Ultimate Differential Strengthening System Designed for 2008-2014 Subaru WRX/STI to address power loss during aggressive driving 【Perfect Fitment】This Billet Rear Differential Brace designed for Impreza WRX 2008-2014,WRX STI 2008-2014,for Forester 2013-2015,for Legacy 2000-2008 【Vibration Control】75A durometer urethane bushings absorb shock while maintaining alignment precision, outperforming rigid 90A competitors 【Drivetrain Lockdown】 CNC-machined 6061 aluminum reduces differential movement, converting more power to traction during hard acceleration 【All-Weather Durability】 Made of high quality materials to withstand harsh weather and environments 【Quick Installation】Can be replaced directly, and the installation process takes only a few minutes