MagnaFlow Touring Series Cat Back Exhaust System - 2004-2006 Audi S4 PDM_caster-adjustment Slots create out-gassing exit points

Slots create out-gassing exit points for brake pad friction gasses to escape

(1) Heavy-duty dual output wiring harness

This advanced rear differential significantly enhances cornering grip and speed

Improves drivetrain precision and rear axle stability on GR/GV WRX/STI

MagnaFlow Touring Series Cat Back Exhaust System - 2004-2006 Audi S4 PDM_caster-adjustment Slots create out-gassing exit pointsMagnaFlow Touring Series Cat Back Exhaust System Audi S4 2004 2006 RallySport Direct proudly offers you a great selection of quality performance exhaust systems brought to you by Magna Flow. On this page, you are looking at the Magna Flow Touring Series Cat Back Exhaust System. The Touring Series has been designed to provide a more comfortable interior sound with an aggressive exterior sound with dyno proven results. Compared to the Street and