Shimano GRX FC-RX610-1 HTII crankset, 1x12, 40T
Shimano GRX FC-RX610-1 HTII cranks
The FC-RX610 cranks offer all the features of the higher-end RX820 series, but also impress with their excellent price-performance ratio. Due to the slightly simpler choice of materials, they weigh a few grams more, but their stiffness and functionality are at the same high level. The workmanship is also of very high quality and tailored to the intended use, so the cranks will be your faithful companion for many kilometers.Rooted in simplicity, reliability and adventure, the new 12-speed GRX kit provides more shifting options along with unrivaled ergonomics. So riders get the most out of every "non-asphalt" adventure, no matter where it is.
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Optimal gear combination for different terrains and riding styles
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The cranks are designed for 12-speed shifting systems.
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| Groupset | Shimano GRX |
| Gears | 1x12 |
| Crank length | 172.5 mm, 175 mm |
| Recommended bearings | BB-RS501 (Thread) / BB-RS500 (Press Fit) |
| Chainline | 49.7 mm |
| Q-factor | 151 mm |
| Axle diameter | 24 mm (Hollowtech II) |
| Bolt spacing (BCD) | 110 mm |
| Converter | 40T |
| product ID | 248754 |
WARNING
For assistance with installation, adjustment, and replacement of products not found in the user's manual, please consult the place of purchase or a distributor. A dealer's manual intended for professional and experienced bicycle mechanics is available on our website (https://si.shimano.com).
For safety, be sure to carefully read this "user's manual" before use, follow it for correct use, and save it so that you can refer back to it at any time.
The following instructions must be always followed in order to prevent personal injury, physical damage to equipment and the surroundings. The instructions are classified according to the degree of danger or damage that may occur if the product is used incorrectly.
DANGER - Failure to follow the instructions will result in death or serious injury.
WARNING - Failure to follow the instructions could result in death or serious injury.
CAUTION - Failure to follow the instructions could result in personal injury or physical damage to equipment and surroundings.
WARNING:
Do not disassemble or modify the product. This may cause the product to not operate correctly, and you may fall unexpectedly and be seriously injured.
Before riding the bicycle, check that the crank arms are not cracked. If there are cracks, the crank arm may break and you may fall off the bicycle.
Be careful to keep your clothing away from the chain while riding. Otherwise, you may fall off the bicycle.
CAUTION:
Be careful not to touch the teeth of the sprockets. There is a danger of injury.
All the answers to questions about delivery, payment, security, returns, warranty and much else.

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