Cusco RS Rear LSD 1.5 Way (R180)

Part #: CUS LSD 182 L15


MSRP: $1,400.00


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Brand: Cusco
Adjustable: Yes
LSD Function: 1.5 Way / 2 Way
Location: Rear
Mfgr. Warranty: No Warranty
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


Subaru Impreza
WRX STI 2004, 2005, 2006, 2007WRX STI Limited 2007

Featuring high tension chrome molybdenium 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 1.5-way Type RS utilizes coil springs located between the pressure rings to develop initial torque and features full engagement during acceleration and partially under deceleration. The use of coil springs rather than cone plates help promote faster, smoother engagement, along with higher durability. This LSD can be converted to a 2 way LSD as well.

The LSD is completely customizable with different clutch pack order and spring tension preset, allows them to be set up to exact preference of the end user. This particular unit can also be changed into a 2 way by rotating the center spline to engage on acceleration and deceleration.
This product has no user uploaded media. You can upload your photo or video of your install by posting a review.





  • AnswerQ: Lsd cusco subaru sti   Lsd cusco subaru sti 2002 1 month ago

    Bonjour je recherche un lsd cusco 2 voies ou 1.5 pour ma subaru sti 2002 pouvez vous me indiqué le bon modèle si vous le vendez merci

    • A: Este LSD se puede ajustar a 1,5 o 2 manera. Debe adaptarse a su coche si usted tiene un diferencial trasero R180 , pero no podemos garantizar el mobiliario en los coches fuera de los EE.UU. .

      Zach G. 1 month ago

  • AnswerQ: differential ?  steven j 2 months ago

    Would this work on my 05 wrx ? also would it work with an automatic transmission ?

    • A: This LSD will not work with WRX models, and it is specifically for STI models. This is not confirmed to work with automatic transmissions.

      Zach G. 2 months ago

  • AnswerQ: Available for 2011 STI?  Lars 911 5 months ago

    Are Cusco LSD's also available for a 2011 STI? It is any listed when I choose the 2011 STi as my car. Weird since a friend of mine has one of Cusco's LSD's on his 2008 STI and he's recommended it to me.

    • A: Cusco LSDs are available for your 2011 STI, and please contact customer service for more information.

      Zach G. 5 months ago

  • AnswerQ: replacement?  john.iacovino08777 12 months ago

    i recently broke my oem rear diff on my 04 sti, can this be used as a direct replacement for the oem rear diff?

    • A: This LSD can be used as a direct replacement for stock, although you will need to reuse some stock diff components with this.

      Zach G. 12 months ago

  • AnswerQ: Cam angle  Jimmy.J 1 year ago

    Whats the cam angle on this?

    • A: The 1.5 way cams are 55/20 and the 2 way cams are 55/55.

      Zach G. 1 year ago