The Brembo PISTA two-piece replacement disc, 380 x 34 mm with 65a 20 mm airgap, T3 72V left-hand (LH) orientation, is a direct-fit hat-and-ring rotor specified for this diameter, thickness and airgap. Replace the left-side disc as part of axle service and pair it with the matching right-side piece to preserve proper airgap and even braking contact.
Brembo 380x34x65a 72V 20mm Airgap T3 LH PISTA Replacement Disc