Bora 2 Inch Wheel Spacers 8×180 | Heavy-Duty GM Truck Fitment
Our 2 inch wheel spacers for 8×180 bolt pattern trucks deliver the stance and clearance upgrade GM HD owners need without compromising safety or drivability. Precision-machined from forged 6061-T6 aluminum, these spacers are engineered to handle the weight and torque of Silverado 2500HD and 3500HD models along with their GMC Sierra equivalents.
Each spacer ships with grade-8 heat-treated studs pre-installed and torqued to factory specifications. The hub-centric design centers directly on your factory hub, eliminating vibration and ensuring even load distribution across all mounting points. We designed these spacers to meet the exact tolerances demanded by full-size heavy-duty trucks running stock or aftermarket wheel packages.
Engineered for GM HD Trucks
Materials & Construction Standards
We forge every Bora wheel spacer from 6061-T6 aluminum billets using a heat-treatment process that delivers tensile strength exceeding 45,000 PSI. This alloy was selected specifically for its combination of weight savings and load-bearing capacity under the extreme forces generated by heavy-duty truck braking and cornering.
The anodized surface finish provides corrosion protection in year-round climates including road salt exposure. Each spacer undergoes CNC machining to achieve tolerances within 0.001 inch across all critical mounting surfaces. Grade-8 studs are pressed and torqued into the spacer body before shipping, eliminating the common failure point of aftermarket stud installation.
Fitment & Compatibility for 8×180 GM Trucks
These bora wheel spacers 8×180 are designed exclusively for 2011-newer Chevrolet Silverado 2500HD, 3500HD, GMC Sierra 2500HD, and 3500HD models equipped with the factory 8-lug bolt pattern measuring 180mm diameter. The 124.9mm hub bore matches OEM specifications to ensure the spacer seats flush against the factory hub.
You’ll need to verify your existing wheel studs measure 14×1.5mm thread pitch before ordering. Factory wheels on these trucks universally use this thread size, but some aftermarket wheels may require a different stud configuration. The 2.00 inch spacer thickness provides clearance for aggressive tire sizes up to 35 inches in diameter on stock suspension, or larger rubber on lifted trucks. Owners running larger brake caliper upgrades should confirm clearance between the caliper body and the inner barrel of their wheels after spacer installation.
Installation & Torque Specifications
Required Tools & Preparation
You will need a torque wrench capable of 140 lb-ft, a breaker bar, and a 22mm socket for installation. Clean the factory hub face and wheel mounting surface with brake cleaner to remove any rust, debris, or corrosion before fitting the spacer. Thread-locking compound is not required on the pre-installed studs, but we recommend applying a thin coat of anti-seize to the wheel-side threads to prevent galling during future wheel removal.
Torque Sequence
Mount the spacer onto the factory hub and hand-thread the factory lug nuts in a star pattern to ensure even seating. Torque these factory nuts to 140 lb-ft in three progressive steps: first pass at 50 lb-ft, second at 100 lb-ft, final pass at 140 lb-ft. Mount your wheel onto the spacer’s protruding studs and repeat the same star-pattern torque sequence with your wheel lug nuts. Re-check torque after the first 50 miles of driving and again at 500 miles to account for initial settling.
More 8-Lug Heavy-Duty Fitments
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Common Questions About 8×180 Wheel Spacers
Yes, these spacers are designed to work with factory GM 2500HD and 3500HD wheels from 2011-newer trucks. The 8x180mm bolt pattern, 124.9mm hub bore, and 14×1.5mm stud thread pitch all match OEM specifications.
You will need to purchase extended lug nuts for the wheel-side mounting because factory lug nuts do not provide sufficient thread engagement once the 2 inch spacer is added. Verify your wheels use a conical seat or ball seat lug design before ordering replacement nuts.
Torque the factory lug nuts that secure the spacer to the hub at 140 lb-ft using a star pattern in three progressive steps: 50 lb-ft, 100 lb-ft, then final at 140 lb-ft. Use the same torque specification and star pattern when mounting your wheels to the spacer's protruding studs.
Re-check torque after the first 50 miles of driving and again at 500 miles. This two-stage re-torque accounts for initial settling of the aluminum-to-steel interface under load.
The 2 inch thickness moves the wheel mounting surface outward, which typically provides enough clearance for most aftermarket brake upgrades. However, clearance depends on your specific wheel design—particularly the inner barrel profile and spoke offset.
We recommend test-fitting your wheels with the spacers installed before driving. Rotate the wheel by hand and verify at least 1/4 inch clearance between the caliper body and the wheel barrel at all points in the rotation.
No, these spacers require a wheel with a 124.9mm center bore to maintain the hub-centric design. If your aftermarket wheels have a larger bore, you will need hub-centric rings to adapt the wheel bore down to the spacer's outer diameter.
Using wheels with an oversized bore without adapter rings will result in a lug-centric installation that can cause vibration and uneven load distribution across the studs.
Yes, when properly installed and maintained, forged aluminum spacers are safe for towing within your truck's rated capacity. The 6061-T6 forged construction and grade-8 studs are engineered to handle the loads generated by heavy-duty truck applications including fifth-wheel and gooseneck towing.
Inspect spacer torque before every towing trip and follow the maintenance schedule in your installation instructions. The critical safety factors are proper torque, clean mounting surfaces, and using lug nuts with adequate thread engagement.
Choose spacer thickness based on your clearance requirements. If you're installing larger tires and experiencing rubbing at full steering lock, measure the distance between your tire sidewall and the nearest suspension component—this tells you the minimum spacer thickness needed.
For brake caliper clearance, test-fit your wheel without a spacer and measure the gap between the caliper and wheel barrel. If clearance is less than 1/4 inch, start with a 1.5 or 2 inch spacer depending on how much additional space you need.
Inspect and re-torque the spacer mounting nuts every 3,000 miles or during tire rotations. Remove wheels annually to clean the spacer face and hub contact surface with brake cleaner and a wire brush, especially if you drive in road salt conditions.
Look for signs of stud elongation, thread damage, or cracks in the aluminum body. While the forged construction is highly durable, impact damage from curb strikes or severe off-road use can compromise structural integrity and requires immediate spacer replacement.