Pay in installments of $45.38 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 6 - Aug 11
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
GRX FC-RX820-1 40TThe 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 40T 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 40T 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 |
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
4.2 ★★★★★
Based on 19 reviews
Sort
Product Reviews
★★★★★ 3
Does what it does
Does what it does
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 10, 2025
★★★★★ 1
Failed after 2 months
Failed after about 2 months of being used as a battery isolator. When activated, only passes about 2 volts though the contacts on a 12 volt circuit now. Wasted my time and money.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 26, 2025
★★★★★ 4
Works great
I used this to turn on with key on power in my truck. Power then goes through this and turns on my key on fuse panel. That way I can run a much larger cable from the battery to the fuse panel instead of pulling power through the ignition switch, where power output is limited. So far it doesn't get hot, though I am not running anything close to 500 amps through it. More like 75 amps max and even then it's only sometimes. No problems so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 28, 2024
★★★★★ 5
Heavy duty and has lasted three years so far
I have had this relay installed in the engine bay of my Lexus RX 300, functioning to link the front battery to the additional battery in the trunk whenever the ignition is on. The relay has worked reliably for about three years now with no complaints besides one minor comment, be careful when threading down the nut on the Low voltage side. It is prone to stripping
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2025
★★★★★ 5
It delivers as advertised.
Works as advertised, and is easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 18, 2025