We sell complete, ready-to-mount Limited Slip Differentials. For BMW E30, E36, E34, E32, E46, M3, M5, M6 and Z4M. 

Each option includes:

• ALL Solutions LSD unit
• Bearing and oil seal set
• Sandblasted and painted housing
• A laser engraved rear cover (please leave a note at checkout)

 If you want to calculate the best gear ratio for your application, check our Gear calculator.

RacingDiffs complete differential is not an off-the-shelf product. We assemble it specifically for you on receiving the order. The lead-time is 2 weeks. 

The differential is delivered without any oil, so just fill it with oil and mount it on the car. We recommend 100 km of average driving as the best break-in procedure. 

RacingDiffs recommends Motul Gear Competition 75w140 oil for all products.