FMF Powercore 4 Muffler Aluminum KTM 690SMC Enduro 2008-2014 045226 FMF POWERCORE 4 CONSTRUCTED OF STAINLESS STEEL WITH A LIGHTWEIGHT ALLOY CAN SPACE AGE INTERNAL PACKING FOR MAXIMUM PACKING LIFE HI-FLO MODULAR END CAP INTERNAL SHAPE OF CORE USES HI-FLO TECHNOLOGY