PowerCore 4 Slip-On. Race-inspired, price-point muffler made for maximum power output. Aircraft-quality extruded aluminum canister with stainless steel components. Removable spark arrestor included on S/A models, see footnotes.
Put it on my 04 KTM 450 SX and it sounds great. Solid exhaust. You may have to find your own rubber grommets if you don’t still have your stock stuff. This kit does not come with the grommets.