Shimano GRX FC-RX610-1 Chainring | 110 BCD | 2x12-speed

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Brand: Shimano

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Shimano GRX FC-RX610-1 Chainring | 110 BCD | 2x12-speed

Shimano GRX drivetrain chainrings

Shimano GRX chainrings are designed for gravel bikes and mixed-surface riding, where the drivetrain must perform reliably in dust, mud and rough terrain. These are replaceable crankset chainrings made for the GRX component family, making it easy to replace worn parts and keep shifting smooth and consistent on long rides, training sessions or gravel races.

Key features:

Configuration options: available in 1x and 2x setups to match different riding styles and terrain.
Drivetrain compatibility: versions are available for 11-speed and 12-speed GRX systems (choose based on your crankset generation).
2x chainring combinations: 2x11 typically uses 46-30T, while 2x12 uses 48-31T or 46-30T (depending on the model).
1x chainring sizes: for 1x GRX cranksets, 40T and 42T options are available (for 11- and 12-speed versions depending on the model).
Chain retention in 1x systems: 1x chainrings feature the DYNAMIC CHAIN ENGAGEMENT+ tooth profile for improved chain retention and a smoother pedalling feel.
Increased tyre and frame clearance: GRX crankset solutions use a wider chainline (approx. +2.5 mm) to provide more clearance for tyres and the frame.
Mounting standards: most commonly uses a 110 BCD asymmetric 4-bolt pattern, while 2x GRX rings may use an 80/110 mm asymmetric BCD (inner/outer ring).
Crankset-specific compatibility: chainrings are made for specific GRX crankset series (e.g. RX600/RX810 11s, RX610/RX820 12s), so when replacing, choose according to your crankset model and speed count.

Bolt Circle Diameter (BCD)	110 mm
Mounting	4-arm
Shifting	12
Material	Aluminum

Shimano GRX chainrings are designed for gravel (mixed-surface) and adventure bikes. They are built to deliver reliable drivetrain performance and stability on rough roads, gravel tracks and off-road terrain.

GRX chainrings are compatible with Shimano GRX drivetrain systems, including 2x10, 2x11, 2x12, 1x11 or 1x12 setups, depending on the specific model and groupset configuration.

Yes. GRX chainrings are a great option for everyday riding, especially if you ride on different surfaces such as asphalt, gravel roads or light off-road trails. They are more durable and better suited to off-road conditions than traditional road chainrings.

GRX chainrings are built specifically for gravel and adventure use, so their construction and tooth profiling are optimised for better stability on uneven terrain. Compared to road groupsets, GRX components are typically more robust, offer wider compatibility options, and focus more on off-road performance.

When choosing GRX chainrings, consider your preferred drivetrain setup (1x or 2x), compatibility with your current crankset, and the number of speeds in your drivetrain. Each chainring specification helps you select the best option for your riding style and bike purpose.

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Differences can arise for various reasons, including but not limited to, changes made by the manufacturer in the design, composition or colors of the products, as well as due to the settings of different monitors, which can change the color or appearance of the items.

Therefore, we encourage customers to consider this information before making a purchase decision, and if there are any questions regarding the specifications or appearance of a product, please do not hesitate to contact our customer service department for further information or clarification.