M4 Performance Exhaust designs and manufactures high quality exhaust systems for all popular sport bikes. They create full systems and slip-ons that are dyno-tuned with precision for optimal performance and sound.

Suzuki's flaghip sportbike, the legendary GSX-R line has ruled the racetrack since its inception in 1985.  M4 Exhaust helps add that racetrack power and sound to your GSX-R, while reducing weight and improving looks.  M4's GP full system features stainless steel headers and midpipe, with muffler styling inspired by MotoGP exhaust systems, as well as the performance and sound M4 is known for.

• Simple installation
• Increases power across entire rev range
• Manufactured from high quality stainless steel
• Satin black ceramic finish
• Significantly lighter than OEM exhaust
• All M4 mufflers are fully rebuildable