BMW Welded Diff Conversion Kits

The BMW Welded Diff Conversion Kit is designed for customers who want to send us their original open or LSD differential and ring gear for modification. This service is essential for BMW models with a BMW welded diff, where the factory ring gear is friction-welded to the differential.

Professional Conversion Service

As part of the BMW conversion kit service, we take your supplied welded diff and ring gear, separate them, and then carry out precision machining. The ring gear is drilled and threaded to specification, allowing it to accept bolts for a secure and reliable fitment. Our experience working with top car differential manufacturers ensures accuracy and durability throughout the process.

What the Service Includes:

  • Separation of factory welded differential and ring gear
  • Machining, drilling, and threading of the ring gear
  • Preparation for bolt-on installation with aftermarket LSD units
  • Option to have the modified setup installed into your existing axle (additional service available)

Reliable Upgrade with Trusted Suppliers

By choosing our BMW welded diff conversion service, you benefit from working with experienced technicians and leading differential suppliers. This ensures your BMW is equipped with a strong, reliable setup ready for performance applications on the road or track.

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