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Ships within 48 hours · Estimated delivery Aug 7 - Aug 12
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Description
GRX FC-RX820-1 42TThe new FC RX820 1 crank balances weight and efficiency for mixed terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm. GRX 12 speed, hollow arm 1X crankset. Narrow wide 42T chainring. Gravel specific gearing ratios with 1X simplicity and wide range gearing. Bottom Bracket : Not included SM BBR60 SM BB72. Chainline: 50. 1mm. Attributes BB Inclusion No BCD 110
- The new FC-RX820-1 crank balances weight and efficiency for mixed-terrain riding. Gearing options cater for the specific demands of gravel riding and to maintain tighter gear steps for maintaining pedaling rhythm.
- GRX 12 speed, hollow arm 1X crankset.
- Narrow-wide 42T chainring.
- Gravel specific gearing ratios with 1X simplicity and wide-range gearing.
- Bottom Bracket : Not included - SM-BBR60 / SM-BB72.
- Chainline: 50.1mm.
Attributes
| BB Inclusion | No |
| BCD | 110 |
| Chainline | 49.7mm |
| Crank Spindle Diameter | 24mm |
| Crankset Material | Aluminum |
| Drivetrain Spacing | Road Disc |
| Interface | Hollowtech II |
| Pedals Thread | 9/16'' |
| Primary Color | Black |
| Speed | 12 |
| Teeth | 42 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 29 reviews
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Product Reviews
★★★★★ 4
Genuine parts that keep my S1 Pro running like new
Fit & Quality:
Everything fit perfectly on my Eufy Omni S1 Pro — the rollers snapped right in, and the filters matched the originals exactly. You can tell these are genuine Eufy parts, not knockoffs.
Performance:
After swapping the brushes and mop roller, my vacuum immediately started cleaning better again. Suction improved, and it picked up fine dust I hadn’t noticed before.
Ease of Use:
Installation took less than ten minutes. Everything comes sealed and labeled clearly, which makes it simple to replace parts without guessing.
Value:
It’s a little pricey compared to third-party kits, but the quality and compatibility are worth the extra few bucks.
Verdict:
Solid replacement set that restores performance to like-new.
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Reviewed in the United States on November 2, 2025
★★★★★ 5
Great aftermarket substitute items
Great quality and fit
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Reviewed in the United States on December 16, 2024
★★★★★ 5
Must have along with the Eufy S1 Pro...
A very nice addition to an already great product.
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Reviewed in the United States on April 29, 2025
★★★★★ 5
Good quality
Good quality replacement parts
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Reviewed in the United States on October 1, 2024
★★★★★ 5
Supplies
I haven't use any of them yet but looks good
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Reviewed in the United States on September 17, 2024