What is the difference between a 1.5-way and a 2-way limited slip differential?

A 1.5-way LSD primarily engages on acceleration and partially on deceleration, offering stability. A 2-way LSD engages on both acceleration and deceleration, providing maximum lock-up for aggressive driving. This Cusco RS unit allows you to choose between these settings.

What type of maintenance does this differential require?

Limited slip differentials require specific gear oil for proper operation and longevity. It is crucial to use the manufacturer-recommended fluid type and change it at regular intervals, especially after initial break-in and during hard use. Refer to Cusco's installation manual for detailed fluid specifications and maintenance schedules.

Does this LSD come with all necessary installation hardware?

The product listing typically includes the differential unit itself. Essential installation hardware such as bearings, seals, or specialized bolts may need to be purchased separately. It is highly recommended to consult the Cusco installation instructions or a professional mechanic to determine all required components for a complete installation.

Specifications

Brand: Cusco
Part #: LSD 141 L15
UPC: 4996338012913

Cusco LSD RS-1.5way(1.5&2) Rear CT9A Evo7 8 9 & 10 Non-AYC

Name: Cusco LSD RS-1.5way(1.5&2) Rear CT9A Evo7 8 9 & 10 Non-AYC
Brand: Cusco
SKU: cusco-cusco-lsd-rs-1-5way-1-5-2-rear-ct9a-evo7-8-9-10-non-ayc-t14-249214
Price: 1420.80 USD
Availability: InStock

$1420.80

Only 3 left in stock

Cusco RS 1.5-way rear LSD for Mitsubishi Lancer Evolution 7-10 (Non-AYC). Improves traction and handling.

Key Features

Fits Mitsubishi Lancer Evolution 7, 8, 9, and 10 models without Active Yaw Control (Non-AYC).
Cusco RS series limited slip differential for rear axle.
Adjustable cam mechanism allows for 1.5-way or 2-way locking settings.
Improves traction and handling during acceleration and cornering.
Well-made internal components designed for performance driving.
Designed to reduce wheelspin and enhance power delivery out of turns.

This differential is specifically designed for Mitsubishi Lancer Evolution 7, 8, 9, and 10 models that are NOT equipped with the Active Yaw Control (AYC) system. Please verify your vehicle's configuration before purchase.

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About this part

Product Details

Cusco is well-known for making high-performance drivetrain components, and their RS series limited slip differential is a prime example of their expertise. This particular unit is designed for the rear of Mitsubishi Lancer Evolution models 7, 8, 9, and 10, specifically those without Active Yaw Control (AYC). If you're looking to significantly improve your Evo's traction and handling, especially during spirited driving or track use, a limited slip differential like this one is a critical upgrade.

The RS model features a unique cam mechanism that allows for adjustable locking characteristics. It can be set to operate as a 1.5-way or a 2-way differential, giving you the flexibility to tune its behavior to your driving style and track conditions. A 1.5-way differential engages on acceleration and partially on deceleration, providing a stable feel during corner entry and exit. A 2-way differential engages on both acceleration and deceleration, offering maximum lock-up for aggressive driving. This adjustability means you can fine-tune how the differential distributes power between the rear wheels, reducing wheelspin and improving the car's ability to put power down out of corners. The internal components are well-made to handle the stresses of performance driving.

Installing a limited slip differential is a significant modification that requires specialized knowledge and tools. It's recommended to have this unit installed by a professional mechanic experienced with performance drivetrain components. Proper installation and fluid maintenance are key to ensuring the longevity and optimal performance of the LSD. This differential is designed to work with non-AYC equipped vehicles, so ensure your Evo does not have the AYC system before purchasing.