Quaife ATB is the best street & trackday limited slip differential available. The Quaife is silent, reliable and comes with a lifetime warranty. Works like a charm on a daily and if necessary transforms it into a track monster. BMW and Mercedes Quaife differentials are also listed.
Limited slip differentials, Page 1
Cusco limited slip differentials for professional motorsport use. These are definitely not the cheapest, but are top quality products which are also fully serviceable.
Kaaz limited slip differentials are proven and popular choice for drifters, competition cars as well as road racers. Kaaz is simply a very good differential.
British Gripper differentials are a popular unit for all types of copetition cars. Gripper limited slip differentials are also completely serviceable.
Gripper plate type differential service kits. These kits include shims and clutch plates needed to rebuild your Gripper differential.