My bike was once owned by Freddie Spencer and now is also graced with former AMA champion Kurtis Roberts Erion Racing Bodywork. The full titanium Arrow exhaust sounds like a symphony of combustion perfection. Once the tach exceed 10,000 RPM it becomes an untamed beast. The difference in a good exhaust and a great exhaust is race proven technology, not just less packing within a shiny cannister for $389.00. The beauty straddling the CBR is also very mild mannered until provoked and then she screams too! A Very WYLD pair!!!!