SPD offers a wide range of collectors for all racing applications. Merge Collectors are the choice of most Professional Engine Builders and Race Teams throughout all forms of motorsports. Prebent tube parts are machine cut, hand fit and finished to form a pyramid inside each collector for proper air flow management. Prebent Merge Bends are available in a variety of bend angles to suit almost any application. All SPD Merge Collectors are TIG welded (Purge style) to ensure professional performance and appearance. All SPD Merge Collectors are finally completely cleaned and polished inside for maximum flow and minimum turbulence. In addition to Merge style collectors, SPD offers Weld On style collectors for the Turbo market, Formed Collectors for almost every racing application, and Y & X style collectors to complete your exhaust system. Buy the best in Merge Collectors at SPD.