Racing Diffs BMW Progressive LSD

If you would like a LSD. for an automobile which does not have one already installed, you do not have to order new expensive ones. We offer *progressive LSD conversion sets for your existing factory open differential. If we do not have your make in stock we can fabricate one by special order. Conversion sets are made from high quality tool steel which is heat treated using argon gas specifications to achieve maximal precision. For all friction components we use the same materials as used in our LSD clutch sets. All parts are fabricated according to N7 quality standards.

We had lots of questions about what is the difference between our product and Phantom grip and answer is that this is completely different system. Here are some key points:
Phantom grip locks differential only by high rated springs, while our product has ramp angle on central channel where small gears axle passes through. That provides dynamic/progressive lock exactly the same as factory ZF lsd. When you press accelerator, large gear attends to spin the plate around pushing the ramp of central channel against axle increasing pressure several times more than pre-load.