Xsara - Exhaust - Xsara - Exhaust: browse our selection on NSB concept. Find exhaust, xsara and decatalyzers and compare options. Filter by reference, fitment and specs to pick the right part.…Xsara - Exhaust - Xsara - Exhaust: browse our selection on NSB concept. Find exhaust, xsara and decatalyzers and compare options. Filter by reference, fitment and specs to pick the right part. Find a wide selection of stainless steel sport exhaust silencers, cat-back exhaust systems, exhaust manifolds, downpipes, and decatalyzers for CITROEN Xsara. Search by part number / model Specs & fitment details For maintenance and performance builds How to choose? Match the original part number or key specs (dimensions, type, mounting) and check fitment notes. Not sure? Use the category filters or reach out with your vehicle details and the reference you need.