Cat-back exhaust from Neuspeed features aerospace quality T-304 stainlee steel and 50mm to 60mm mandrel bent tubing, capped with a set of hi-flow mufflers with highly polished slash cut tip. Fits all Audi A4 1.8T front wheel drive vehicles 2002-05, including CVT transmission. Adds approximately 6-8 horsepower; 50 state legal. NOTE: Photo is for illustration only. Actual system is similar, but not identical to picture.