What We Do
Whether you're looking to alter the final drive gear ratio, or add limited-slip functionality to get all that power to the ground in the turns, we've got the knowledge to guide you in the right direction.
Whether you demand performance on the street or the track, Diffsonline can provide you with a performance differential to suit your exact needs. Every differential is built to your exact specifications in our shop, and shipped to your door.
Looking for parts to fix your worn or broken differential, we have them! If you don't see exactly what you want or need, email us and we will get you up and running again.
We offer transmissions for street and race applicatons.
All you need to refresh all bearings and seals for your BMW differential.
REM® Bearing Polishing and REM® Ring & Pinion Polishing reduces friction, heat, and wear inside your differential.