Bora Tractor Wheel Spacers – Heavy-Duty Stability for Agricultural Machinery
Our bora tractor wheel spacers are precision CNC-machined from aerospace-grade 6061-T6 aluminum to deliver reliable track-width adjustment for agricultural equipment. Designed for working farms, these spacers add stability on hillsides, improve loader performance, and eliminate tire interference when running dual wheels or wider implements.
Every Bora spacer meets or exceeds SAE J694 standards for wheel attachment. We build them in our U.S. facility with full traceability, from billet stock through final inspection. Farmers and commercial operators trust Bora spacers for daily work cycles spanning thousands of hours—hauling grain, moving hay, and operating front-end loaders in conditions where equipment failure is not an option.
Built to last on working farms
Why Bora Spacers Are Built Different
We machine every Bora tractor wheel spacer from a single block of heat-treated aluminum—no castings, no weld joints. This eliminates hidden voids and ensures uniform grain structure across the entire load path. You get consistent clamping force at every stud, which translates to zero play and no loosening over time.
Hub-centric bore fits snugly over your tractor’s existing hub pilot, so the spacer carries the vehicle weight on the machined shoulder rather than the wheel studs. That design keeps stress off the threads and prevents the slow wallowing-out you see with lug-centric spacers after a season of field work. Our engineering mimics the OEM wheel-hub interface—just longer.
Installation and Torque Specifications
Pre-Installation Checklist
Confirm your tractor’s bolt pattern and hub pilot diameter before ordering. Measure center-to-center stud spacing and count the lugs—common ag patterns include 5 on 5.5″, 6 on 6.75″, and 8 on 10″. The pilot bore must match your hub diameter within 0.005″ to maintain hub-centric fit.
Mounting Procedure
Remove the wheel and clean the hub face with a wire brush to eliminate rust scale and old thread locker. Slide the spacer onto the hub, aligning the pilot bore. Thread the included hardened studs into the factory threaded holes, torquing to 90 lb-ft in a star pattern. Mount the wheel onto the new studs and torque lug nuts to your tractor manufacturer’s spec—typically 120–150 lb-ft for agricultural equipment.
Sizing for Implements and Dual-Wheel Setups
Track width is not arbitrary—it’s driven by implement clearance, row spacing, and the need to avoid tire rub when running duals. A 2″ spacer per side adds four inches to your overall tractor width, which is often the minimum needed to clear a 72″ rotary cutter deck or prevent inside dual tires from contacting the fender.
For row-crop work, match your spacer width to standard row spacing: 30″ rows typically call for 1.5″ spacers, while 36″ or 40″ beds may require 2.5″ or 3″ depending on tire diameter. We recommend test-fitting with the implement attached before final installation—measure from the inside tire sidewall to the nearest frame or hitch component at full steering lock in both directions.
Spacer Solutions for Popular Tractor Brands
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Common Questions About Bora Tractor Wheel Spacers
Compatibility depends on your tractor's bolt pattern, hub pilot diameter, and stud thread size. Common agricultural patterns include 5 on 5.5 inches, 6 on 6.75 inches, and 8 on 10 inches. Measure your existing wheel's bolt circle and pilot bore before ordering.
If your tractor uses metric fasteners or an unusual bolt pattern, contact us with your make, model, and year. We maintain fitment data for over 400 tractor models and can confirm compatibility within one business day.
Spacer width should be determined by your implement clearance needs and whether you plan to run dual wheels. Measure from the inside edge of your current tire to the nearest frame component, fender, or hydraulic line at full steering lock. Subtract one inch for safety margin, then divide by two to get the per-side spacer width.
For dual-wheel setups, you need enough width to prevent the inner tire from contacting the brake housing or PTO shield. Most operators find that 2 to 2.5 inches per side provides adequate clearance for common agricultural applications.
Yes, when properly installed and maintained. Bora spacers are engineered to exceed the static and dynamic loads imposed by agricultural equipment, including front-end loader operation and road transport at speeds up to 35 mph. Our hub-centric design transfers the vehicle weight through the machined shoulder rather than the wheel studs, which is the same load path used by factory wheels.
Safety depends on correct installation: torque all fasteners to specification, re-torque after the first five and 25 operating hours, and inspect stud tightness every 100 hours during heavy use. Never exceed your tractor's gross vehicle weight rating or operate with loose or damaged hardware.
Yes. Re-torque all wheel studs and lug nuts after the first five operating hours, then again at 25 hours. This initial break-in period allows the mating surfaces to fully seat and the thread locker to cure.
After the break-in, check torque every 100 engine hours if you use the tractor for commercial work or heavy loader duty. For light-duty farm use, inspect quarterly or at the start of each season. Proper torque maintenance prevents stud loosening and ensures long-term joint integrity.
Wider track width improves lateral stability, especially on hillsides and during loader operation. You will notice increased resistance to tipping when lifting loads or maneuvering on uneven ground. The tradeoff is slightly reduced maneuverability in tight spaces—your turning radius increases in proportion to the added width.
Most operators report that the stability gain outweighs the minor loss of agility, particularly when working slopes or operating implements that shift the center of gravity. If you primarily work in confined areas like orchards or narrow barns, consider the smallest spacer width that meets your clearance needs.
Bora spacers work with any wheel that matches your tractor's original bolt pattern and hub bore, including aftermarket steel and aluminum wheels. The critical dimensions are the bolt circle diameter and the center pilot bore—both must match your tractor's hub specifications.
If you have custom wheels with a different offset or unusual stud configuration, verify that the spacer's pilot bore and bolt pattern align with both your tractor hub and the wheel. We do not recommend adapting between different bolt patterns using a spacer; use a dedicated wheel adapter for that application.
Inspect the spacer face and hub-mating surface for dirt, corrosion, or damage during routine wheel removal. Clean both surfaces with a wire brush and apply a thin coat of anti-seize compound to prevent galvanic corrosion between the aluminum spacer and steel hub.
Check all wheel studs and lug nuts for proper torque at the intervals described above. If you operate in corrosive environments—salt-treated roads, liquid fertilizer, coastal areas—rinse the spacers with fresh water monthly and inspect the anodized coating for signs of wear. Replace any spacer that shows cracks, thread damage, or deformation.