Graves Motorsports Yamaha R1 2007-08 Full Exhaust System Titanium w/ Carbon Fiber SilencersDescription: Our full exhaust system for the 2007 Yamaha R1 features mandrel bent titanium tubing, billet aluminum flanges and carbon fiber silencers with tapered conical outlets. An O2 Bung (w/ plug) is provided for use with the stock Yamaha O2 Sensor. Gains of 13.6 hp can be achieved with use of a Power Commander. Installation of this system will shed 11.4 lbs from the already light bike.Horsepower:Graves Full Exhaust System = 170.1 hp (+13.6 hp)Stock Exhaust System = 156.5 hpTorque:Graves Full Exhaust System = 81.45 ft. lbs.(+5.79 ft. lbs.)Stock Exhaust System = 75.66 ft. lbs.Exhaust System Weights:Graves Full System (Stainless Steel) = 13.8 lbs. (-8.6 lbs.)Stock Full System = 22.4 lbs.NOTE: You may also select from standard “satin” finish or all new “BLING” polished end caps and entrance tips (available on the pull down menu).When ordering with a power commander please specify in the order notes and we will map the power commander for you!