Installation Time: Afternoon
March 11, 2013
Expensive but well worth it
These are a direct replacement for the stock lower control arms on the 2005-2014 Ford Mustang. The stock lower control arms are stamped steel with NVH dampeners riveted near the bushings. The stock arms on the 05-09 actually weighed 2963 grams per arm, while the Steeda Billet arms weighed 1635 grams per arm, a weight savings of 2.93 pounds per arm! The stock stamped steel arms look more boxed on the 2010-2014 Mustangs, but they still tend to flex, hence the need for an aftermarket arm with stiffer bushings.
The installation is straightforward. Remove the rear tires, disconnect the parking brake cables, remove the 2 bolts from the stock arms, making sure you remember the position of the flag nylock-nuts, and install the new arms. Use plenty of grease on the bushings, and keep the steel washer on the chassis mount facing the outside of each arm. The thicker aluminum spacer on the axle mount faces the differential. So the end result is that the Steeda logo faces out. Start with the front mount and slide the bolt through the bushing. Push the rear of the arm up into the axle mount. At this point, the bolt hole will not be aligned. I used a screw driver and drill bit to align the bolt hole in order to slide the bolt through. Then use blue threadlocker and torque the bolts to 129 ft-lb. Route the parking brake cable through the slots and re-connect.
The material is 6061-T6 aluminum. The bushings are polyurethane. Steeda includes zip ties and Energy Suspension Formula 5 pre-lube, but I didn’t use either. I routed the parking brake cable like with the stock arms, since there seemed to be enough slack. I used Sil Glyde BK4 (brake) grease because it is slicker and more durable than the Formula 5.
Overall: 4/5 stars, expensive but I like the bushing design. These shave some weight from the stock arms. The alternative is chrome-moly tubular arms that weigh even less, but I did not like the bushing designs on those arms.