New for 2014 we are pleased to add Diamond S Titanium Quiet Silencers to our inventory in our effort to provide the lightest and best products for your Ski-doo XM 800 ETEC sled. These silencers are very quiet passing the SAE J -2567 stationary sound test and only weigh an incredible 3.4 pounds. That is 14 pounds lighter than the stock silencer. Independent dyno results show an increase in hp which is very hard to achieve and attests to the design standards of Diamond S. Another plus is the fact that titanium greatly resists rusting so it looks great for a long time. This fits all 2013-15 Ski-doo XS/XM 800 ETEC chassis sleds including MXZ, Renegade, Renegade B/C , Freeride, and Summit models.