Custom ATP stainless steel 3" downpipe designed to work with MK4 1.8T cars. Made to work with ATP cast iron manifold and any of the following turbine housings: GT28RS 5 bolt, GT 4 Bolt 3" opening, GT/T3T4 - 4 Bolt 2.5" opening, T3/T4 External wastegate 5 Bolt, T3/T4 Internal Wastegate 3 bolt, . 3" diameter with stainless steel flex section. Comes with 3 piece bolt up pipe assembly AND the appropriate V-band adapter to the particular turbo (V-band clamp included). Also comes with race section and has provisions for the factory oxygen sensors. *Hi-flow catalytic converter sold separately to replace the rear racesection