Shimano XT SL-M8100-I Right Shifter Cover Unit MFPN=90120-001-17 It has barrel bosses at CheckoutSpec= CrMo Rails - Black/Gray and ride with 3 B-XN6165 Capacity:500

Shimano XT SL M8100 I Right Shifter Cover Unit MFPN=90120 001 17 It has barrel bosses at CheckoutSpec= CrMo Rails Black Gray and ride with 3 B XN6165 Capacity:500 It has barrel bosses at the dropouts and crown mid blade thru blade eyelets and triple bottle bosses on both fork legs Rings 42Number of Chainrings Chain Retaining SingleDrivetrain Speeds 12Drivetrain Speeds 13Chainring BCD Direct Mount SRAM 8 BoltChainline Hub Compatibility 135 142 Road Disc Hubs < 415 mm ChainstayChainline Hub Compatibility 135 142 Road Disc Hubs > 415 mm ChainstayColor BlackCrank Length (mm) 165Crank Intended Use RoadCrank Intended Use GravelBB Included NoPedal Spindle 9 16"Spindle Interface Type SRAM DUBDefined Color Black