Diamond S Titanium Quiet silencer for the REV GEN4 850 ETEC 2017-2020! The ultimate in high quality super lightweight (lightest on the market ) silencer to get the REV GEN4 850 a crisp clean quiet sound and no loss of power! Testing has shown an increase in rpm and power in deep powder testing. This is also the quietest aftermarket muffler available for the Ski-doo 800 & 850 sleds! Keep your trails open and still have lightweight performance ! This fits the MXZ, RENEGade And Summit G4 850 Etec sleds!