Don't neglect your motor mounts! Most stock BMW motor mounts are fluid filled and the stiffness of the mount depends on this fluid. But over time the fluid leaks out and the strength of the mount is greatly reduced. A worn motor mount allows the engine to twist and shift around. The harder you're driving the more shift will occur. As the engine is moving around it can contact other parts in the engine bay - usually cooling related. The mechanical fan can hit the radiator; the A/C compressor can hit a radiator hose, the exhaust will flex and may break. Twisting of the engine can also lead to shifting problems as the transmission twists with it. There are countless issues related to worn or compressed motor mounts so don't overlook these as a regular replacement item (every 50,000 miles).
Powerflex is the number one selling suspension bushing manufacturer in Europe. Their experience with polyurethane bushing material and state-of-the art manufacturing techniques allows them to produce premium performance bushings, made to exact-fit standards. Powerflex performance polyurethane bushings are built to last longer than OEM rubber bushings, while improving performance and allowing for a more engaging driving experience. Powerflex is pleased to introduce their new N54, N55, and B58 Engine Mount Inserts, intermediate alternatives to the BMW aluminum inserts and much stiffer full replacement engine mounts available on the aftermarket. Made in Yellow 70A durometer material, they are designed to fit the OE mounts snuggly to restrict engine movement with a minimal increase in NVH, perfect for those with tuned road cars. Their design and flexibility also mean they can be fitted to the vehicle without removing the engine mounts themselves. Reducing engine/transmission movement by way of upgraded inserts has the following benefits: Sharper throttle response Improved gear shifting More direct power transfer More balanced on/off throttle handling Prolonged life of the OE mounts A small increase in NVH, usually at idle, should be expected when stiffening the connecting mount between the engine and chassis. The harder the material used, the greater the NVH transmitted.
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80A Durometer, perfect for street use with a slightly stiffer than OEM feel. (Black - OEM+) Revshift mounts are the most durable and reliable mounts on the market. To further ensure the strength of our mounts we form the threads with a forming tap which creates denser and stronger threads in the billet aluminum pieces. The polyurethane compounds that Revshift uses are among the best for automotive use and exceed the material quality of possibly all other automotive polyurethane manufacturers. Kit Includes: Two assembled motor mounts Heat sleeve for exhaust side mount Mounting hardware Blue 242 Loctite Installation instructions Replaces OEM part numbers 22116760330 and 22116773744 Located in Detroit, Revshift is a performance engineering and manufacturing company committed to providing the highest quality performance products available. Every part is designed, engineered, and tested in their Motor City location using high-precision CNC equipment. Additionally, all polyurethane bushings are spec'd, processed, and molded in their own facility for guaranteed quality, reliability, and performance!
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