Steeda's Chrome Moly alloy steel rear lower trailing arms directly replace the stamped steel OE parts. These lightweight yet super strong 4130 chrome moly alloy arms reduce un-sprung weight, eliminate wheel hop, and are twice as strong as competitors basic mild steel arms.Steeda was first to market with trailing arms and had them on the shelves even before the S197 Mustang was released thanks to our exclusive technology transfer program with Ford Motor Company. Steeda was the first to incorporate the proper design rear offset for the rear lower trailing arms.Don't be fooled by other companies claiming to be first with this offset, yet they had their arms on the market months, if not years after we released ours! Steeda's exclusive bushing package also ensures smooth, quiet operation combined with performance. No increase in NVH (noise, vibration, harshness) like competitors arms. Don't settle for anything less than Steeda original innovation. Place your order today! Improves straight line and cornering traction Stops wheel hop Chrome Moly Steel Construction - twice as strong as competitors steel arms Lighter than stock and competitors arms reducing unsprung weightSteeda Control Arms Rear Lower 05-12 Mustang 555-4422 Rear Control Arms Lower Chromoly Polyurethane Bushings Ford Mustang (Set of 2)Pit Stop USAoffers Steeda Control Arms Rear Lower 05-12 Mustang 555-4422 at low everyday prices. Be sure to check out all of our products from Steeda including Steeda Lower Rear Control Arms.