Shimano FC-RX600 GRX Cranksets - 11 Speed Option:175mm x 40 Tooth (Black) This gives it dynamic resilience

This gives it dynamic resilience while its modern sidecut and rounder flex pattern keep it energetic and lively

Compatible Chain: HG 12-speed

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•Comfort Lining:- Polyester

Shimano FC-RX600 GRX Cranksets - 11 Speed Option:175mm x 40 Tooth (Black) This gives it dynamic resilienceOptimum gearing for mixed terrains and riding styles 2 pcs Structure Crankset (11 speed) Series: SHIMANO GRX 11 speed Chainline: 50. 1mm Gear combination: 40T Compatible BB Type: recommended BB RS500 PB (PressFit), BB RS500 (threaded) Threaded BB Shell Width: 68 70mm Q Factor: 151mm Compatible Chain: HG EV 11 speed, HG X11 Bolt Circle Diameter: 110mm 4 bolt asymmetric Rear Speeds: 11 speed