What is the difference between a 1-way and 1.5-way LSD?

A 1-way LSD primarily engages during acceleration, helping to lock the differential and send power to both wheels when you're on the throttle. A 1.5-way LSD engages during acceleration and also offers some engagement during deceleration, providing a more balanced feel for cornering.

What type of fluid should I use with this Cusco LSD?

It is crucial to use the specific differential fluid recommended by Cusco for this Type RS LSD. Using the correct fluid is essential for proper break-in and to ensure the longevity and consistent performance of the clutch plates.

Does this LSD come with all the necessary hardware for installation?

This listing is for the Cusco LSD unit itself. Installation typically requires additional components such as differential fluid, and potentially new seals or bearings depending on the condition of your existing differential housing. Always refer to the manufacturer's installation instructions for a complete list of required parts and procedures.

Specifications

Brand: Cusco
Part #: LSD 120 F
UPC: 4996338010780

Cusco LSD Type RS 1 & 1.5 Way Rear for 9/89-9/93 Mazda MX-5 (NA6CE)

Name: Cusco LSD Type RS 1 & 1.5 Way Rear for 9/89-9/93 Mazda MX-5 (NA6CE)
Brand: Cusco
SKU: cusco-cusco-lsd-type-rs-1-1-5-way-rear-for-9-89-9-93-mazda-mx-5-na6ce-t14-252679
Price: 1296.00 USD
Availability: BackOrder

$1296.00

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Cusco LSD Type RS 1 & 1.5 Way Rear for 9/89-9/93 Mazda MX-5 (NA6CE). Improves traction and handling during spirited driving.

Key Features

Fits 9/89-9/93 Mazda MX-5 (NA6CE).
Cusco Type RS clutch-type limited-slip differential.
Offers 1-way engagement during deceleration and 1.5-way engagement during acceleration.
Designed to improve traction and handling during spirited driving and track use.
Well-built clutch plates and springs for consistent performance.
Durable internal components built to handle performance driving stresses.

This Cusco LSD is specifically designed for the 9/89-9/93 Mazda MX-5 (NA6CE). Please verify fitment for your specific vehicle.

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About this part

Product Details

If you're looking to get the most out of your 1989-1993 Mazda MX-5 (NA6CE) during track days or spirited canyon carving, a limited-slip differential (LSD) can make a significant difference. This Cusco Type RS LSD is designed to replace your factory open differential, allowing both rear wheels to receive power more evenly, especially when cornering. This means improved traction out of turns and a more predictable feel when you're pushing the car's limits.

The Type RS is a clutch-type LSD that offers a unique 1-way and 1.5-way operation. In simple terms, it engages more aggressively under acceleration (1.5-way) to maximize grip, but it also offers a smoother, more manageable engagement during deceleration (1-way). This balance is key for a car like the MX-5, where precise control is crucial. Cusco uses well-built clutch plates and springs to ensure consistent performance. The internal components are designed for durability, and the unit itself is built to handle the stresses of performance driving. Installation involves removing the rear differential and replacing the factory unit with this Cusco LSD, which requires some mechanical expertise and specific tools.

When installing this LSD, it's important to use the correct differential fluid recommended by Cusco, as this helps ensure proper break-in and long-term performance. You'll also want to follow the manufacturer's break-in procedure, which typically involves a series of gentle acceleration and deceleration cycles. This process seats the clutch plates correctly, leading to smoother operation and extended life for the differential.