Rev9 2pc Valved Side Muffler Bypass Pipe for Porsche 911 991 GT3 RS 911R 14-19 1.3" Fit: Mazda 3 2010-2013 BL

Fit: Mazda 3 2010-2013 BL 2

Note: Will not fit M3 or Convertible

-No drilling required

FIT: Scion xA/xB 04-06

- All Hardware is Included (Reuse OEM top plates)

Rev9 2pc Valved Side Muffler Bypass Pipe for Porsche 911 991 GT3 RS 911R 14-19 1.3" Fit: Mazda 3 2010-2013 BLApplication: Porsche 911 991 GT3 GT3 RS 911R 14 19 FlowMaxx Valved Side Muffler Bypass Pipes for Porsche 991. 1 991. 2 GT3 GT3 RS models are equipped with valves offers the capability to produce an aggressive exhaust note under acceleration, and a more quiet tone for city driving. When cruising on the streets the valves are closed and produce a deeper exhaust tone. At wide open throttle the valves will open, producing a unique rich exhaust tone.