What is the main benefit of a 1-way limited-slip differential?

A 1-way LSD primarily engages under acceleration. This helps to distribute power more evenly to both rear wheels when you are on the throttle, improving traction and allowing for a more confident exit from corners.

Does this differential come with all necessary installation hardware?

This listing is for the differential unit itself. It is recommended to consult the manufacturer's installation guide or a qualified mechanic to determine if any additional hardware or specialized tools are required for proper installation.

What type of gear oil should I use with this Cusco LSD?

It is important to use the specific type and weight of gear oil recommended by Cusco for this RS series differential. Using the incorrect fluid can affect performance and potentially damage the unit.

Specifications

Brand: Cusco
Part #: LSD 141 F
UPC: 4996338010582

Cusco LSD RS 1-Way Rear Mitsubishi Evo 7/8/9/10 CT9A Non -AYC

Name: Cusco LSD RS 1-Way Rear Mitsubishi Evo 7/8/9/10 CT9A Non -AYC
Brand: Cusco
SKU: cusco-cusco-lsd-rs-1-way-rear-mitsubishi-evo-7-8-9-10-ct9a-non-ayc-t14-278767
Price: 1420.80 USD
Availability: BackOrder

$1420.80

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Fits 2003-2005 Mitsubishi Lancer. Cusco 1-way rear LSD for non-AYC models, improving traction and cornering.

Key Features

Fits 2003-2005 Mitsubishi Lancer.
Cusco RS 1-way limited-slip differential for rear axle.
Designed for models without Active Yaw Control (AYC).
Features a unique clutch pack design for strong initial lock-up.
1-way engagement activates under acceleration to improve traction.
Helps put power down more evenly to both rear wheels during acceleration.

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About this part

Product Details

This Cusco RS 1-way limited-slip differential is built with a unique clutch pack design that offers a strong initial lock-up, making it a solid choice for your 2003-2005 Mitsubishi Lancer Evolution. It's specifically designed for models without Active Yaw Control (AYC), ensuring a direct and effective integration into your drivetrain. The 1-way action means it engages under acceleration, helping to put power down more evenly to both rear wheels when you're on the throttle, which can significantly improve corner exit speeds and overall traction, especially in performance driving situations.

The RS series from Cusco uses a combination of friction plates and springs to achieve its locking effect. This design allows for a predictable engagement that can be felt through the steering wheel, giving you more confidence when pushing the car. Unlike some other differentials, the RS series is known for its relatively smooth engagement, making it more manageable for daily driving while still providing a noticeable performance benefit when you need it. Installation involves removing the factory differential and replacing it with this unit, requiring proper setup and gear oil to function correctly.

When installing this differential, it's crucial to ensure all mating surfaces are clean and that the correct gear oil is used, as specified by Cusco. This unit is intended for Lancer Evolution models from 2003 to 2005 that do not have the factory AYC system. If your vehicle is equipped with AYC, this differential will not be compatible. Proper setup is key to maximizing its performance and longevity.