Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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For Your Every Summer RSVP, with Code: SUMMER15
Description
GRX Di2 RD-RX817GRX Di2 11 speed rear derailleur for 1X cranks Adjustable chain stabilizer prevents chain slapping and drops Gravel tuned clutch tension can be toggled ON OFF to match the terrain Low sprocket: Max. 42T Min. 40T Top sprocket: 11T Attributes Cage GS Max Front Difference Single chainring only Maximum Cog 42T Minimum Cog 11T Primary Color Grey RD Capacity 31T RD Spring Type Shadow Plus RD Weight 318g Speed 11
- GRX Di2 11 speed rear derailleur for 1X cranks
- Adjustable chain stabilizer prevents chain slapping and drops
- Gravel-tuned clutch tension can be toggled ON/OFF to match the terrain
- Low sprocket: Max. 42T/Min. 40T
- Top sprocket: 11T
Attributes
| Cage | GS |
| Max Front Difference | Single chainring only |
| Maximum Cog | 42T |
| Minimum Cog | 11T |
| Primary Color | Grey |
| RD Capacity | 31T |
| RD Spring Type | Shadow Plus |
| RD Weight | 318g |
| Speed | 11 |
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
4.3 ★★★★★
Based on 870 reviews
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Product Reviews
★★★★★ 3
I wanted it to be a good fit
Color: Red
This toy garnered my dogs attention for a day. We tried it inside but there's too many places it would go under. We tried ot outside and it was powerful enough in the grass so tried concrete patio. My dog lost interest sadly. It wasn't a good product for my dog.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
★★★★★ 5
My pup loved it.
Color: Red
“Bought this for my dog Loki and it was an instant hit. He usually loses interest in toys pretty quickly, but this ball kept him entertained way longer than expected. The lights and movement immediately grabbed his attention, and he spent a solid hour chasing, pawing, and carrying it around the house.
It’s durable enough for excited play, easy to charge/use, and even survived Loki’s dramatic ‘victory laps’ through the living room. Bonus: it tired him out enough for an actual nap afterward. Definitely worth it for high-energy dogs or curious pets.”
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Great toy to occupy pet
Color: Red, Color: Red
This ball is super fast, and lasts very long on one charge. It really keeps my cat entertained, he’s just so curious about it. It’s easy to pick out dust any hair it might catch on, it’s rubber material is durable. It’s a stable toy since my cat likes to play roughly.
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Reviewed in the United States on May 16, 2026
★★★★★ 5
Great for Puppies!
Color: Red
This toy has been a great purchase for my new puppy! He has so much fun playing with it and stays engaged for long periods. While it can move a little fast at first, the adjustable speed settings make it easy to customize. Overall, it’s a fantastic toy that keeps him active, entertained, and happy.
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Reviewed in the United States on June 12, 2026
★★★★★ 4
Good for (non-destructive) small dogs
Color: Red
Bought for a small dog, would not recommend for a destructive chewer. After some initial hesitation this has become her favorite toy and keeps her entertained for a good while. The different settings provide some variety to how she can play with it. The battery only lasts about an hour, but it does charge quickly. As others have noted the string is garbage.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2026
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