Pre-Owned GT3 Muffler Adapter Kit for 981

Pre-owned kit. Inspected and ready to install. Expect light cosmetic wear.

Put a GT3 muffler on your 981 Cayman or Boxster. This adapter kit connects a Dundon-compatible GT3 muffler to any 981 chassis car, and it's the same hardware we use in our D4 GT4 power package.

Built from 2.5" 321 stainless steel for a lifetime of trouble-free use. The integrated 2.5" valves keep flow routed through the upper path of the GT3 muffler while cruising to kill drone, then open up when you're on it for full flow and full sound.

Running race headers? Add the optional 200 CPSI catalytic converters and convert a race-headered car back to a catted setup. Putting the cats here lets the headers make their power first, with only a 3-4 whp penalty in our testing.

Kit includes:

• 2.5" 321 stainless over-axle pipes
• 2.5" valves
• GT3 muffler bracket
• GT3 muffler straps
• Optional 200 CPSI catalytic converters

Muffler and tips sold separately.