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The Cusco 20mm rear sway bar fits 2008+ WRX/STi models (GRB, GVB, GH8, BR9, BM9) as a direct-fit anti-roll bar to reduce body roll and improve rear-end stability. Sized for these model codes, the bar helps control lateral weight transfer to produce a firmer, more balanced handling characteristic without altering core suspension geometry—useful for drivers wanting sharper mid-corner behavior on street or track.
Cusco Sway Bar Rear 20mm GRB GVB GH8 08+ WRX/STi BR9 BM9
