What is a 1.5-way LSD and how does it differ from a 1-way or 2-way?

A 1.5-way LSD engages strongly during acceleration, helping to lock the rear wheels together. It also provides a partial lock during deceleration. This offers a good balance between traction on throttle and predictable handling when off-throttle, compared to a 1-way (only locks on throttle) or a 2-way (locks equally on throttle and deceleration).

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

Using the correct gear oil is crucial for the performance and longevity of your LSD. Refer to the Cusco installation manual or their official recommendations for the specific type and viscosity of gear oil required for this LSD model.

Is this LSD a direct bolt-on replacement for the factory differential?

While designed to fit the specific chassis, installing a limited slip differential is a complex drivetrain job. It typically requires removal of the rear axle and associated components, and may involve specialized tools and procedures. It is recommended to have this installed by a qualified mechanic experienced with differential work.

Specifications

Brand: Cusco
Part #: LSD 141 K15
UPC: 4996338012890

Cusco LSD MZ CD-CT9A, Rear,1.5Way (1.5 & 2W)

Name: Cusco LSD MZ CD-CT9A, Rear,1.5Way (1.5 & 2W)
Brand: Cusco
SKU: cusco-cusco-lsd-mz-cd-ct9a-rear-1-5way-1-5-2w-t14-4313006
Price: 1420.80 USD
Availability: BackOrder

$1420.80

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Cusco Rear 1.5-Way LSD for Mitsubishi Lancer Evolution VII-IX.

Key Features

Fits Mitsubishi Lancer Evolution VII, VIII, and IX.
Cusco 1.5-Way Limited Slip Differential for the rear axle.
Helps improve traction and handling by distributing power between rear wheels.
1.5-way engagement provides strong locking action during acceleration.
Designed for performance driving and track use.
Part number LSD 141 K15.

This Cusco LSD is designed for the rear axle of Mitsubishi Lancer Evolution VII, VIII, and IX models. Please verify fitment with your specific vehicle before purchase.

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About this part

Product Details

This is a Cusco 1.5-Way Limited Slip Differential (LSD) for the rear of your Mitsubishi Lancer Evolution VII, VIII, or IX. If you're looking to improve traction and handling, especially during spirited driving or track use, an LSD is a key component. It helps distribute power more evenly between your rear wheels, preventing one wheel from spinning freely while the other has grip. This particular unit is a 1.5-way type, meaning it engages more aggressively during acceleration than deceleration, offering a good balance for performance driving.

Cusco is well-known for its performance drivetrain parts, and this LSD is built with their expertise in mind. It's designed to handle the demands of performance driving, providing a noticeable improvement in how your car puts power down out of corners. The 1.5-way engagement means you get strong locking action when you're on the throttle, which helps rotate the car and maintain stability. When you let off the gas or brake, it still offers some locking effect, but less so than a 2-way differential, making it more predictable for daily driving or less aggressive track use. This unit is specifically designed for the Lancer Evolution VII-IX chassis, ensuring a proper fit and integration with your existing drivetrain components.

Installing a differential like this is a significant upgrade and typically requires specialized tools and knowledge. It's a job best left to experienced mechanics or those familiar with drivetrain work. Ensure you have the correct gear oil specified by Cusco for this differential, as using the wrong type can affect its performance and longevity. This LSD is a solid choice for Evo owners looking to enhance their car's handling characteristics and put power down more effectively.