Small case LSD for BMW 40% lock 168mm clutch disc set BMW E30 E36 Z3 4-cylinder Track pack - STG 1

BMW 168mm limited-slip differential: Restore and optimize performance

Specifically designed for most pre-1999 4-cylinder BMW models, the small case (168mm) limited-slip differential has been a key component in models such as the E21, E30, E36, and Z3.

Choose your package: Service Kit or Upgrade Kit

Service Package:

Restore the authentic feel of the differential with a 2-clutch set.

Stage 1 - Track Package:

2-clutch set with durable RacingDiffs clutch plates, ensuring optimal grip and durability.
Precision-machined steel cap.
Protective ramp saver washer designed to extend the differential's lifespan.

Stage 2 - Competition Package:

Aggressive 4-clutch set with upgraded RacingDiffs clutch plates for an improved performance curve.
Preload shim set.

Machined steel cap for superior strength and stability. Preload and ramp angle shim set for precise locking and better handling.

Stage 3 - Maximum Performance Package:

Aggressive 4-clutch set with premium RacingDiffs clutch plates.
Ultra-strong forged steel cap.
Preload shim set.
Multi-variation ramp set that allows drivers to precisely adjust the differential's behavior for optimal power distribution and better road connection.

To completely rebuild the differential, you will need the bearing and oil seal set.
OEM part numbers:

3314120380633-14-12-03-80633 14 12 03 80633.14.12.03.8063314120380333-14-12-03-80333 14 12 03 80333.14.12.03.8033314120380433-14-12-03-80433 14 12 03 80433.14.12.03.8043314120380533-14-12-03-80533 14 12 03 80533.14.12.03.8053314120415333-14-12-04-15333 14 12 04 15333.14.12.04.153