FMF is about moving forward...faster. The all new Titanium Powercore 2.1 SHORTY silencer is proof FMF is totally committed to 2-stroke progression in weight, performance and looks. FMF loves 2-strokes, they ride 2-strokes, and they are devoted to delivering superior power to the 2-stroke faithful. ? -Race-tested, smooth power curve throughout the RPM range. ? -Engineered to assault today's tracks built to favor 4-strokes. ? -Larger diameter titanium canister for more tunability and longer lasting packing life. ? -The SHORTY delivers a crisp, notable sound. ? -Pounds Lighter than stock. ? -Complete titanium construction, front to back. ? -Optimally designed to complement performance of FMF pipes; works and fits FMF or stock.