H&R 607557403 TRAK+ Hubcentric Wheel Adapter 5/112 66.5CB 14x1.5 (Pair)

The H&R TRAK+ Wheel Adapter (Part #607557403) is a precision-engineered, hubcentric wheel adapter sold as a pair, designed to adapt wheels with a 5/112 bolt pattern, 66.5mm center bore, and 14x1.5 thread pitch — a common Mercedes-Benz specification — to a different bolt pattern or hub configuration. This allows fitment of wheels from a different vehicle make or model onto your hub without sacrificing hub-to-wheel alignment.

Unlike basic flat spacers, H&R TRAK+ Adapters are fully hubcentric, mating flush to the vehicle hub just like a factory wheel would. This full-contact hub design ensures even load force distribution and lateral support, eliminating the vibration and imbalance issues often associated with non-hubcentric designs.

Key Features:

• Hubcentric design with full contact hub for even load distribution and lateral support
• Manufactured from a proprietary aluminum alloy with higher tensile strength than standard 6061-T6 billet aluminum
• Hard anodized finish for long-lasting corrosion resistance and durability
• Changes the vehicle bolt pattern to allow fitment of wheels from a different make or model
• Widens the vehicle track for improved stance, reduced body roll, and increased lateral stability
• Compatible with stock and aftermarket wheels
• Sold as a pair
• Engineered and manufactured in Germany

Adapter Specifications:

• Hub-side bolt pattern: 5/112
• Center bore: 66.5mm
• Thread pitch: M14 x 1.5

Wheel Bolt Safety Guidelines:

• Replacement bolts must be longer than the originals by the thickness of the adapter
• Bolt head style must match the original: taper 60° (suffix 01), round head M12/24mm or M14/28mm (suffix 02), round head M12/26mm OE VAG (suffix 03), or flat head Porsche M14x1.5 (suffix 06)
• Minimum thread engagement for M14 x 1.5: 7.5 turns (~12mm load-bearing shaft length)
• After installation, rotate the wheel by hand to verify brake system clearance — particularly ABS sensors. Note: maximum tolerance on some Mercedes rear axles is only 2mm.

H&R TRAK+ Wheel Adapters are the preferred choice for enthusiasts seeking a precise, performance-oriented solution for cross-pattern wheel fitment with no compromise in safety or handling integrity.