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Cusco RS Rear LSD 1.5 Way (R180) ( Part Number:CUS LSD 182 L15)

Cusco RS Rear LSD 1.5 Way (R180) - Subaru STI 2004-2007

Manufacturer Part # LSD 182 L15


MSRP: $1,400.00

In stock! Ships same day
Qualifies for free shipping!


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.
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Brand: Cusco
Adjustable: Yes
LSD Function: 1.5 Way / 2 Way
Location: Rear

Mfgr. Warranty: No Warranty
Condition: New Product
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.
This product has no user uploaded media. You can upload your photo or video of your install by posting a review. Reviews:

  • Q: Cusco RS Rear L SD1,5 way(r180)  Andy's beast 12 months ago


    I have a 2006 subaru sti and mine is grinding when doing full lock slow turns will this be a drop in fit to replace mine and also what oil is recommended for this unit

    • A: Yes, this would be a direct fit for your STI and you would need to use the Cusco LSD Oil 1 Liter API/GL5 80W-140 Gear Oil (Part # CUS 010 001 R01)

      Brady R 12 months ago
  • Q: LSD Type  friendofkeebler46788 1 year ago


    Is this considered a clutch or gear type LSD? Thanks in advance.

    • A: This is a plate/clutch style LSD.

      Josh P. 1 year ago
  • Q: Lsd cusco subaru sti   Lsd cusco subaru sti 2002 2 years 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. 2 years ago
  • Q: differential ?  steven j 2 years 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 years ago
  • Q: Available for 2011 STI?  Lars 911 2 years 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. 2 years ago