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Diffsonline is involved in motorsports at all levels from High Performance Drivers Events to entry level amateur racing to full professional race teams. For their products to be the best, they must test them in the most rigorous fashions. This can only be accomplished safely on a race track. Their BMW differentials are proven week after week under some of the harshest conditions cars will ever see. They participate regularly in High Speed Driving Events, as well as supply countless cars with differentials that will hold up to the high demands of the track. Diffsonline has also built some custom BMW differentials to hold up to the unique demands of the latest automotive craze... drifting. Diffsonline is involved at the professional level of racing, they supply BMW differentials for teams where the ultimate in performance and reliability is a must. Their differentials can be found under cars in most every major professional GT and Touring Car series in the US. Diffsonline is also heavily involved in supplying many top club racers around the country with trick differentials to help them stay ahead of the competition in many sanctioning bodies including BMWCCA, SCCA, and NASA.

Engine & Drivetrain

Shop the parts you need to improve or maintain your BMW engine here. At Bavarian Autosport, we stock products for the cooling and fuel systems, transmission and clutch assemblies, to all of the filters, belts, and fluids that your MINI or BMW will ever need. Click the categories below to browse our complete catalog of both OEM and aftermarket parts for your vehicle.

For more than four decades, Bavarian Autosport has been helping BMW and MINI enthusiasts maintain, repair, and upgrade their vehicles while saving thousands of dollars in shop fees. Throughout our history it has been our mission to give every Mini or BMW owner the resources to take on nearly any repair or maintenance task themselves. With more than 100 DIY videos and free tech help available on our site, there is no job that is too big. We have a full team of advisers ready to answer your technical questions and help you find the right part for your Mini or BMW by phone or email. And if you aren't 100% satisfied with your purchase, returns are easy and hassle-free.

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