PART #25210 DOWNLOAD INSTALLATION INSTRUCTIONS FEATURES: Improves Traction for Better Launch and Handling Durable Polyurethane Bushings Black Powder Coat Finish Easy Bolt-On Installation VEHICLE FITMENT: 1999-2004 Ford Mustang Does Not Fit IRS Cobra Models Bolt On Better Traction The 1999-2004 Ford Mustang BBK Gripp Lower Rear Control Arm Kit eliminates deflection for firmer launches and much improved handling characteristics. These control arms eliminate deflection in 2 ways. The strong boxed steel tubing is much less flexible than the bent sheet steel factory control arms and polyurethane bushings are a higher durometer (stiffer), which cuts down on bushing deflection. Durable Construction BBK Mustang rear control arms (trailing arms) have many features, including precision robotic welding, baked on powder coat finish polyurethane bushings and Zerc fittings for easy servicing. Easy Installation The BBK Gripp lower and upper control arms bolt in using your factory hardware. Most home mechanics with a basic set of tools can accomplish the swap in approx. 2-3 hours