Shimano GRX 600 11 Speed Gravel Single ChainsetThis superb two-piece chainset is designed for increased rigidity with less weight as you ride across rough gravel roads and muddy terrain. Ideal for any situation, this stunning model has the ideal tooth count for mixed terrains to give you maximum performance. Stiff and Lightweight Gravel CranksetThis stunning example uses Hollowtech II crank arm technology to boost your gravel riding performance. As a result, you'll benefit from more stiffness and weight savings as it integrates your bottom bracket axle with its right crank arm to achieve a highly efficient balance.Features: Use: Gravel, Road Speed: 11 speed Chainline: 50.1mm Chainring Combination: 40T Compatible Chain: HG-EV 11 speed, HG-X11 Arm: 4-arm BCD: 110mm Recommended Bottom Bracket: Pressfit: BB-RS500-PB; Threaded: BB-RS500 Q-factor: 151mmTechnologies: 2-Piece Crankset: Integrated crank arm and bottom bracket. Increased rigidity with less weight. Wider bearing positioningRigidity is enhanced and pedaling force is efficiently transmitted. Precision Bearings. Low maintenance and simplified installation.A 2-year warranty is offered with all Shimano products from Chain Reaction Cycles (3 years on Dura-Ace and XTR products).Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.