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Cusco LSD RS-1way Front for Subaru Impreza WRX STI GDB, GRB, GVB

The Cusco LSD RS-1way Front Limited Slip Differential is engineered for for Subaru Impreza WRX STI models including GDB, GRB, and GVB chassis with 6MT. This high-performance differential enhances traction by locking the front wheels under acceleration, improving power delivery and cornering stability without compromising smoothness on deceleration.

Featuring Cusco's Type-RS technology, it uses precision coil springs to provide a gentler initial torque engagement compared to conventional cone plate LSDs. This results in reduced clutch chatter, lower friction losses, and improved durability, making it ideal for both spirited street driving and competitive motorsport use.

  • 1-way LSD activates on acceleration only
  • Adjustable ramp angles between 35° and 45° for tuning
  • Type-RS spring technology for smooth engagement and reduced wear
  • High tensile forged chromoly gears and robust case design
  • Oil Through System for enhanced cooling and reliability
  • Designed specifically for 6MT Subaru Impreza WRX STI GDB, GRB, GVB
Make Model Year Type
Subaru Impreza 2004 WRX STI
Subaru Impreza 2005 WRX STI
Subaru Impreza 2006 WRX STI
Subaru Impreza 2007 WRX STI
Subaru Impreza 2007 WRX STI Limited
Cusco USA is a division of Carrosser Co. Ltd, which is based in Japan. Cusco USA is the headquarters for market research, product development, sales and distribution in the Americas. Our headquarters are located in Huntington Beach, California. Cusco's mission is to develop and deliver vehicle components that enhance the driver’s experience and ability to control a vehicle to the highest level. Consumers purchase their parts because our company was founded on this principle and still delivers it today. Cusco produces high-quality coil-overs, suspension parts, drive trains, strut tower bars, chassis bars and roll cages and different engine and body parts.
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