Improves Traction. Replace those weak stamped steel factory control arms on your 1979-2004 Mustang with a SR Performance Complete Rear Control Arm Kit to significantly improve traction for quicker launches and to reduce annoying wheel hop under heavy acceleration or braking.Correct Bushing Sleeves. This SR Performance Rear Control Arm Kit comes complete with sleeves for bushings for both the 1979-1998 and 1999-2004 model year Mustangs. The sleeves are easy to install, just choose the correct sleeves for your model year and insert them into the control arms with the supplied lubricant, its that simple.Quality Construction. Manufactured from tubular DOM steel for superior strength to reduce control arm flex, these SR Performance upper and lower control arms are completed in a durable gloss black powder coated finish for long lasting corrosion resistance.Application. This Black SR Performance Rear Control Arm Kit comes complete with two upper and two lower control arms and are designed to fit on all 1979 to 2004 solid axle Mustangs, including the V6, GT, Bullitt, Mach 1 and 1994-1998 SVT Cobra. Does not fit 1999-2004 IRS equipped Cobras.