Euro Sport's downpipe for the MK4 1.8T Volkswagen‚s and Audi TT 1.8T (99-06 180HP). This work of art is constructed of tig-welded 16-gauge 2.5" mandrel bent T304 stainless steel tubing. We also incorporate a 2.5" stainless steel Hi-Flo catalytic converter, stainless steel oxygen sensor fittings, and a stainless steel OE style flex joint into Euro Sport's design. The connecting flange is ‚½" thick, laser-cut, heavy duty coated steel. Included with the downpipe is a new OE flange gasket. Backed by a 6 month warranty against manufacturing defects and workmanship. [1.8T Turbo Downpipe #1780004] * NOTE: DUE TO C.A.R.B. RESTRICTIONS, THIS ITEM IS CURRENTLY NOT FOR SALE IN CALIFORNIA.Fitment: Audi TT 1.8T 180HP 99-06 (not for Quattro), MK4 Golf, GTI and Jetta 1.8T 99-05, MK4 Beetle 1.8T 99-05