FMF Racing Powercore 2 Shorty Aluminum Muffler w/Stainless End Cap for KTM 85 SX 03-17/85 XC 08-09/105 SX/XC 07-12/Husqvarna TC85 14-17FMF Powercore 2 Shorty Silencer KTM Husqvarna 85cc 105cc SX XC Based on the performance proven platform of the Powercore 2 Silencer, FMF created the Powercore 2 Shorty Silencer, which utilizes a shorter aluminum canister and inner core. This design decreases the amount of back pressure in the muffler, which on a 2 stroke will increase throttle response and low to mid range power. If you spend most of your time riding on tight tracks and trails, the