HMF Racing Can Am Commander 800-1000- Titan-QS-Series Slip On 11-13The Can Am Commander is available as a Dual 3 4 System in the Performance Series, or a single Slip On system in the Titan. The Dual 3 4 system comes with an O2 Bung installed and is available in two different mounting locations, Center or Outer. The Slip On system will require an AFR+ Gen 4 Fuel Controller with an O2 bung welded on the stock head pipe. Featuring an aggressive exhaust tone, there will be slightly more performance gains with the Dual 3