Arm Material: aluminum Arm Length: 165, 170, 172.5, 175mm Chainring Sizes: 40t Bolt Circle Diameter: 110mm Bolts: 4 Upgrade your gravel rides with the GRX FC-RX600-1 Crankset - the perfect blend of performance, durability, and sleek design for mixed terrain cycling. Engineered specifically for gravel and adventure riding, this 110 BCD, 11-speed crankset guarantees smooth power transfer and confident handling on any route. Materials & Construction: Built with a robust 2-piece crank design, the GRX FC-RX600 features high-strength aluminum alloy arms that balance lightweight performance with exceptional durability. Its black anodized finish not only offers corrosion resistance but also complements any gravel bike aesthetic. Performance & Engineering: Designed for optimal gearing, the 40-tooth single chainring provides a versatile gear ratio ideal for varied terrains. The tighter gear steps ensure smoother cadence transitions, maintaining momentum whether you're navigating steep climbs or fast descents. With a 49.7mm chainline and a 151mm Q-factor, this crankset delivers a natural Pedal stroke and enhanced comfort over long rides. Components & Technology: Utilizing 's innovative Hollowtech II spindle interface, the FC-RX600 ensures maximum strength and stiffness while minimizing weight. The 110mm bolt circle diameter (BCD) with Asymmetric design allows for easier chainring swaps and maintenance. The 9/16" pedal spindle compatibility enables a wide range of pedal options for personalized riding setups. Style & Use Case: Sleek black finish pairs seamlessly with any gravel, cyclocross, or adventure bike. Its dedicated gravel application makes it the go-to choice for riders seeking reliability and performance on mixed terrains, from rugged dirt paths to smooth tarmac. Innovative Features: - Single 40T chainring for simplified drivetrain and reduced weight - Tighter gear steps for consistent cadence on familiar routes - Designed specifically for gravel and adventure riding - Compatibility with 135/142mm road disc hubs and 415mm chainstay lengths Specificati