Roll with it the xx1 chain comes from a long line of tough light weight chains from sram when every bit of torque counts you can count on it to deliver 1x specific chain hard chrome technology for maximum strength and wear resistance proprietary link finish provides improved life span 11 speed power lock technology highlights x sync hard chrome compatible gears 1x11 speed model pc xx1 pin treatment hollow pin weight 252g recommended group x01 xx1 speeds 11 speed compatibility 10 42 cass