Viewed from behind, DBX S is dominated by quad exhausts that are now stacked vertically. Informed by the potent Aston Martin Vanquish, the quad stacked exhaust finishers are available in both gloss and matte finishes. The unique bumper infill panel is extended to the outer quarter and reimagined with a fully functional rear diffuser and full-width lower wing. The transformed rear bumper and diffuser have been completely reprofiled and, together with the side sills and wing, can be specified in carbon to reduce overall vehicle mass by a further 15 lb.