H&R 40235571 TRAK+ 20mm Wheel Adapter 5/108 - 63.3 CB (Pair)

The H&R TRAK+ 40235571 is a 20mm hubcentric wheel adapter designed to adapt Ford/Volvo wheels with a 5/108 bolt pattern and 63.3mm center bore. Sold as a pair, these adapters change your vehicle's bolt pattern so that wheels from a different vehicle make or model can be properly fitted—without sacrificing the precision fit and load distribution of a factory hub.

H&R TRAK+ Wheel Adapters mount to the vehicle hub in the same hubcentric fashion as a standard TRAK+ wheel spacer, but feature a different bolt pattern on the wheel-facing side, enabling non-standard bolt pattern wheel fitment. The full-contact hubcentric design ensures even load force distribution and lateral support across the entire interface—just like the OEM hub.

Key Features:

• 20mm thickness — widens track width while enabling bolt pattern conversion
• Hubcentric design with full contact hub for even load distribution and lateral support
• Adapts 5/108 – 63.3mm center bore Ford/Volvo wheels
• Manufactured from a proprietary aluminum/magnesium alloy with higher tensile strength than standard 6061-T6 billet aluminum
• Hard anodized finish for long-lasting corrosion resistance and durability
• Sold as a pair (two adapters)
• Compatible with both stock and aftermarket wheels

TRAK+ Series Guide:

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

Wheel Bolt Selection Guidelines (if applicable):

• Replacement bolts must be longer than the originals by the width of the adapter used (20mm)
• Bolt head style must match the existing bolt — taper 60°, round head, or flat head as required by your application
• Minimum thread engagement requirements by bolt size:
  • 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)
  • ½″ UNF — 8.0 turns (~11mm load-bearing shaft length)
• After installation, rotate the wheel by hand and verify clearance on the inside of the hub. The wheel must rotate freely with no contact with brake components or ABS sensors.