Ford uses a hydra bushing attach the front control arm in the 2005-2010 Mustang to the chassis. This fluid-filled design is great for smoothing out the bumps, but performance oriented drivers demand more, and they get it from Steeda. Here's everything you need to augment the performance of the soft factory hydra-bushings. Two levels of increased suspension control are available with this kit. Install your kit with the red 70 durometer bushings for a factory-quiet ride. Select the 88 durometer black set for even more precise handling, if you feel the slight increase in NVH is small price to pay. The choice is yours, as both sets of urethane bushings are shipped with every kit. Fits 2005, 2006, 2007, 2008, 2009, 2010, 2011 Mustang GT and V6 555-4006$124.95 www.realspeedauto.com Ph.631-563-7325 All parts listed are for the Ford Mustang unless otherwise noted. Copyright 2018 Realspeed Automotive Inc. All rights reserved.