Wheel spacers are one of the easiest upgrades you can make to an ATV or UTV. They are also one of the easiest to get wrong if you rush. Nearly every spacer problem we hear about comes down to lug nuts that were never torqued properly or never checked again.
Our Wild Boar Wheel Spacers – 2.5″ 4/137 10mmx1.25 are a pair of 2.5-inch billet aluminum spacers. Here is how to install them the right way.
Confirm the fit first
These spacers use a 4/137 bolt pattern and a 10mm x 1.25 thread. Your hub needs to have four studs on a 137mm circle with 10mm x 1.25 threads, and your wheel needs to match the 4/137 pattern too. Check your owner’s manual or a wheel listing for your machine. Since the spacers are sold as a pair, order two pairs for all four corners. The necessary installation hardware is included.
Step-by-step install
- Park on level ground, set the brake and loosen the lug nuts slightly while the wheel is still on the ground.
- Lift the machine safely and support it on stands, not just a jack.
- Remove the wheel and clean the hub face. Rust, dirt or old paint can keep the spacer from sitting flat.
- Slide the spacer onto the hub studs and make sure it sits flush with no gaps.
- Thread on the spacer’s lug nuts and tighten them in a crisscross pattern.
- Mount the wheel onto the spacer studs and tighten those lug nuts the same way.
Torque it right
Use a torque wrench, not an impact gun. Tighten the lug nuts in a crisscross pattern to the lug nut torque spec in your machine’s service manual. Do this for both the nuts holding the spacer to the hub and the nuts holding the wheel to the spacer. Under-tightened nuts can work loose, and over-tightened nuts can stretch studs or damage threads.
Check again after riding
This is the step people skip. After your first ride, check the torque on every lug nut again, since parts can settle as they seat. Then make it part of your regular pre-ride check. With 2.5 inches of spacer per side, you get a wider stance for stability and more room for bigger tires, but only if everything stays tight. Questions about fitment or install? Call the Wild Boar team at 850-912-4350.
