H&R 50535571 TRAK+ Hubcentric Wheel Adapters for Ford/Volvo 5/108 63.3CB (Pair)

The H&R TRAK+ Wheel Adapters (Part #50535571) are hubcentric wheel adapters designed to adapt Ford/Volvo wheels with a 5/108 bolt pattern and 63.3mm center bore. Sold as a pair, these adapters allow fitment of wheels with a different bolt pattern than your vehicle's hub, opening up a wider range of wheel options while maintaining a secure, factory-quality fit.

Unlike a standard wheel spacer, TRAK+ Wheel Adapters feature a different bolt pattern on the wheel-facing side of the spacer, enabling non-standard bolt pattern wheel fitment. Like H&R's TRAK+ DRM Series spacers, these adapters are hubcentric—meaning they seat precisely on the vehicle hub just as OEM components do—ensuring proper centering, reduced vibration, and safe operation.

Available in thicknesses ranging from 20mm to 25mm, these adapters also widen the vehicle's track, improving stance and handling dynamics by lowering the roll center and increasing lateral stability.

Key Features:

• Hubcentric design for precise fitment and reduced vibration
• Adapts 5/108 bolt pattern with 63.3mm center bore (Ford/Volvo application)
• Widens vehicle track width for improved handling and aggressive stance
• Made from a proprietary aluminum/magnesium alloy — up to 70% lighter than comparable steel spacers
• Hard anodized finish for corrosion resistance and long-term durability
• Suitable for winter use with snow tires and alternate wheel sets
• Sold as a pair (2 adapters)

TRAK+ Adapter Series Overview:

• DR Series (10–40mm): Fits between wheel and hub; requires longer wheel bolts (ordered separately)
• DRS Series (10–40mm): Fits between wheel and hub; includes longer wheel studs for replacement
• DRA Series (40–60mm): Bolts to hub with included special wheel bolts; provides new threaded holes
• DRM Series (40–90mm): Bolts to hub using existing wheel studs and included special nuts; wheel bolts to new DRM wheel studs

Wheel Bolt Selection Guidelines:

• New bolts must be longer than originals by the width of the spacer used
• Bolt head style must match existing hardware:
  • Taper 60° — End digit 01
  • Round head M12/d24mm or M14/d28mm — End digit 02
  • Round head M12/d26mm (e.g., OE VAG wheels) — End digit 03
  • Flat head for Porsche OE wheels M14×1.5 — End digit 06

Minimum Thread Engagement Safety Guidelines:

• M12×1.25 — 8.0 turns (~10mm load-bearing shaft length)
• M12×1.50 — 6.5 turns (~10mm load-bearing shaft length)
• M12×1.75 — 6.5 turns (~12mm load-bearing shaft length)
• M14×1.25 — 9.0 turns (~12mm load-bearing shaft length)
• M14×1.50 — 7.5 turns (~12mm load-bearing shaft length)
• 1/2" UNF — 8.0 turns (~11mm load-bearing shaft length)

After installation, always verify that wheel bolts do not contact any brake system components, including ABS sensors. Rotate the wheel by hand and confirm free movement with adequate clearance inside the hub. Note that maximum tolerance on some vehicles may be as little as 2mm (e.g., Mercedes rear axle).