possible. ALL cars must be teched and registered 30 minutes before show time.
If you don’t pass inspection, you will be allowed to make the necessary repairs and be re-inspected within 30 minutes prior to the start of the first heat.
***IF CAR DOES NOT PASS INSPECTION OR DRIVER IS UNWILLING TO CHANGE CAR TO PASS INSPECTION ABSOLUTELY NO REFUNDS!!******

Car Building Rules:

DO NOT paint anywhere on suspension or frame, if you do we will not even inspect your car.

1. May be any car with the following exceptions
-No 1970 or older Lincolns
-No 1973 or older Chrysler Imperials or Imperial sub frames
-No 4x4, ambulance, hearses, trucks, Limos, etc.

2. Any drive train can be used in any car, must be in stock location. Slider driveshafts are ok. Pinion brakes are allowed.

2. Remove all glass, mirrors, plastic, outside body chrome & turn signals. Vehicles must be swept clean of all debris. Also, must remove ALL carpet, dash, headliner, rear seats, and any other flammable materials. Must remove Hitches and braces.

3.ZERO frame shaping, forming or folding. Frame notching is okay, but cannot weld. No sedagons, fresh or pre run. You can tuck 50% of trunk lid only. Creasing is okay, but do not dish trunk.

Any tires are fine. Only valve stem protectors allowed on wheels.

BUMPERS
1. Bumpers may be loaded. May use a Aftermarket replica bumper or a bumper approved by Ben.
2. You may hard nose your bumper right to the frame. Wagons must leave bumper in factory position in the rear.
3. Bumper Shocks- May use one of the following options:
  • If using factory shocks and brackets they may not extend past 6 inches from your bumper. They may be welded solid to frame. All brackets and shocks must touch the bumper.
  • use (2) 6 Inch 2x2 square tube mounted on frame, 1 per rail.
  • use (2) 4x6x 3/8 bumper straps on one side of the frame only. 1 per frame rail, 2 straps total.
Square tubing and bumpers straps must touch bumper and may not exceed 6” from your bumper. Can only weld 6 inches back from bumper to the frame. This covers shocks / bumper straps. May cap the frame to mount your bumper.

5. **NO WELDING or Bolting Further than 6” FROM BACK OF BUMPERS FRONT OR REAR** If you have questions about this, please call.
6. Bumpers can be no higher than 21’’ from the ground to the bottom of the bumper OR lower than 14” from the ground to the bottom of the bumper.

REAR END
1. Any 5 lug rear end allowed. No Bracing allowed.
2. Slider drive shaft is permitted.
3 No leaf spring conversions
4. You may use 3/8 chain or wire from your axle around the frame / hump. ONE PLACE PER SIDE. NO WELDING.

Drive Train
1.ANY drivetrain allowed with the following criteria. Use motor of choice, motor must be in stock location. Distributor Protectors are NOT allowed. Mid Plates are NOT allowed. Lower Cradles are allowed but must attached to a factory engine mount, with rubber bushing attached to frame. The factory engine mounts are the only way of tying the motor down.
2.NO Distributor cap protectors or Full cradles!! YOU are allowed a front lower. You may run the front plate for the engine cradle but cannot extend back at all. Pulley Protector allowed, but must cut sway bar. This is to try and save motor mounts do not abuse this rule. Header Protectors are allowed, Piece of 4X4 ¼” welded around header ONLY and cannot connect to anything. No other protectors allowed on motor or in motor area No tranny protectors, stock mounting only, stock crossmembers only that came with the car or 2x2x1/4” angle iron.

May run a steel or ultra bell. If running them, they cannot touch any sheet metal.

FRAMES/SUSPENSION
1. ** No cold bending or tilting frames on fresh cars. Can Cold bend to pull car back down, do not cut tabs, do not abuse this rule.
2. Store bought twist in spring spacers are allowed but no metal allowed above top of spring, may kick or change coil springs. Must be factory passenger car springs only.
3. Tie rods must be oem with factory ends. May weld the factory sleeves. No visible added metal.
4. Factory spindle swaps are ok- Ford to Chevy, etc..
5. You may use factory replacement ball joints with new stock ones. No Aftermarket. No welding. No aftermarket rings.
6. You may change A-arms from new style to old style A-arms. Must bolt on- No welding.
7. No all-thread shocks
8. No welding, plating, or reinforcing of the frame or suspension.
9. All factory frame holes must be left open.
10. Any reinforcement of the frame found will result in disqualification
11. CORE SUPPORT AND CORE SUPPORT MOUNT MUST REMAIN IN FACTORY LOCATION. You may shorten the front frame up to the front body mount, cannot remove the front body mount.
12. Aftermarket steering columns are ok. No Hydro Steering
13. Rear frame rails may not be shortened.
14. You may use 3/8 chain or wire from your axle to the frame hump. ONE PLACE PER SIDE. NO WELDING.
15. NO frame shaping.
16. Leaf spring must remain 100% stock, must be the same springs that are factory for the car you are running, no swapping or rearranging.

BODY
1. Cannot remove body from frame. No body bolts can be touched.
2. No body seams may be welded. No metal may be added.
3. No doubling of body panels allowed. No added metal allowed.
4. Drivers door you may weld solid, all other doors may be secured in 1 of these ways, not in combination:
- 6 pieces of chain 3/8 per door
-6 pieces of 9 wire per door with 3 wraps
-weld 10 inches total vertical seams only. 2 inch wide door strapping is as big as you can use.
7. No cold bending or tilting frames on fresh cars.
8. May cut any metal out, No welding on frame.
9. Rust Repair; the only rust repair will be in the interior of the passenger compartment for safety reasons only. unless approved by ben.

RADIATOR AND CORE SUPPORT
1. Radiator must be in stock position.
2. Any automotive type of radiator can be used. Aluminum Radiators are okay.
3. DO NOT MOVE CORE SUPPORT.
4. Factory condenser may be bolted in with (4) - 3/8 bolts.
5. Core support spacer must be no bigger than 2x2 no longer than 6” and must be free floating.
6. May change bolts for Core support to (5/8 threaded rod max) Cannot sleeve all thread. Max of 4 nuts per all thread.
7. (2) 6’’x3’’ x ⅛ flat strap with 4 pieces of ⅜ threaded rod to hold radiator in. Bolted or welded to the core support.


HOODS
MUST BE OPEN AT INSPECTION!
1. Hoods must have two (2) holes, at least four (4) inches in diameter on each side of the carburetor. (8) ⅜ bolts total may be used to hold sheet metal together around cut outs in hood.
2. Hoods may be secured by the 2 pieces of all thread in the core support. May use a 3x3 washer to hold the hood down.
3. (4) LOCATIONS of #9 wire, 5/16 chain or angle 2x2x2 inches long weld to top of the hood and fender with a ½ bolt per location.
4. You are allowed (2) locations of #9 wire from bumper to core support.

TRUNK
1. You may choose ONE of the following options for your (8) attachment points
  • a) (8) attachment point places of #9 wire to sheet metal only.
  • b) (8) 3/8 bolts and washers through the rain channel.
  • c) angle 2x2x2 inches long weld to top of the trunk and quarter panel with a ½ bolt per location.
  • d) you may weld 8- 3”x3” 1/8” flat stap to hold trunk down.
3. (2) Locations of ⅝ thread rod welded through the top of frame only through an existing body mount allowed. This will count as 2 of your attachment points.
4. You may have a single 90-degree bend anyway in your trunk lid.
6. No Fender bolts

CAGE
1. All cars must have a safety cage, the cage is meant for safety not strength. You can not use any part of the cage for reinforcement for the car. All cage material must remain 4” away from any part of the drive train.
2. A 4-point cage is required. Your cage must have a dash bar that must be 4” from the firewall.
3. Your cage must have a bar behind the driver’s seat.
4. You must have (2) side bars 1 per side and they cannot be longer than 60’’. 4’’away from the wheel tub.
5. Roll over bar cannot be more than 8” behind the top of the head rest. Rollover bar cannot attach to frame. Weld or bolt it to sheet metal only. Cannot be attached to any body mounts.
6. Rollover bar can be bolted with 2x2x2” angle to the roof, no kickers coming off the cage or rollover bar.
7. The cage can be welded to sheet metal only besides down bars.
8. (4) down posts two (2) per side. Roll over bar counts as 2 if ran to the floor. Must stay behind the front inside door seam and must stay 4” ahead of the rear body mount inside the cab. Can only be welded to the top side of the frame or body, not both.
9. Cage can be made from nothing bigger than 6” material MAX.
10. All down tubes must be at or behind the dash bar, straight up and down and above the side rail.
11. Gas tank protectors 30’’ wide max. No higher than 4’’ above the tank. 4’’ off the floor if mounted to the cage. MUST be a 4" gap between gas tank protector/gas tank and rear sheet metal which cannot be altered. Gas tank mount may have a halo behind the tank no higher than 4’’ above the tank. Halo must be vertically straight (up and down). Meaning a 90-degree angle.
12. You may have a door plate outside of the car. Can only extend 3” past the door seam.
13. All down bars / bars / rear bars and halo must be within the 60” door bars. Not in front or behind door bars.
14. Must have (2) 3x ¼” flat strap window bars or #9 wire, chain from roof to cowl. Must bolt in. No welding, cannot re-enforce the car. Sheet metal to sheet metal only.

Fresh cars are allowed 2 square 6x6x1/8 plates. 
​ 
You are allowed an additional 2 square 6x6x1/8 plates on pre runs, these must be on physical bends. If it is not a physical bend, it they will come off.

Call if you have questions, simple build. Don’t try to read into the rules, you simply will not run. This is a quick easy build.
​
Ben Porter Head Tech- 573-692-0794 Joshua Wood (573)375-0148
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  • Home
  • Events
  • Rules
    • 2025 Figure 8 Rules
    • 2025 HOBO Compact Rules
    • 2025 Street Stock Fullsize Rules
    • 2025 Compact Weld Rules
    • 2025 Bonestock Derby Rules
    • 2025 Bonestock Figure 8 Rules
    • 2025 Bump and Run Rules
    • 2025 MWFA Rules
  • Results
    • 2025 Results >
      • 2025-04-12 Russellville Figure 8
      • 2025-05-17 New Bloomfield Figure 8
      • 2025 6-21-25 Fulton Spring Show
      • 2025 Eldon Bump and Run
      • 2025 Miller County Fair Figure 8 Scramble
      • 2025 Miller County Fair Demolition Derby
    • 2024 Results >
      • 2024 Season Opener
      • New Bloomfield Figure 8 5/11/24
      • 2024 Fulton Demolition Derby and Figure 8
      • 2024 Miller County Fair Bump and Run
      • 2024 Miller County Fair Figure 8 Scramble
      • 2024 Miller County Fair Demolition Derby
      • 2024 Montgomery County Fair Figure 8 Scramble
      • 2024 Morgan County Fair Bump and Run and Bone Stock Figure 8
      • 2024 Morgan County Fair Figure 8
      • 2024 Boone County Fair Derby
      • 2024 Henry County Fair Demolition Derby
      • 2024 Jefferson City Jaycees Fair Figure 8
      • 2024 Moniteau County Fair Figure 8
      • 2024 Race for 28
      • 2024 Mokane Derby
      • 2024 California Rural Firefighter Figure 8
      • 2024 California Rural Firefighter Figure 8
      • 2024 Turkey Festival Derby and Figure 8
      • 2024 Apple Bash
      • 2024 Championship Night (Fulton)
    • 2023 Results >
      • Figure 8- Russellville (4/15/23)
      • Figure 8- New Bloomfield (5/13)
      • Derby/Figure 8 - Eldon June Demolition Derby and Figure 8
      • Derby- Richland (6-24-23)
      • Figure 8- Miller County Fair (7/7/22)
      • Derby- Miller County Fair (7/8/23)
      • Figure 8- Morgan County Fair (7/15/23)
      • Derby- Henry County Fair (7/15/23)
      • BNR/SxS/Hobo Figure 8- Eldon 7.6.23
      • figure 8- Montgomery County Fair (7/19/23)
      • figure 8- Cole County Fair (8.5.23)
      • figure 8- Moniteau County Fair (8/11/23)
      • Figure 8- Race for 28 (8/26/2023)
      • derby- 2023 Mokane World's Fair
      • Figure 8 and Derby - Sedalia (9/9/2023)
      • figure 8- California Firefighter Crash and Bash 9.23.23
      • Derby/Figure 8 - Eldon Turkey Festival 9.30.2023
      • Derby/Figure 8 - Versailles Apple Bash
      • 2023 Lucky 7's Championship Night (10/14/23)
    • 2022 Results >
      • Figure 8 - Russellville Season Opener (4-23)
      • Figure 8- New Bloomfield (5-14)
      • Double Dipper - Eldon (6-4)
      • Russellville FFA Scramble and Run 6-18-22
      • Derby- Richland Tri-County Fair (6-25)
      • Miller County Fair Bump and Jam
      • Figure 8- Miller County Fair (7/8/22)
      • Figure 8- Morgan County Fair (7/9)
      • Derby- Miller County Fair (7/9)
      • Figure 8- Lincoln County Fair
      • Figure 8- Cole County Fair (7/30)
      • Figure 8- Moniteau County Fair (8/5)
      • Figure 8- Race for 28 (8/13)
      • Derby- Mokane World's Fair (9/2)
      • Figure 8 and Hobo- Sedalia (9/10)
      • Figure 8- California Firefighter Bash (9/17)
      • Double Dipper - Turkey Festival (9/25)
      • Double Dipper - Apple Bash (10/1/22)
      • figure 8- Lucky 7's Championship Night (10/15)
    • 2021 Results >
      • Lucky 7's Season Opener (4/17)
      • 2021 Russellville FFA Scramble
      • 2021 Miller County Fair
      • 2021 Miller County Fair Derby
      • 2021 Morgan County Fair Figure 8
      • 2021 Lincoln County Fair Figure 8
      • 2021 Moniteau County Fair Figure 8 Scramble
      • 2021 Russellville Double Points
      • 2021 New Bloomfield Figure 8
      • 2021 Mokane World's Fair Demolition Derby
      • 2021 Donnie Hunter Memorial
      • 2021 Ham And Turkey Fest Figure 8
      • 2021 Lucky 7's Figure 8 Championship
      • 2021 Lucky 7's Demolition Derby Championship
    • 2020 Results >
      • Russellville Season Opener Results
      • Miller County Fair Results
      • Cole County Fair Results
      • Russellville Double Points
      • Sedalia - Donnie Hunter Memorial
      • Eldon- Turkey Festival
      • 2021 Turkey Festival
      • 2021 Apple Bash
      • Lucky 7's Championship
  • Points and Awards
    • 2025 Figure 8 Points and Awards
    • 2025 PowderPuff Figure 8 Points
  • Sponsors
  • About
  • Contact