Shimano GRX ST-RX610 Shift/Brake Lever BR-RX410 Hyd Disc Brake Caliper - Right/Rear 12-Spd Flat Mnt Caliper For 25mm Mount BLK MFPN=46878 }RockShox DebonAir C1 Seal Head 1528230250843.0 Color:Red 37 BB Frame Interface MFPN=00.7518.080.002

Shimano GRX ST RX610 Shift Brake Lever BR RX410 Hyd Disc Brake Caliper Right Rear 12 Spd Flat Mnt Caliper For 25mm Mount BLK MFPN=46878 }RockShox DebonAir C1 Seal Head 1528230250843.0 Color:Red 37 BB Frame Interface MFPN=00.7518.080.002 }RockShox DebonAir C1 Seal Head Upgrade Kit 35mm Fits Lyrik Yari A1+ (2016+) Pike B1+ Revelation A1+ (2018+) Chainline Hub Compatibility 135 142 MTB Hubs Chainline Hub Compatibility 141 148 Boost Hubs Color Black Silver Defined Color Black Defined Color Silver Direct Mount Type Direct Mount SRAM Drivetrain Speeds 12 Material Aluminum Offset 3 Ring Position Type Chain Retaining Single Ring Round or Oval Round Tooth Count 32