Rogue Engineering - Rear Trailing Arm Bushings

The factory BMW RTABs (Rear Trailing Arm Bushings) are a very soft material to provide the quietest, most comfortable ride possible. Because of this, we have seen factory mounts require replacement in less than 50,000 miles and 3 years. On modified vehicles, expect them to require replacement sooner. The Rogue Engineering RTABs are available in a Street Compound, which is suited for daily drivers that see light track duty, and a harder Track Compound, which is designed for maximum performance at the race track. Are your bushings already shot? A simple test to determine if the stock rear trailing arm bushings require replacement is driving the vehicle in a straight line. While in gear, under full acceleration, does the car pull to one side? Additionally, under full, firm application of the brakes, does the car pull again? If you answered yes to either one, the bushings probably require replacement. Squeak, Squeak. What was that noise? A common downside of the urethane bushings over stock rubber ones was that they would typically develop noise over time (or even right away). These noises were from a combination of the harder material, inadequate lubrication (or none at all), and the contact with the factory steel mounting hat rubbing against the bushing. A new, exclusive feature now incorporated into the Rogue Engineering RTABs is our new machined "grease trap". You can see this "grease trap" (picture 1), which is the small area around the end of the aluminum pin. This allows for lubricant to be remain captive during the installation of the bushings (picture 2) instead of being scraped off by the factory steel mounting hat. Rogue Engineering is the only company on the market to introduce a novel solution such as this to reduce the noise without sacrificing the performance. RE's manufacturer has has offered a silicon based formula, to also keep the urethane bushings quiet. This formula costs more (approximately 1.3 oz. of silicon is used per bushing) but we feel that this is the best way to offer the best bushing on the market. Professional Installation Required Because the RTAB console removal is required, an alignment is recommended. For installation of the part itself, it is very straightforward, but requires some special tools. However, because of the unique design, installation of the bushings is much easier than factory bushings. Models Supported 1995-1999 BMW E36 M3 1999-2006 BMW E46 3-Series & M3 2003-2008 BMW E85/E86 Z4 & Z4M