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- USA
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Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
GRX RX815 Rear Derailleur (11-Speed)GRX RD RX815 Di2 Rear Derailleur FEATURES: Operates with Shimano Di2 for digital electronic shifting Gravel tuned clutch tension provides smooth and reliable mixed surface shifting For 1x and 2x drivetrains SPECS: Color: Black Largest Cog: 34 Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10x1 Standard Chain Wrap Capacity (teeth): 38 Cage Length: Long Rear Der Shifter Compatibility: Shimano Road Di2 Drivetrain Speeds: 11 Weight: 287
GRX RD-RX815 Di2 Rear Derailleur
FEATURES:
- Operates with Shimano Di2 for digital electronic shifting
- Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
- For 1x and 2x drivetrains
SPECS:
- Color: Black
- Largest Cog: 34
- Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10x1 Standard
- Chain Wrap Capacity (teeth): 38
- Cage Length: Long
- Rear Der/Shifter Compatibility: Shimano Road Di2
- Drivetrain Speeds: 11
- Weight: 287
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 1929 reviews
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Product Reviews
★★★★★ 5
My favorite socks.
Size: Medium, Color: (001) Black / Black / Pitch Gray
I love these socks. Whe. The time comes to replace them, I will be replacing them with the exact same ones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 27, 2025
★★★★★ 5
Great socks!!!
Size: X-Large, Color: Beige/Cream/Green
Great product. Fit and comfort outstanding
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2026
★★★★★ 5
Comfortable and good fit.
Size: Large, Color: Black
Nice and comfortable Under Armour socks. Great buy!
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Socks
Size: Medium, Color: Beige/Cream/Green
These socks are great. Love them. Very warm too.
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Reviewed in the United States on May 14, 2026
★★★★★ 5
good but pricey
Size: X-Large, Color: White / Steel - 100
good materials, size fits, very soft and durable but is a bit expensive
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Reviewed in the United States on May 5, 2026