BMW Built Axles

‘Built Axles’ are for BMW customers with a ring gear which is friction-welded to the OEM differential, commonly on BMWs manufactured from 2007. To upgrade to a Wavetrac or any other aftermarket differential, this friction-welded ring gear and differential assembly needs to be separated. Once separated, the ring gear can be machined and threaded for use with a Wavetrac LSD.

Previously, this process meant several days of vehicle downtime while waiting for machine shop work. Today, however, Wavetrac shop stocks a range of the most popular pre-built and Wavetrac-equipped axles, including BMW rear axle options, so you can install them in a matter of hours rather than days.

Benefits of Wavetrac-Equipped Built Axles

Upgrading with Built Axles ensures that your BMW can handle increased performance demands both on the road and track. This solution is ideal for enthusiasts who demand more stability, grip, and reliability compared to factory setups. Wavetrac Europe are the trusted differential suppliers to provide only the highest-quality components.

Key Features:

  • Pre-built axles with Wavetrac LSD already installed
  • Precision machining of ring gears for secure fitment
  • Reduced vehicle downtime – installation within hours
  • Designed for performance BMW models with welded ring gears
  • Reliable upgrade for road, track, and motorsport use

Compatible with differential shims for precise setup and adjustment

Upgrade Your BMW Axle with Confidence

With Wavetrac Europe’s range of Built Axles, you no longer need to wait days for machining. Simply swap your OEM axle for a Wavetrac-equipped BMW built axle and enjoy the benefits of improved traction, stability, and performance with minimal downtime.

fast delivery, amazing service

‘’Had a Wavetrac in my MK5 Golf, Alpina B10 and Porsche Cayman S. Just about to fit one to my BMW M3 E92 and will more than likely continue to fit one to every one of my cars. Track day performance is incredible, especially in the wet or on tight tracks. Excellent on my daily Alpina too, rain, ice and snow - it's an all weather machine despite being an automatic BMW!’’

Ryan Stewart