High-performance 12-speed chainThe KMCX12 is a 12-speed chain for mountain bikes.High performance and shifting precisionHigh transmission efficiencyChamfered inner and outer chainrings to reduce friction and noiseGreater durability for longer outings DETAILS 126 links1/2 "x 11/128" Pin length 5.3 mm PURCHASING OPTIONS Color: silver INCLUDESSpare chain linksInstruction manual COMPATIBILITY Compatible Sram with XX1 Eagle, X01 Eagle. GX Eagle, NX Eagle Shimano 12 speeds