Improves Clutch Pedal Feel. A SR Performance 90 lb. Clutch Assist Spring will make banging through the gears of your manually equipped 2011-2014 Mustang much easier as it replaces the factory 200 lb/in clutch assist spring. This SR Performance 90 lb. Clutch Assist Spring will give your clutch a more linear feel for better response.Heavy Duty Construction. SR Performance manufactures their Clutch Assist Spring from high tensile strength spring steel for its superior strength and elastic qualities. Even after miles of repeated use, this Clutch Assist Spring will maintain a consistent spring rate.Straight Forward Installation. SR Performance designed their Clutch Assist Spring to be a direct fit upgrade replacement for the original factory spring. With just a pair of needle nose channel locks, this Clutch Assist Spring can be installed in about 15 to 30 minutes.Application. This SR Performance 90 lb. Clutch Assist Spring is designed to fit 2011-2014 V6 and GT models equipped with a manual transmission.