What is the difference between a 1.5-way and a 2-way LSD?

A 1.5-way LSD locks fully during acceleration and partially locks during deceleration. A 2-way LSD locks fully during both acceleration and deceleration. The 1.5-way offers more stability on deceleration.

Does this LSD come with all necessary installation hardware?

This listing is for the Cusco RS 1.5-way limited slip differential unit itself. It is designed as a direct replacement for your factory open differential. You will need to procure the correct differential fluid and potentially other associated seals or gaskets as part of the installation process, which should be detailed in the manufacturer's installation instructions.

What is the break-in procedure for this differential?

Cusco recommends a specific break-in procedure for their RS LSD units to ensure proper mating of the clutch plates and optimal performance. It typically involves a period of gentle driving with varied throttle inputs and avoiding hard acceleration or deceleration, followed by a fluid change. Always refer to the manufacturer's installation manual for the exact steps.

Specifications

Brand: Cusco
Part #: LSD 162 L15
UPC: 4996338013682

Cusco LSD RS-1.5way(1.5&2) Rear S13/S14 240SX-For U.S. open dif. only

Name: Cusco LSD RS-1.5way(1.5&2) Rear S13/S14 240SX-For U.S. open dif. only
Brand: Cusco
SKU: cusco-cusco-lsd-rs-1-5way-1-5-2-rear-s13-s14-240sx-for-u-s-open-dif-only-t14-249302
Price: 1536.00 USD
Availability: BackOrder

$1536.00

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Fits 1989-1998 Nissan 240SX. Cusco RS 1.5-way rear LSD for U.S. open diff models, improving traction and cornering.

Key Features

Fits 1989-1998 Nissan 240SX.
Cusco RS 1.5-way limited slip differential.
Designed for U.S. market open differential models.
Features a unique clutch plate design for improved engagement.
Provides 1.5-way locking action: full lock on acceleration, partial lock on deceleration.
Helps reduce wheel spin and improve traction during acceleration and cornering.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

The Cusco RS 1.5-way limited slip differential (LSD) is built with a unique clutch plate design that offers a distinct engagement feel, making it a popular choice for enthusiasts looking to improve their S13 and S14 Nissan 240SX's traction and handling. This unit is specifically designed to replace the factory open differential in U.S. models, providing a significant upgrade in how power is delivered to the rear wheels, especially during spirited driving or track use.

This RS model features a 1.5-way activation, meaning it locks up under acceleration for maximum traction, and partially locks under deceleration. This partial lock on deceleration helps stabilize the rear end during corner entry and exit, offering a more predictable and controlled feel compared to a 2-way LSD which locks fully on both acceleration and deceleration. The internal clutch plates are well-made and designed for consistent performance, helping to reduce wheel spin and improve acceleration out of turns. Installation involves removing the factory differential and installing this unit, requiring proper gear oil and setup to ensure optimal function and longevity.

This Cusco LSD is designed to work with the factory open differential housing. It's important to note that proper installation and break-in procedures, as recommended by Cusco, should be followed to ensure the longevity and performance of the differential. This upgrade is a substantial change from the stock open diff, offering improved grip and a more engaging driving experience for your 1989-1998 Nissan 240SX.