Warchild
Benevolent Dictator
That is a Yoshimura 4-2-1 R-77 Carbon Fiber exhaust system.
In a rare show of engineering prowess, the Yosh setup is so perfect out of the box, many reputable tuners acknowledge that this system does not substantially benefit from a PC-III the way most full systems do... the full systems adds about 6-8 horsepower, but a PC-III on top of that only adds a whopping 2 hp.
The canister is shipped with the noise baffle installed in the pipe. It is a deeper tone that stock (obviously), but is still amazingly quiet. If you remove the baffle, the tone is significantly deeper (it "growls" more), but it is still not obtrusive. As with most pipes, once the packing starts to wear away, you hear the pipe more.
I researched a bunch of systems.... but my goals were different from many: I just wanted to dump the massive weight and hideous looks of the stock bazooka mufflers. Wasn't all that concerned about increasing horsepower... with 173 hp at the rear wheel (bone stock), I am not exactly hurting to move the bike down the road. The whole stock exhaust systems weight 52 lbs... this entire Yosh 4-2-1 setup is 14lbs, total.
