Designed to meet the demands of the ever-growing gravel and adventure bike market, Shimano's GRX range is built to be tough and versatile. The GRX RX600 11-Speed Chainset has all the features gravel and adventure riders need.Single 40T chainring for optimum gearing for mixed terrain and riding stylesTooth profile provides impeccable chain retention over rough terrainLightweight Hollowtech II construction is stiff, easy to fit & remove and incredibly strongBottom bracket not included sold separatelyGetting the right gearing for your gravel or adventure bike is essential, and with 1x drivetrains becoming more and more popular thanks to their simplicity, Shimano have created this single chainring version of the GRX RX600 to meet the demands of riders. The single chainring provides excellent chain retention thanks to it's special tooth profile, and when teamed with a wide-range cassette you'll have the gears you'll need for both climbing and descending The GRX RX600 uses Shimano's long-s