I think the question is why would you want to replace the already great stock diffs.

 

stasis makes some good diff for our cars
http://stasisengineering.com/audi_a4_b5_diff.html

 

thank you thats all i wanted

 

$2100 for a rear diff[&o]

 

Thats really expensive and it only makes it a little better unless you have a **** ton of power

 

I am getting the stasis center differential soon. When I am cornering in first and I acclerate out, the front tires spin and the rear grip, so it is like driving a fwd, it just pushes. So with the center diff, takes the power distribution from 3:1 to 4:1, this problem should be fixed.....then the real fun starts. But in the rain, everything spins.....so.....if I can ever afford the rear diff, that would be sick.