aFe Control PFADT Series rear trailing arms utilized the latest FEA analysis software to increase strength while simultaneously reducing mass. This decrease in mass allows the suspension to react quicker to changing road surfaces and keeping the tire in contact with the road, increasing traction. The design also achieves a decrease in deflection and wheel hop, which increases traction even further. aFe Control PFADT Series rear trailing arms feature laser-cut, 14-gauge 304 stainless steel plate construction, TIG welded in an I-beam configuration for added strength and rigidity. They are intended as a direct-fit application with no vehicle modifications necessary, and lightweight, hard anodized 6061 T-6 aluminum sleeves, specially grooved, graphite impregnated bushings, and zerk fittings for superior grease retention along with a quiet, comfortable ride suitable for street or track use.