Walk through the pits at any mud event and you will notice a pattern: the machines going deepest are often riding on tall, skinny tires. There is a reason that look keeps showing up.
The EFX Motohavok 37×8.5-24 Tires on American Force K12 Shredder Black Forged Wheels package brings that shape to your build with four EFX Motohavok tires, four American Force K12 Shredder wheels, lug nuts and center caps.
Tall and narrow on purpose
A 37×8.5-24 tire is about 37 inches tall and only about 8.5 inches wide, on a 24 inch wheel. A narrow tire concentrates the machine’s weight on a smaller footprint, which helps it dig down through soft mud toward firmer ground. The height adds a big jump in clearance, so the frame and differentials stay higher above the muck.
American Force K12 Shredder
The K12 Shredder is a forged wheel from American Force in black. Forged wheels are a common pick on premium builds, and the black finish keeps the look clean behind the tall sidewall. A 24 inch wheel diameter also gives the package a big, aggressive stance.
Built machines only
Thirty-seven inch tires are not a casual swap. Most machines need a portal gear lift or a major lift to run them, plus heavy-duty axles and clutch work. The gear reduction from portals is especially helpful, since spinning a tall tire puts heavy leverage on belts and drivetrain parts. Plan the full build before you order tires.
Tires this tall also change the steering feel and add weight at each corner. Builders often upgrade brakes and steering parts as part of a 37 inch build to keep the machine safe and predictable on the trail.
What comes inside the package:
- Four EFX Motohavok 37×8.5-24 tires
- Four American Force K12 Shredder black forged wheels
- Lug nuts
- Center caps
Fitment checklist
Confirm your bolt pattern and the wheel offset your hubs need. Measure clearance at the fenders, cab and suspension at full lock and full compression. If you are running portals or offset arms, account for how they move the tire. A narrow tire helps with inside clearance, but a 37 inch height still needs plenty of room above and behind the tire.
Not sure if your machine is ready for 37s? Call the Wild Boar team at 850-912-4350 and we will help you plan it out.


