Kmc x9 93 bicycle chain 9 speed the kmc x9 93 bicycle 9 speed chain is light strong and durable kmc know how to design engineer and build a good chain and with the x9 93 you get their unwritten seal of approval get your kmc x9 93 from probikekit today you can see all the key features in the section below key features x bridge the x bridge outer plate has been configured with precisely articulated angles for quicker and smoother gear shifting and quieter riding chain dimensions