H&R 40535571 TRAK+ Hubcentric Wheel Adapters Ford/Volvo 5/108 63.3CB (Pair)

The H&R TRAK+ Wheel Adapters (Part #40535571) are precision-engineered, 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 wide range of wheel options without sacrificing safety or performance.

Unlike basic slip-on spacers, H&R TRAK+ Wheel Adapters mount hubcentrically to the vehicle's hub — just like a standard TRAK+ spacer — while presenting a different bolt pattern on the wheel-facing side. Available in thicknesses ranging from 20mm to 25mm, they also push the wheel outward for improved stance and handling dynamics.

Key Features:

• Hubcentric design — fits to the vehicle hub exactly as a standard wheel spacer for precise, vibration-free fitment
• Bolt pattern conversion — allows non-standard bolt pattern wheels to be fitted to your vehicle
• Made from a proprietary aluminum/magnesium alloy — up to 70% lighter than a comparable steel product
• Hard anodized finish — tough, durable, and corrosion-resistant
• Maximizes vehicle track width for improved lateral stability and lowered roll center
• Excellent for seasonal use with dedicated snow tire and wheel setups
• Sold as a pair (two adapters)

Wheel Bolt Guidelines:

When sourcing replacement wheel bolts for use with these adapters, observe the following:

• New bolts must be longer than the originals by the thickness of the adapter used
• The bolt head style must match the existing bolt style:
  • 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 Wheel Bolt Engagement (Safety):

• 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, turn the wheel by hand to confirm free rotation and verify that wheel bolts do not contact any brake system components, including ABS sensors. Note: maximum clearance tolerance on some vehicles (e.g., Mercedes rear axle) may be as little as 2mm.