Fact Sheet of Shimano GRX RX810 Groupset 2x11-speed Product Name: Shimano GRX RX810 Groupset 2x11-speed Manufacturer: Shimano Parts Item Code: SHI439494 activity: Bike usage bikesport: Road Bike, Cyclocross, Gravel, Allroad / Gravel Road crank arm length: 170, 172,5, 175 gear ratio: 11-12-13-14-15-17-19-21-24-27-30 number of chainrings: 2 shifting system: 11-speed shifting actuation: Mechanical brake type: Disc Brake bottom bracket axle profile: GXP 22/24mm number of teeth: 48-31 front derailleur max. teeth: 50 rear derailleur cage: medium rear derailleur max. teeth: 34 rear derailleur capacity: 40 Color: Black