Two Brothers Exhaust IncludedThe tag line for the launch was Top Performer and I heard more than 1 stifled chuckle as the Japanese engineers attempted to pronounce these new Suzuki buzz words. With the 2006 GSX-R600 getting a new chassis, engine and exhaust system, as well as being completely restyled, this is obviously not a makeover either, this is a completely new model. The new engines height is 20mm lower and length 54mm shorter, although internally it retains its 67mm bore and 42.5mm stroke: The same as this years R6 and CBR600RR for a displacement of 599.4cc. The engine is also titled forward, which moves the center of the swingarm pivot shaft towards the front of the motorcycle by 67mm, as well as being 16mm narrower.Also Includes 2 Brother Exhaust.