Subframe Bushings

Tasked with keeping the vehicles rear end firmly mounted while absorbing noise, vibration, and harshness (NVH) factory rubber subframe bushings were engineered to provide a balance of control while keeping the ride quality soft and supple. As a factory bushings age, they become brittle and begin to harden. When this happens the bushing will actually shrink and allow excess play, or movement in the subframe. This is typically felt by a sudden jerk or "thunking" noise under acceleration and is a leading cause of "sloppy" or "loose" suspension feel. These poly inserts provide the inherent benefit of stiffness, which translates body forces much more directly. This means steering and acceleration inputs from the driver are effectively transferred to the wheels and vital road information is transmitted properly from the wheels to the driver. 

Powerflex street bushings are ideal for street driven vehicles and those that see occasional autocross or track time. Need bushings for a dedicated track car? Engineered to perform, Powerflex performance polyurethane bushings offer a supreme level of control, while still providing enough comfort for the street, with advanced polyurethane that reduces NVH that often accompanies lesser bushings. Expect improved steering feel, turn in, more responsive handling and overall improved chassis composure with Powerflex performance polyurethane control arm bushings.

Poweflex is a leading manufacturer of aftermarket suspension bushings. Using state of the art design and manufacturing, all replacement bushings are engineered to out-perform and out-last the ones that came in the car. Each line of bushings is meticulously tested and then re-tested to ensure perfect fitment and enduring quality through the life of the vehicle. A full lifetime warranty backs every one of their products and demonstrates the level of confidence and commitment Powerflex has to their customers. 

TMS E36 solid sub-frame bushings are designed for track and racecars to remove twisting and flexing of the subframe where it mounts to the rear floor. This twisting is one of the causes of rear subframe/floor failure in E36 cars. We originally developed these for our SCCA SPEED World Challenge cars. A BMW's subframe is the heart of the suspension. Because the subframe is mounted with rubber isolators, when the subframe moves, so does the rest of the suspension mounting points. As the rubber wears and becomes more pliable, the alignment and suspension settings move even more. Replace the stock rubber bushings to limit drivetrain and suspension movement and keep your car set up the way it's supposed to be.

Our mounts are designed using a CAD program with further attention paid to making the mount as light as possible. We also notched the flanges to allow the use of the BMW factory removal tools. One front bushing is slotted to allow for compliance between manufacturing standards as BMW specifies. These bushings are CNC machined out of high grade billet aluminum.

Click for installation instructions. (PDF)