Subaru Impreza WRX STI (DCCD and Rear LSD) - Clutch plate service pack

Subaru Impreza WRX STI

Drivetrain upgrade components

Rear Limited slip differential (R180)

DCCD (Driver's control center differential)

 How does Subaru DCCD works?

The Driver's Control Centre Differential (DCCD) allows the center differential locking of the WRX STI to be dialed in and adjust its handling. It adjusts both an electromagnetic multi-plate transfer clutch and mechanical locking of a Limited Slip Differential (LSD) to distribute torque to the front and rear wheels. Auto Mode identifies the ideal power distribution for changing conditions, whilst Auto [+] keeps more power up front for increased traction. Auto [-] transfers more power to the rear for tighter cornering, and the six-step Manual Mode locks in the driver's favorite handling characteristics.

In order to operate as designed, clutch plates inside the DCCD unit must be capable to transfer the torque, especially when the engine is modified to the higher power. Therefore RacingDiffs Ltd Developed and tested performance upgrade plates which are capable of transferring 1000+ HP. The kit is direct replacement for OEM plates, so NO modifications are required.

Rear Limited Slip differential - R180 LSD

With this kit, you won't just restore the LSD performance, you will upgrade it by far. Our clutch plates are the Molybdenum-Ceramics coated, which is far superior to any factory metal plates. There is no possibility of metal shavings as with the metal plates. Operating temperature is decreased by 15% which makes the diff more durable in severe conditions and high Horse power applications.

Highly recommended for everybody who visits track regularly!

Fits all OEM Clutch type R180 Limited slip differentials!

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

OEM part numbers:

ST3900055040
ST3900055020

390004S020