Cusco
Cusco MZ LSD 2-Way (1.5/2-Way) Rear STI GC8/GDB/GRB/GVB
$2,234.24
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Part price$2,234.24
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✓ Confirmed-fit parts — add your vehicle in your Garage to check fitment.
MZ helical rear LSD for the R180 Subaru STI diff set to full 2-way from the selectable 1.5/2-way range. Fits GC8, GDB, GRB, and GVB — covers the classic GC8 STI through the current chassis. Full lock both directions, no clutch pack to service.
Adjustable down to 1.5-way spec if you decide you want partial decel engagement rather than full — built-in flexibility.