Precision Hub Adapters & PCD Conversion Kits – CNC Machined in the UK

Brightstone Engineering produces high-quality hub adapters (also known as PCD adapters) for fitting wheels with different bolt patterns. Whether you’re converting BMW 5x120 to 5x114.3 or fitting aftermarket wheels from another brand, our CNC-machined aluminium adapters make it possible – safely and securely.

Each PCD adapter kit is designed and machined in the UK from strong, lightweight 6082-T6 aluminium and includes:

• Precision-machined adapters with dual bolt patterns
• Correct hubcentric centre bore for your vehicle
• Extended wheel bolts or studs included where required
• Black anodised finish for corrosion resistance

Hub adapters are perfect for stance setups, brake clearance, or fitting rare wheels across brands. We offer stock PCD conversions and custom hub adapters for unique applications – including BMW, Audi, Porsche, Mercedes, and more.

Designed and built in the UK with fast shipping and a 2-year warranty. Browse our available kits below or contact us to request a custom configuration.

Also see our Wheel Spacers and Gearbox Adapters