Developed by Cusco’s engineers based on motorsports data and research, the Cusco Type RS (SPEC-F) mechanical LSD is recommended for the enthusiast street driver who occasions the race track. Increasing the responsiveness and overall balance of acceleration/declaration. Extremely high durability and reliability are derived from Cusco’s unique mechanism and manufacturing method.
The CUSCO Type RS (SPEC-F) LSD comes in both 1-way and 1.5-way options. A 1-way LSD is specifically suited for front wheel drive cars. It activates under acceleration, and acts as a true LSD when the throttle is off. A 1.5-way LSD activates under acceleration while the under steer under deceleration is less than a 2-way LSD. A 1.5-way is recommended for those who are struggling with under-steer.
All Cusco limited slip differentials have the option of adjusting the responsiveness and the locking characteristics of the LSD by the combination of each plate and its designation of how it is stacked. Cusco’s exclusive clutch plate grooves are cut radially enabling instant oil movement, thus improving efficiency and durability. The pressure ring contact surface is polished for an even and flat contact with the clutch plates. The exclusive Cusco Oil Through System enhances great oil circulation and supply to the necessary areas when used with the Cusco LSD Oil. This listing is for an option of a Front 1-WAY 45° LSD, or a 1.5-WAY 55° -15° LSD. Increase the driving experience for the Subaru Impreza WRX STI (VAB). We are continuously adding more products to our website, so if you can’t find the part listing for your car, please contact us for more information.