RacingDiffs Progressive Limited Slip Differential conversion set for BMW 188L

This RacingDiffs set is a NEW & Easy mount version which does not require machined spider gear to be fitted. The set contains all parts necessary for installation.

This kit is suitable for the most BMW non-M models such as:
- 1 series: E81, E82, E87, E88, F20
- 3 series: E30, E36, E46, E90, E91, E92, E93, F30
- 5 series: E28, E34, E39, E60, E61, F10
- 6 series: E63, E64
- 7 series: E23, E32, E38, E65, E66, E67
- X1: E84 (rear diff)
- X3: E83 (rear diff)
- X5: E53, E70 (rear diff)


Exceptions:
1. Z4, X3 has 188L differential type, although catalog shows 188K. 
2. All models after production year 2008 have 188LW, although catalog shows 188L.


Important notes:
-Before installation of the RacingDiffs LSD conversion set, please inspect the inner surface of small spider gears. It is important that it is not damaged from previous usage. It needs to be smooth, otherwise it will cause premature wear of new central pin and possible break down. If it is not completely smooth, please make sure to have the surface of the gears machined.
-All BMW models after year 2008 have welded ring gear to the carrier unit. Installation of any kind of aftermarket LSD unit requires ring gear to be machined off which includes RacingDiffs Progressive LSD conversion set.
 

There are 2 key points which differ RacingDiffs kit from any other on the market:

1. NO material warping. RacingDiffs engineers decided to make NO compromise on the material quality and made the plates from the highest quality tool steel, heat treated and nitrated to achieve the highest wear resistance and added Friction discs between plates and spider gears that are made from the same material as RacingDiffs LSD clutch plates. This solution successfully stopped metal shavings, which is the biggest problem of cheap LSD kits.

2. Maximum performance increase. The main goal of the kit is to achieve the progressiveness. RacingDiffs applied the design from ZF plated LSD units with Ramp Angles. The specific Ramp angle design allows for low pre-load, while still retaining a progressive lock capability; essentially, although the vehicle will feel like driving with an open diff in slow turns/street driving, it will transmit torque to both drive wheels under load (higher revs). Therefore, besides high load springs, RacingDiffs LSD conversion set relies on Dynamic lock from ramp angles.

With these improvements, the RacingDiffs LSD conversion set is the most advanced LSD kit on the market.

Due to continued product improvement, the product illustrated on the photo may vary slightly from the actual product.