well-balanced machine that is designed for the street but is formidable at the race track as well was still designed conservatively. But for those who push the limits and take every ounce of potential from their vehicles, the stock power and handling needs the ability to be fine tuned to perfection. Megan Racing has developed our Trailing Arms for the BMW. Constructed of a Lightweight yet strong Steel-Alloy, they are perfectly suited for competition purposes that can withstand the extremes of track-driving while still being suitable for the daily driver. These trailing arms allow the adjustment of Caster in the rear wheels which can drastically effect the responsiveness of the car during hard cornering or drifting. The Pillow ball ends replace the OEM soft-rubber bushings which absorb too much energy that is then wasted... the result is a more direct feel with no energy lost in the suspension system. SPECIFICATIONS & FEATURES: -BMW 3 Series F30 2012+ - High-Strength Steel Alloy - 3-Stage Powder-coating Process Adjustment. - Self-Lubricating Pillow-ball End-Links