What is the main benefit of a 1-way LSD for gymkhana?

A 1-way LSD, like this Cusco Type RS, primarily engages during acceleration. This helps put power down more effectively to both rear wheels, reducing wheelspin and improving traction out of corners, which is crucial for gymkhana driving.

What is 'high initial torque' and why is it important?

High initial torque means there's a baseline amount of locking force between the rear wheels even when you're not accelerating. This makes the differential more responsive and can improve stability during transitions and braking.

What else might I need to install this differential?

When installing this differential, you will typically need to transfer the ring gear from your old differential. It's also recommended to use new differential fluid specifically designed for LSDs and consider replacing axle seals.

Specifications

Brand: Cusco
Part #: LSD 182 FG
UPC: 4996338011893

Cusco LSD Type RS 1-Way 55 Degree Cam Only REAR Gymkhana/High Initial Spec 01-13 Subaru GDB/GRB STi

Name: Cusco LSD Type RS 1-Way 55 Degree Cam Only REAR Gymkhana/High Initial Spec 01-13 Subaru GDB/GRB STi
Brand: Cusco
SKU: cusco-cusco-lsd-type-rs-1-way-55-degree-cam-only-rear-gymkhana-high-initial-spec-t14-102310
Price: 1420.80 USD
Availability: BackOrder

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Fits 2004-2007 Subaru Impreza. Cusco Type RS 1-way rear LSD for gymkhana and high initial torque.

Key Features

Fits 2004-2007 Subaru Impreza.
Cusco Type RS 1-way limited-slip differential for the rear axle.
Features a 55-degree cam angle for engagement during acceleration.
Designed for gymkhana and high initial torque applications.
Helps improve traction and control during acceleration and cornering.
Engages primarily under acceleration for predictable handling.

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About this part

Product Details

Cusco is well-known for making performance drivetrain parts, especially for Subaru vehicles. This Type RS 1-way limited-slip differential (LSD) is built for the rear of your 2004-2007 Subaru Impreza, specifically for applications like gymkhana or when you need high initial torque. It’s designed to change how your car handles power delivery to the rear wheels, giving you more control during spirited driving and cornering.

The Type RS uses a 1-way cam system with a 55-degree angle. This means it engages the limited-slip action primarily during acceleration, helping to put power down more effectively and reduce wheelspin. When you lift off the throttle, it disengages, allowing for more predictable handling. This design is popular for its balance between traction on acceleration and a more neutral feel when braking or coasting. The high initial torque setting means there's a baseline amount of locking force even when you're not accelerating, which can improve responsiveness and stability.

This differential is a significant upgrade for performance driving. It's designed to fit directly into the rear axle of your Impreza, replacing the factory open or limited-slip differential. For installation, you'll typically need to remove the rear axle assembly and transfer the ring gear from your old differential to this new one. It’s recommended to have this professionally installed by a mechanic experienced with drivetrain components to ensure proper setup and function. You will also need new differential fluid and potentially new axle seals.