The Shimano GRX Adventure 46/30T crankset paired with an 11-34 tooth 11 speed cassette gives you an evenly spaced wide range of gearing for everything from fast gravel or road rides or to tackle any hill on any terrain. Shimano GRX shifters / brake levers are precise and powerful with new gravel specific ergonomics that have all day comfort on the hoods and offer light precise control and stability. The top level GRX-810 clutched rear derailleur keeps your chain secure and quiet while eliminating chain slap.