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The OS Giken limited slip clutch type differential is simply the best on the market. Unlike some other diff's on the market, this is designed as racing equipment, utterly bombproof even with big boosted horsepower and Hoosiers

The uniquely tuned "lock timing" allows the diff to run looser until torque is applied. This feature give the diff a super smooth takeup when exiting corners. Datalogs show it accelerating harder than a Torsen or modified OEM clutch type under 1G+ cornering.

Fully rebuildable at authorized service centers all over the world

Fully tuneable, can even be set up as a full 1 way or 2 way 

Default tuning is ideal for road racing with high grip tires but many top autocrossers run it out of the box also