5x5 to 5x5.5 Wheel Adapters 1.25 in Bolt Pattern Converter - Durable

In this review the KAX 5x5 to 5x5.5 wheel adapters are evaluated for drivers who need to change bolt patterns or push wheels outward by 1.25 in. The single biggest reason to buy is the combination of forged 6061-T6 aluminum construction and SGS certified 10.9 class nuts and studs, which deliver a level of build integrity customers repeatedly praised. These adapters are intended for vehicles with a 5x5 in (5x127mm) hub and wheels with a 5x5.5 in (5x139.7mm) bolt pattern, and they come as a 4pc kit with split nuts and an instruction manual.

Key Features

• Forged 6061-T6 aluminum: Provides high strength while keeping adapters lightweight, which helps maintain wheel balance and minimize added unsprung mass.
• Changes bolt pattern: Converts a 5x5 in hub to accept 5x5.5 in wheels so owners can fit wheels that otherwise would not bolt up.
• 1.25 in thickness: Adds offset to push wheels outward for improved stance or to clear brakes and suspension components.
• 78.3mm center bore hub centric: Centers on the hub bore without a lip to aid alignment and reduce vibration when matched to the stated hub diameter.
• 10.9 grade split nuts and 1/2 in x20 studs: Hardware is specified for high tensile strength and durability under road conditions.
• Recommended torque guidance: Supplied torque range of 75-85 ft/lbs helps ensure secure fastening when installed correctly.

Who It's For

The adapters are best for owners of compatible models listed in the product compatibility who want to fit 5x5.5 in wheels on a 5x5 in hub, or drivers who need an extra 1.25 in of offset for clearance or styling. Enthusiasts fitting aftermarket wheels for a custom look or to clear larger brakes will find the forged construction and heavy-duty hardware appropriate.

These adapters are not for anyone with less than 2 in of clearance between fender and tire, or for drivers unwilling to verify stud length and perform safe installation. If you need a lip-type hub centric adapter or a different bolt pattern conversion, look for a model matched to those exact specs instead.

Pros & Cons

Pros

• Strong forged 6061-T6 construction provides confidence in long-term use.
• High-tensile 10.9 class hardware improves reliability under load.
• Clear specification for torque and hub bore makes fitment and installation straightforward when vehicle is compatible.

Cons

• Fit receives mixed feedback, so careful measurement of hub bore, stud length and fender clearance is necessary before purchase.

Specifications

Our Verdict

The KAX 5x5 to 5x5.5 adapters are a sensible choice for owners who need a reliable bolt pattern conversion and a modest outward offset. The forged 6061-T6 construction and certified hardware make them good value for the price when the vehicle and wheel specs match. Buy only after confirming hub bore, stud length and fender clearance to avoid fit issues.

Frequently Asked Questions

Will these fit my vehicle?
They fit vehicles with a 5x5 in hub and wheels with a 5x5.5 in bolt pattern; verify your hub bore is 78.3mm and you have adequate fender clearance before ordering.

Do I need to trim studs?
If factory wheel studs are longer than the adapter thickness, trimming may be required; check studs and follow the included installation instructions.

What torque should be used?
Use the recommended torque of 75-85 ft/lbs on the wheel nuts to secure the adapter per the manufacturer guidance.