Shimano FC-RX810-2 external gravel bike chainring, 48 teeth - Y0JR98010

The Shimano FC-RX810-2 48-tooth Y0JR98010 outer chainring is a genuine spare part designed to replace a worn or damaged chainring on Shimano GRX RX810 2x11-speed cranksets. Developed specifically for gravel riding, it offers an optimal balance between performance, reliability and shifting precision, even on the most demanding terrain. Compatible exclusively with the Shimano GRX FC-RX810-2 crankset, this 48-tooth chainring maintains the drivetrain’s original performance and ensures smooth shifting between chainrings.

Made from high-quality aluminium, it combines lightness, stiffness and excellent wear resistance. Its design incorporates the ‘ Shimano ’ shifting ramps and pins, ensuring fast and silent transitions with the 31-tooth inner chainring. Its 48-31-tooth configuration sets the standard for gravel cyclists seeking a wide range of gear ratios suitable for both long road rides and adventures on tracks and trails.

Key features

• Shimano GRX genuine part.
• 48-tooth outer chainring.
• Compatible with the Shimano GRX FC-RX810-2 crankset.
• 2x11-speed drivetrain.
• Lightweight and robust aluminium construction.
• Profile optimised for fast and precise gear changes.
• Ideal for gravel riding, bikepacking and long-distance rides.
• Stylish and durable black finish.

FAQ

Is this chainring compatible with all Shimano GRX cranksets?

No. The Y0JR98010 model is specifically designed for the Shimano GRX FC-RX810-2 crankset in a 48-31-tooth double chainring configuration.

Can it be used on a 1x11-speed drivetrain?

This chainring is designed for a double-chainring drivetrain. Its tooth profile and shifting aids are optimised for a 2x11 setup and not for a single-chainring configuration.

What material is it made from?

The chainring is made from aluminium to offer an excellent balance between stiffness, low weight and durability.

Do I need to replace the inner chainring as well?

It isn’t essential. However, if the drivetrain shows significant wear, replacing both chainrings at the same time will restore optimal shifting performance.

Is this chainring suitable for road cycling?

Yes. Although it comes from the GRX gravel range, the 48-tooth chainring allows you to maintain excellent speed on the road whilst retaining the off-road capabilities typical of gravel bikes.