This is a serious bike so GPR have developed a serious exhaust for it. This stainless steel full system utilises thin wall stainless for strength and lightness. It weighs approx half the original exhaust. The "Powerbomb" on the header pipe adds bootom and mid range power and helps control the decibels. The Powercone silencer has a removable db reducer and a removable baffle. Get serious and fit your Husqvarna SMS4 with a GPR full system
COHU25PC