News

BMW M2 CSL… Wait, what? Shouldn't the hotly-anticipated BMW M2 arrive in showrooms before everyone starts fantasizing about a potential lightweight CSL version? You'd think so, but that hasn't stopped the internet from jumping on the fast track to Rumorville. Although the options list seems to have been released, the...

2015 NASA Western States Championships - Strong Showing For BMWs And Diffsonline

It's been a long time in the works, but we're very proud to announce our 2015 Diffsonline NASA Championships Contingency Program. We've played an active role in helping to get Spec E46 off the ground, and the series has the most promise of any racing series in recent memory. The...

2015 Continental Tire Road Race Showcase at Road America The Continental Tire Road Race Showcase at Road America had a variety of action, including the qualifying session being rained out. That resulted in the starting grid being based on the season's standings. Not ideal for many teams, but it kept...

When it comes to learning, sometimes there’s no school like the old school. A surprising number of driving and motorsport enthusiasts are afraid to admit when they don’t fully understand the internal functionality of certain mechanical parts. The basics of how differentials work is a prime example; we do our...

Reduce friction, heat and driveline power losses with REM® isotropic polishing - mirror-smooth gears and bearing surfacesFrom our custom differential and transmission builds for championship-winning teams to our off-the-shelf solutions to get project cars up and running, Diffsonline is and always has been at the forefront of the latest innovations...

BMW Motorsport will bring the BMW M235i Racing to the U.S. if interest warrants When the images and information of the BMW M235i Racing started surfacing some time ago, North American customers made a history-based assumption that, as great as the car looked, there was no chance of it coming...