RPM Can-Am HD11 Sport Muffler + Mid Pipe (2/3 Exhaust System)

Can-Am HD11 Sport Muffler + Mid Pipe Transform your Can-Am Defender HD11 workhorse into a true powerhouse with the RPM 2/3 Exhaust System. This complete bolt on upgrade replaces both the restrictive factory muffler and mid-pipe, increasing exhaust diameter for improved flow and all around performance gains. It delivers noticeable power gains on stock machines — and drastic improvements on tuned setups, all while maintaining excellent drivability and near stock sound levels. Crafted from premium 304 stainless steel and TIG welded for maximum durability, the RPM system reuses all factory mounting points, donut gaskets (included), and mid-pipe heat shields (new rivets included for easy reinstallation). Factory heat panels reinstall perfectly, though they're optional. The result? Superior flow, reduced operating temperatures, and significant weight savings compared to stock. Key Benefits: Power Gains: 3-5 HP on a stock HD11. Tuned machines see substantially higher gains thanks to the less-restrictive 2/3 design. Refined Sound: Slightly louder than stock at idle for that satisfying head turning startup, but remains very close to stock dB levels in the mid to upper RPM range. No excessive drone. Cooler Operation: Lowers EGTs & less bed heat Easy Installation: Direct bolt on using all factory mounts and hardware. No cutting or modifications needed. Lightweight & Premium Build: TIG welded 304 stainless steel construction for lasting quality and finish. Decibel Levels (approximate): 1 dB louder than stock at idle 2.5 dB louder than stock at 3000-5000 RPM Features: 3-5 HP Gain (stock) / Much higher on tuned machines Lower EGTs for better reliability Re-uses factory heat shields (new rivets included) Includes factory donut gasket TIG-welded 304 stainless steel No tune required (though highly recommended for max gains) Optional spark arrestor All factory mounting points retained Significant weight savings Fitment: Fits all year and model variations of the Can-Am Defender HD11. This system stands out from slip-on-only options by addressing restrictions in both the muffler and mid-pipe for better overall flow and performance. Perfect for work, trail, or play — without compromising the refined character of your HD11. Replaces OEM Muffler # 707603824 & Mid Pipe # 707603434