BMW 3 Series F30, F31, F34, F80 Sedan / Touring / GT (2011 On)Front Radius Arm To Chassis Bush This is a replacement part that in our Black material is 200% stiffer than the original rubber bush to withstand increased loading seen by this position on the car. For a caster offset version please use PFF5-1901G. Bush Size: OEM Part Numbers: 31126855743, 31126855741 / 31126855742, Quantity: 2 Bush(es) / Required per Car = 2 Bush(es)Road Series Part Number = PFF5-1901Black Series Part Number = PFF5-1901BLKRoad EAN Reference Number: 5055676536693, Black EAN Reference Number: 5055676536709Diagram Reference = 1NOTES:-See above pictures and car diagrams as applicable.Road Series - For Road and fast Road use. Improve your cars’ road holding and chassis performance by controlling the amount of unwanted flex in the suspension. They offer Prolonged tyre life, Improved performance, Increased safety, Greater cost-effectiveness.Black Series- For Track and Motorsport use. Manufactured using Black 95 Shore A compound to provide maximum control of chassis geometry. They are designed for the Track, ready to Race and are engineered to be the best.Fitting Instructions: Road Series - Black Series