H&R 2055571665 TRAK+ DR Series Hubcentric Wheel Adapter 66.5 to 57.1 CB (Pair)

The H&R TRAK+ Wheel Adapter (Part# 2055571665) is a DR Series hubcentric hub adapter that adapts wheels with a 66.5mm center bore to fit a vehicle hub with a 57.1mm center bore. Sold as a pair, these adapters allow fitment of non-standard center bore wheels while maintaining the precise, hubcentric fit H&R is known for.

H&R TRAK+ Wheel Adapters are engineered to bolt to the vehicle hub just like a standard TRAK+ wheel spacer, while presenting a different bolt circle or center bore on the wheel side — enabling wheels that would not otherwise fit to be mounted securely and correctly.

DR Series Notes: DR Series adapters fit between the wheel and hub and require longer wheel bolts (sold separately). Please verify bolt specifications before ordering, including bolt head type (taper or round) and required shaft length. All DR Series installations require longer wheel bolts.

Key Features:

• Hubcentric design — eliminates vibration by centering the wheel on the hub, not the bolts
• Adapts 66.5mm center bore wheels to 57.1mm center bore hubs
• Sold as a pair (two adapters)
• Manufactured from a proprietary aluminum/magnesium alloy — up to 70% lighter than comparable steel
• Hard anodized finish for lasting durability and corrosion resistance
• Maximizes vehicle track width for improved lateral stability and handling
• Suitable for year-round use, including winter applications with snow tires and wheels

Wheel Bolt Selection Guidelines (DR Series):

• New bolts must be longer than original bolts by at least the thickness of the adapter
• Bolt head must match the existing bolt type:
  • 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)
• M12×1.50 — 6.5 turns (~10mm load-bearing shaft)
• M12×1.75 — 6.5 turns (~12mm load-bearing shaft)
• M14×1.25 — 9.0 turns (~12mm load-bearing shaft)
• M14×1.50 — 7.5 turns (~12mm load-bearing shaft)
• 1/2" UNF — 8.0 turns (~11mm load-bearing shaft)

After installation, always rotate the wheel by hand to confirm clearance from brake components and ABS sensors. Ensure the wheel spins freely with no contact on the inner hub area.