FK Auto is one of the larger manufacturers of German engineered aftermarket parts and their products are designed to enhance Audis, BMWs or VWs. All their products are made in and shipped from Germany, to ensure consistent build quality in accordance with their TUV approval. For the BMW E39 M5, FK Automotive has the EDC-compatible [...]

Here’s a video of two BMW E39 M5s showing the effect of a 3.62 rear diff ratio versus a E39 M5 with the stock 3.15 diff ratio. Both cars have exhaust mods which the poster says are equivalent, with his car having a cat-back exhaust and Magnaflow mufflers. You will see from the video that [...]

Time was when accessory manufacturers could claim horsepower increases left and right and all modders could do was use a stopwatch to check if the claims could be verified. But this method is not very reliable as a lot of variables can vary the results between test runs. The advent of the dyno has taken [...]

This is a European site that features a set of front fog lights for the E39 M5. The web site Jom.de lists these left and right fog lights which are oval shaped just like the OEM units. These front fog lights are available in a clear design, just like stock and are a common wear [...]

Make your E39 M5 stand out from the rest by using these Putco LED dome light replacements. They look cool at night. They have a universal design to fit all cars, trucks, and SUV’s. These should install quickly and easily with the adaptable connector. In fact, it fits mosts bulb sockets with no wiring required [...]