Pypes Exhaust SFM60MS Pype Bomb 2-1/2" Diameter 4" Tips Stainless Steel Axle-Back Exhaust System for Ford Mustang Fits 2005-2010 Mustang GT 4.6L The Pypes system replaces the axle-back portion of the exhaust Polished stainless, dual-wall 4.0" tips Deletes the mufflers; Resonated tips eliminate the popping noise from other muffler delete kits Pypes Performance Exhaust SFM60MS