Shimano GRX FC-RX810-1 11-Speed Gravel Crankset 40T 170mm

The Shimano GRX FC-RX810-1 crankset is built for riders who demand reliable performance across gravel roads, mixed terrain, bikepacking routes, and everyday adventure riding. Designed specifically for Shimano’s GRX gravel groupset, this 11-speed crankset delivers smooth pedaling efficiency, stable chain retention, and excellent power transfer for long-distance comfort and control. Featuring Shimano’s advanced Hollowtech II technology, the FC-RX810-1 offers a lightweight yet highly durable construction that handles rough terrain with confidence. The 40T chainring setup provides balanced gearing for climbing, fast gravel sections, and endurance rides, making it an excellent choice for modern gravel and adventure bikes. With optimized chainline and wider clearance for gravel frames and tires, this crankset ensures dependable shifting and smooth drivetrain performance even in demanding riding conditions.

Key Features

• Series: SHIMANO GRX 11-Speed

• Crank Length: 170mm

• Chainring Size: 40T

• Speed Compatibility: 11-Speed

• Technology: Hollowtech II

• Optimized Use: Gravel, adventure, touring, and mixed terrain riding

• Chainline: 50.1mm for improved tire and frame clearance

• Bolt Pattern: 110mm 4-bolt asymmetric design

• Lightweight Construction: Strong and efficient aluminum crank arms

• Color: Black

• Designed For: Stable and efficient gravel drivetrain performance

Product Specifications

• Product Type: Front Chainwheel / Crankset

• Model: FC-RX810-1

• Series: Shimano GRX

• Rear Speeds: 11-Speed

• Crank Arm Length: 170mm

• Chainring Teeth: 40T

• Q-Factor: 151mm

• Chainline: 50.1mm

• Compatible Chain: HG-EV 11-speed, HG-X11

• Bolt Circle Diameter: 110mm asymmetric 4-bolt

• Recommended Bottom Brackets: SM-BB72 (PressFit), SM-BBR60 (Threaded)

• Threaded BB Shell Width: 68/70mm

• Bottom Bracket Included: No

• Material: Hollow forged aluminum construction

• Color: Black

Gravel Riding Performance

The Shimano GRX FC-RX810-1 is engineered specifically for gravel and adventure riding where stability and durability matter most. Its wider chainline improves tire clearance for modern gravel bikes while maintaining efficient drivetrain alignment. The single-chainring setup reduces drivetrain complexity and helps deliver quieter, more secure chain performance on rough roads, loose gravel, and uneven terrain. Combined with Shimano’s Hollowtech II crank design, riders benefit from excellent stiffness, efficient power transfer, and reduced overall weight for long rides and demanding conditions.

Why Choose This Product

• Designed specifically for gravel and mixed terrain cycling

• Excellent balance of lightweight performance and durability

• Reliable Shimano 11-speed drivetrain compatibility

• Efficient power transfer with Hollowtech II technology

• Wide chainline improves frame and tire clearance

• Ideal for endurance rides, touring, bikepacking, and gravel racing

• Trusted Shimano engineering for long-lasting performance

In the Box

• Shimano GRX FC-RX810-1 Crankset