A straight flow type muffler designed to produces low-noise-aggressive sound within range of 0.8L-1.6L vehicles.
R4509 straight flow muffler, is designed for 0.8L~1.6L vehicles. This muffler helps reduce loud noise of 3-cylinder engine and produce aggressive sound, turning it into sport and powerful machine.
For N.A vehicles below 1.2L, it’s encourage to match this muffler with B.Cobra resonator to improve it’s throttle responses.
R4901 will works as universal muffler if it’s installed on turbocharged & 1.3L to 1.6L N.A vehicles.