Shimano GRX FC-RX810-2 Crankset – 48/31T, 172.5 mm, 11-Speed

The Shimano GRX FC-RX810-2 crankset is built for gravel, adventure, and endurance riders who want a wider gear range and the efficiency of a 2x system. Featuring a 48/31T chainring combination, this crankset provides the versatility to spin up steep climbs and power across fast flats. With Hollowtech II construction, it balances stiffness, durability, and weight savings, delivering smooth power transfer for 11-speed GRX drivetrains.

Why you’ll like it

• 2x chainring setup – 48/31T gearing gives you a broad range for both climbing and speed.
• Gravel-optimized design – engineered specifically for mixed terrain and adventure riding.
• Hollowtech II construction – lightweight, stiff, and durable for efficient pedaling.
• 172.5 mm crank arms – versatile length that balances leverage and cadence efficiency.
• 11-speed compatibility – works seamlessly with Shimano GRX and other 11-speed drivetrains.

What’s in the box

• 1 × Shimano GRX FC-RX810-2 crankset (172.5 mm arms, 48/31T chainrings)
• Bottom bracket not included (sold separately)
• Chain guard not included

Tech specs

Manufacturer	Shimano
Series	GRX
Model	FC-RX810-2
Manufacturer Part #	KFCRX8102DX81
Speed	11-speed
Chainrings	48/31T
Crank Arm Length	172.5 mm
Interface	Hollowtech II
Chain Guard	Not included
Bottom Bracket	Not included
Application	Gravel / Adventure / Mixed-surface riding

Fit notes

• Designed for Shimano GRX 11-speed 2x drivetrains.
• Requires Hollowtech II bottom bracket (sold separately).
• 48/31T gearing is optimized for gravel terrain—wide range with climbing and high-speed capability.