Cusco
Cusco Pro-Adjust Kit MZ LSD Rear STI GC8/GDB/GRB/GVB
$3,118.31
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Part price$3,118.31
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✓ Confirmed-fit parts — add your vehicle in your Garage to check fitment.
Pro-Adjust service components for the Cusco MZ helical rear LSD on R180-equipped GC8, GDB, GRB, and GVB Subaru STI models. Used to retune preload characteristics on an installed unit that's drifted from its original spec.
Helical units don't wear the same way plate types do, but preload adjustment is still worth doing after high-mileage track use.