Springfield Dyno exhaust for 1.6L Miata. For track-use only, bolts in in-place of the cat. Originally purchased new (http://www.saferacer.com/springfield-dyno-spec-miata-exhaust.html?productid=541). Installed and used at 1 open track event. Uninstalled and never used again. Deformed tip from contact with a steep driveway, see picture. $100 + shipping (up to $35, depending on destination) to contiguous USA. Local pick-up available in Rowland Heights, CA.