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AST Spherical Rear Shock Mounts (RSM)
Some people are afraid to run spherical mounts at the rear shock mount locations of their BMWs. If you're running camber plates up front, you already are running sphericals! The important part of spherical mounts is that they are sized appropriately, they fit the shaft they are attached to properly, and they allow proper articulation at the rear shock mounting point. Rubber allows the proper articulation as well, but with added deformation you don't have with a spherical. Polyurethane RSMs do not articulate, and cause bind and unnecessary flexing of the rear shock mounts (which are prone to breakage when poly mounts are used). These AST spherical RSMs do the job and do it well.
These rear shock mounts are designed to work with our AST coilover kit rear shocks with AST 14mm diameter main shafts that have a 10mm/M10 threaded upper shaft. The mounting holes for the shock mount itself are made to fit the E30, E36 and E46 chassis. Please contact us about using these on other rear shock brands (some of which have thicker or thinner rear shock shafts).
Spherical RSMs are great on dual-purpose street and track cars, or pure street cars with other track-worthy suspension mods. We have them on our daily driver E36 M3 that annually gets 10K street miles and is used in dozens of competition events a year. Silent, effective, no slop, no bind.
Shipping weight 2.2 pounds.
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