Across BMW's E21, E23, E24 and E28 chassis, the factory center support bearing carrier holds the driveshaft with a thin layer of rubber. That rubber keeps noise out of the cabin, but per JXB Performance it can start to crack in as little as 5 to 10 years even on a well kept car, letting the bearing sag out of alignment and introducing slack into the driveline under hard acceleration or quick shifts. This JXB Performance driveshaft carrier replaces the factory piece with a solid two-piece clamp that keeps the driveshaft centered at all times. It clamps directly around the vehicle's existing, unserviceable center support bearing, so the driveshaft never has to come out of the car, be disassembled, or be rebalanced. JXB's own install video for this part was filmed on an E28 5 Series. Street vs Track Bushings Every carrier ships with a choice of bushing durometer. Street bushings are the softer option and JXB's recommendation for any car that is not purpose-built for track or overland use, since they do the best job keeping drivetrain noise and vibration out of the cabin. Track bushings run roughly twice the durometer of Street for the most direct feel under load. Both are many times stiffer than the factory rubber and both typically run silent and vibration-free; a combined option supplies a full set of each so you can compare and settle on a favorite. What's Included JXB Performance two-piece driveshaft carrier (x1) Street bushings, Track bushings, or a full set of each, depending on the option selected All carrier mounting hardware Reused from your vehicle: the factory center support bearing. The new carrier clamps around it rather than replacing it. Required but not included: a cutting tool to remove the factory carrier. Installation Notes The old carrier is cut away from the factory bearing and the rubber support material is pared back with a razor blade, leaving the base layer of molded-on rubber intact on the bearing. The new two-piece carrier then clamps directly around it. Nearby braces, splash shields, exhaust sections, and heat shielding around the center support bearing typically need to move for access first. Product Specifications Manufacturer: JXB Performance SKU (Street): J023 BMW10A0-S — MPN: BMW10A0-S SKU (Track): J023 BMW10A0-T — MPN: BMW10A0-T SKU (Both): J023 BMW10A0-B — MPN: BMW10A0-B Fits: across BMW's E21, E23, E24 and E28 chassis Need a Different Carrier? E30 (series 2), E32 and E34 carrier — for the next generation E30 (series 1) carrier Frequently Asked Questions Which chassis does this cover?This carrier fits the E21 3 Series, E23 7 Series, E24 6 Series, and E28 5 Series. Do I need to remove the driveshaft to install this?No. The carrier clamps around the existing center support bearing in place, so the driveshaft stays in the car. Which bushing option should I pick?Street suits nearly every daily driven car and is JXB's general recommendation. Track runs roughly twice the durometer for the most direct feel. Is any special tool required?A cutting tool is needed to remove the factory carrier from the OEM bearing before the new one clamps on. Still not sure this is the right part for your car?contact your BMP Tuning rep before ordering.