Gibson 9545 Aluminized Dual Split Rear Performance Cat-Back Exhaust System 3 inch/2.50 inch aluminized mandrel bent tubing Gibson Muffler features a baffled & chambered design, no internal packing, powerful deep tone 4.0 inch; Polished; T304 Stainless; Round; Slash- Cut Tip; Clamp on Exit Is Straight Out The Back Lifetime Limited Warranty 3-inch/2.50-inch aluminized mandrel bent tubing Gibson Muffler features a baffled & chambered design, no internal packing, powerful deep tone 4.0 inch; Polished; T304 Stainless; Round; Slash- Cut Tip; Clamp on Exit Is Straight Out The Back