RK Takasago Sprockets are supplied to us with their 11 point quality control specifications sheets - that™s how committed to quality and excellence RK is in the world of manufacturing. With tooling of this calibre it is easy to see why RK Sprockets are the first choice sprocket of world leading motorcycle manufacturers and racing teams. RK Takasago Sprockets are supplied to White™s Powersports with their 11 point quality control specifications sheets - that™s how committed to quality and excellence RK is in the world of manufacturing. With tooling of this calibre it is easy to see why RK Sprockets are the first choice sprocket of world leading motorcycle manufacturers and racing teams. Rear sprocket manufactured with S45C Carbon Steel