The Flowmaster® dBX® exhaust system is for 2005-2012 Toyota Tacoma models with the 4.0L engine. The all mandrel-bent stainless steel system consists of a flanged 2.50 in. head pipe flowing into a 2.50 in. inlet dBX performance muffler that utilizes our race proven Laminar Flow technology. The dBX muffler exits with a 3.00 in. outlet flowing into the large 3.00 in. tailpipe, exiting out the passenger side behind the rear tire. The tailpipe is finished off with a large 3.50 in. polished stainless steel tip and the system includes all the necessary parts, hardware and easy to follow instructions. As a dBX system, it will typically produce a moderate interior sound level with an aggressive exterior sound level that is well suited to enthusiast type drivers. Note: Fits all wheelbases except Std cab or X-Runner models.