DNA MFL-OV-DT-SQ-S-3-3-BK - Black Coated Stainless Steel Dual 3" Square Tip Exhaust Oval Muffler Improves Exhaust Velocity Performance. Offers Great Air Flow and Higher Horsepower Gain Instantly Increases 5 - 10 HPs for Most Vehicles Inner Inlet Diameter - 3" / Tip Diameter - 3" Overall Dimensions - 23.5"L x 7.75"W x 5"H Canister Dimensions - 14"L x 7.75"W x 5"H