H&R 50275571 TRAK+ 25mm DRA Wheel Adapter 5/120 to 5/100 (Pair)

The H&R TRAK+ 50275571 is a 25mm DRA-series hubcentric wheel adapter sold as a pair. Designed to convert a 5/120 - 72.5mm center bore vehicle hub (BMW) to accept wheels with a 5/100 - 57.1mm center bore bolt pattern, these adapters allow fitment of wheels from a different vehicle make or model while simultaneously widening the track by 25mm per side (50mm total per axle).

As a DRA-series adapter, the spacer bolts directly to the hub using special included wheel bolts, and your wheel then bolts to the new threaded holes on the outboard face — no longer wheel bolts required on the hub side. This makes for a clean, secure installation with full hubcentric contact, just like the factory hub.

Key Features:

• Hubcentric design with full contact hub for even load force distribution and lateral support
• Manufactured from a proprietary aluminum/magnesium alloy — lighter and higher tensile strength than standard 6061-T6 billet aluminum
• Hard anodized finish for superior surface hardness and corrosion resistance
• Precision CNC machined in Germany to exacting tolerances
• Changes bolt pattern from 5/120 (72.5mm CB) to 5/100 (57.1mm CB)
• 25mm thickness per spacer — 50mm total track widening per axle
• DRA Series: bolts to hub with included special wheel bolts; wheel uses new threaded holes on the outboard face
• Compatible with both stock and aftermarket wheels
• Sold as a pair (two adapters)

Wheel Bolt Guidelines:

• The bolt head type must match the existing bolt seat: 60° taper (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), or flat head Porsche OE M14×1.5 (end digit 06)
• Minimum engagement (load-bearing shaft turns): M12×1.25 = 8.0 turns (~10mm); M12×1.50 = 6.5 turns (~10mm); M12×1.75 = 6.5 turns (~12mm); M14×1.25 = 9.0 turns (~12mm); M14×1.50 = 7.5 turns (~12mm)
• After installation, rotate the wheel by hand to confirm clearance from brake components and ABS sensors — minimum clearance tolerance on some vehicles (e.g., Mercedes rear axle) may be as little as 2mm

H&R TRAK+ wheel adapters are engineered in Germany and represent the same performance engineering philosophy applied across H&R's full suspension product lineup. Whether improving stance, enabling cross-platform wheel fitment, or enhancing lateral stability, TRAK+ adapters deliver a factory-quality result.