Limited Slip Diff.

RX-8MSE660

Car model: RX-8
Model: SE3P
price:
Selling price$875.00

Product information

*It may not be possible to install it depending on the grade and year even if it is the same car model. Additionally, additional parts may be required for installation. Please be sure to check here for detailed compatibility.

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The mechanical (multi-disc clutch) limited slip differential, which distributes and transmits effective traction to the left and right drive wheels when cornering or on slippery roads, is based on the proven CUSCO product and offers ease of use and comfort. Considerate AutoExe original settings have been applied. The operating method is 1.5 way. The direct operating feel compared to mass-produced products is appealing. >>More details

<Main specifications>・Mechanical 1.5way cam angle 35°・Torque bias ratio: 4.0 to 6.0・Specified LSD oil included.

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AutoExe original setting. Mechanical type with street best specifications.

The mechanical (multi-disc clutch) limited slip differential, which distributes and transmits effective traction to the left and right drive wheels when cornering or on slippery roads, is based on the proven CUSCO product and is designed with consideration for ease of use and comfort. The original AutoExe settings were applied.
The operating system is 1.5-way, which applies 100% when the accelerator is ON and 50% when the accelerator is OFF. Set the drive side cam angle to 35 to 45° and the torque bias ratio to 4.0 to 6.0 on the drive side. The initial torque is 40.8 to 51.0N-m, providing a direct operating feel and reliable traction. This item highlights the handling typical of an FR vehicle. In addition, in consideration of street driving, the specifications have been designed to suppress chattering (metallic sound when the clutch plate slips) as much as possible. The specified LSD oil is included with the product.


The following is an overview of its "aims" and "techniques." Since the differential exists like a black box, it is difficult for most readers to imagine its mechanism, but if you are thinking about tuning a differential, it is better to understand the basics. This is because usability varies greatly depending on the design intent.

First of all, some basic knowledge. A differential is originally a device that changes the rotational speed of the outer and inner wheels that drive the vehicle when it turns. This is because when turning at a certain angle as shown in the figure, the radii of the trajectories drawn by the inner and outer rings are different. Naturally, the outer ring must travel a longer distance than the inner ring, and must rotate faster. Otherwise (at the same rotation speed), the inner wheels will slip and have to consume too much rotation, making it impossible to turn smoothly. In short, a differential is a mechanism that provides a rotational difference to the drive wheels. Therefore, it is also translated as "differential device" in Japanese.
Of course, there is no need for a differential when driving straight, and it would be a problem to use a differential. This is because if there is a difference in rotation between the drive wheels, the direction of travel will change. So how does the differential recognize when it's turning? The basis for this judgment is the resistance from the road surface.

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