4PCs 6x5.5 Wheel Adapters 108mm Bore 6mm Thick - Fit 6x139.7mm Trucks

In this review the 4PCs 6x5.5 Wheel Adapters are evaluated for drivers who need a thin, reliable spacer to adapt 6x139.7mm wheels to vehicles with a 108mm center bore. The bottom line: these adapters are a practical choice for owners of Chevy, GMC, Ford, Toyota and Ram trucks and SUVs who want improved wheel fitment and the ability to run wider tires or larger brake calipers without major modification. The set of four, CNC machined from 6061-T6 aluminum with an anodized finish, offers corrosion protection and a lightweight solution for moderate offset correction.

Key Features

• 6mm Thickness: Provides modest spacing to clear calipers and change wheel offset without excessive stress on studs.
• 108mm Center Bore: Matches common hub sizes to keep the wheel centered and reduce vibration when fitted correctly.
• 6x5.5 Wheel Bolt Pattern: Allows 6x139.7mm wheels to be mounted on a wide range of trucks and SUVs for compatibility.
• 6061-T6 Aluminum Construction: Forged and CNC machined material keeps weight down while maintaining structural strength.
• Anodized Surface: Offers high-grade corrosion protection to prolong service life in harsh driving conditions.
• Set of 4: Sold as a full axle set so buyers can install on front or rear axles without sourcing additional pieces.

Who It's For

These wheel adapters are best for truck and SUV owners who want a simple, lightweight spacer to correct offset, run slightly wider wheels, or create additional clearance for brake upgrades. They work well for those who need compatibility across popular models like Silverado, Sierra, F150, Tacoma and 4Runner and prefer CNC-machined aluminum over heavier steel spacers.

People who need large spacers beyond 6mm thickness, hub-centric spacers with integrated hubs, or who plan aggressive off-road wheel setups should look elsewhere; this set does not include hub rings and is intended for modest fitment changes rather than extreme wheel offsets.

Pros & Cons

Pros

• Lightweight 6061-T6 aluminum construction reduces unsprung mass compared with steel options.
• Anodized finish improves corrosion resistance for longer service life in road conditions.
• Direct bolt pattern and 108mm bore compatibility covers a broad range of trucks and SUVs.
• Sold as a set of four so both sides of an axle can be completed at once.

Cons

• The 6mm thickness is limited to mild offset correction and will not suit large clearance needs.
• Does not come with hub rings or an integrated hub, so hub-centric fit may require additional parts for some vehicles.

Specifications

Our Verdict

The 4PCs 6x5.5 Wheel Adapters represent a sensible, value-oriented option for drivers who need a modest 6mm spacer with broad vehicle compatibility and corrosion-resistant construction. Buy these if you want to tweak offset, fit wider wheels, or gain small clearance for brakes on common trucks and SUVs; skip them if you need thicker spacers or an integrated hub-centric solution.

Frequently Asked Questions

Will these adapters fit Silverado and Sierra trucks?
Yes, they list compatibility with Silverado and Sierra models that use a 108mm center bore and 6x139.7mm bolt pattern.

Do they include hub rings or come hub-centric?
No, the set does not include hub rings or an integrated hub, so hub-centric adapters may require additional rings for perfect fitment.

Are these adapters corrosion resistant for road use?
Yes, the adapters are anodized and include a special coating process to provide improved corrosion protection.