I sold my Challenge and got a new Moto. First order of business was to add the Akrapovic full-Ti system ... Original header New Ti header Going on the new bike Added the axle sliders And peg sliders Exhaust system includes nice carbon heat shields Ready for the first ride The results? Awesome! Pipe is loud but it is a good loud. Sounds great rolling the throttle through the middle gears. Bike handles well at higher speeds. I need to get a few more heat cycles on the motor so I can ramp her up. This bike is going to rock down in the hills! Stay tuned, I have a couple plans for the bike including Challenge wheels/tires and maybe some bodywork changes.