8 x 6.5″ to 8 x 6.5″ – Hub and Wheel Centric Billet Adapter (Chevy/GMC)

Far From Stock Hub & Wheel-Centric Billet Adapter (86.5 86.5, 141.5 Studs, 116.7 mm Hub Bore / 121.2 mm Wheel Bore)

Must order two for a pair. Pricing is for one wheel adapter only.

Engineered for vehicles with an 86.5 (8165.1 mm) bolt pattern and factory M141.5 studs. Hub-centric to 116.7 mm (vehicle hub) and wheel-centric to 121.2 mm (wheel bore) to keep both sides precisely piloted. This is a same-pattern adapter (86.5 86.5), not a bolt-pattern conversion. Machined from 6061-T6 aluminum billet.

Vehicle Fitment (YMM) Exact Match Only

Fitment corroborated by multiple references listing GM 20012010 HD trucks and vans with 86.5 PCD, M141.5 studs, and 116.7 mm hub bore; some vendors round wheel-side bores to 121.2121.3 mm. Always verify on your exact trim before ordering. :contentReference[oaicite:0]{index=0}

Key Details

• Bolt Pattern: Vehicle 86.5 (8165.1 mm) Wheel 86.5 (8165.1 mm)
• Stud Size: M141.5
• Hub-Centric: 116.7 mm (vehicle hub side)
• Wheel-Centric: 121.2 mm (wheel bore side)
• Type: Hub- & Wheel-Centric Billet Adapter (same-pattern, not a conversion)
• Construction: Precision CNC-machined 6061-T6 billet with press-in studs

Why these outperform generic spacers

Stronger than Cast Machined from 6061-T6 Billet

• 6061-T6 aluminum: Toughness and fatigue resistance suited for working trucks.
• True hub & wheel centering: 116.7121.2 mm piloting reduces vibration and shares load correctly.
• Precision machining: Tight runout/concentricity for highway-speed stability.
• High-strength hardware: Premium studs and nuts specd to meet or exceed OEM grade.
• OEM geometry preserved: Same-pattern 86.5 keeps correct mating alignment.

Install Notes

1. Verify fitment: Confirm 86.5 (8165.1 mm) PCD, M141.5 studs, and 116.7 mm hub bore on your vehicle.
2. Confirm wheel bore: Ensure your wheels have a 121.2 mm (121.2121.3 mm) center bore to seat on the adapter lip.
3. Prep hub: Safely lift/secure vehicle; remove wheel. Clean hub face and center bore of rust/paint/debris.
4. Test-fit adapter: Slide adapter onto hub; verify full, even seating (no gaps).
5. Secure adapter: Install nuts on factory studs; tighten in a star pattern to the manufacturers torque spec.
6. Mount wheel: Place wheel on adapter studs; install lug nuts and tighten in a star pattern to spec.
7. Spin & clearance check: Rotate by hand to verify no contact with calipers, suspension, or fenders.
8. Re-torque: After 50100 miles, re-torque adapter and wheel nuts to spec; check periodically.

Follow the torque specs and seat style (cone/flat) required by your wheels and owners manual.