Brand: Cusco
Product: Type RS LSD Limited Slip Differential Front
Part Num.: LSD 450 C15SPECIFICATIONS:
Diff Type: ACD
Initial Setting: 1.5 WayCOMPATIBILITY NOTES:
ONLY for CT9Ws 9/05-12/06
MT use only
Including Side bearing.
For use with mission side bearing LSD 450 SB sold separately.
Included side bearing is ACD side.(LSD 449 SB)

Mitsubishi Lancer Evolution IX CT9A 4G63 (03/2005-03/2007)
Mitsubishi Lancer Evolution VIII CT9A 4G63 (01/2003-02/2005)
Mitsubishi Lancer Evolution Wagon CT9W 4G63 (09/2003-12/2006)

The RS LSD uses a spring technology which keeps differential noises to a minimum, improves durability due to the clutch plates enduring lower pressures, and better lap times from low power loss for any vehicle. With Cusco’s long time development of LSD’s, they have been able to produce top quality LSD’s for a wide selection of different vehicles. Cusco’s extensive LSD knowledge and experience has produced some of the most versatile, durable and effective LSD’s on the market. In addition, some LSD’s can be changed between the different Way configurations for the best results in different race applications.

Here is a description from Cusco explaining the differences between the differential types available for the aftermarket:

One way LSD – specially suited for front wheel drive cars and 4WD car front axles. Activates under acceleration, and acts as a true LSD when the throttle is off. A great chance for improved lap times. A CUSCO original design.

1.5 way LSD – Activates under acceleration while the understeer is less than on the 2 way LSD. Recommended for drivers having difficulty with 2 way LSD understeer and one way LSD braking.

Two way LSD – Recommended on the rear axle for rear drive cars. Activates on both acceleration and deceleration. Recommended for those who prefer hot driving action and big angle drift.

These differentials have the option to be interchangeable between 1& 2 way, 1.5 & 2 way Please select the switchable combination that you would like and the initial way setup.

The Cusco LSD features high tension chrome molybdenum steel housing and gears. The Cusco LSD is up for the task of serious competition. With large oil windows for increased flow and Cusco’s original groove cut technology for improved efficiency on the clutch plates, stability, and longevity is promoted. The 1-way can be converted to a 2-way or the other way around.

The Cusco Type RS LSD had proved to be capable of competition use in the All Japan Gymkhana Championship without overhauling a single time during the season. With all drivers and teams finishing with good or championship results at the end of the season.

According to Cuscos in house research, initial torque is 50 to 70% lower compared to the conventional cone plate type LSD enabling lower drive friction and better response.

• Low power loss means better lap times for even the mild tuned of cars
• Chattering is kept low
• Improved durability as clutch plates are low pressured
• The LSD efficiency is higher with smoother oil flow between plates.
• Special precision springs, set in the pressure plate, assure steady coil movement
• Clutch plates do not stick together like conventional cone plate type LSDs. Therefore less clutch plate wear or deterioration occurs.

IIJIM RALLY