Features: TITANIUM POWERCORE 2.1 SILENCER. 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.. NOTE: Will not pass 2025 FIM sound regulation.