Sram pc1170 11 speed chain 108 linkssrams pc1170 11 speed chain takes the same technology as seen on their 10 speed version and takes it a little further the pc1170s outer plates are even more chamfered to make shifts smoother and to make it run quieter too hollow pins keep the weight down and as they are chrome hardened they extend the chains life span installation is made simple thanks to srams powerlock joining link which can be easily joined by hand so theres no more fiddling aro