Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 11 - Jul 16
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
microSHIFT M21 Rear Derailleur - 6,7 Speed, Long Cage, Dropout Claw Hanger, BlackM21 rear derailleurs are designed to work with 6 and 7 speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs. Robust composite and steel construction Compatible with Shimano 6 and 7 speed mountain and road systems Product Specifics Rear Derailleur Mount Type: Dropout Claw Hanger Rear Der Shifter Compatibility: Shimano Mountain Cage Length: Long Drivetrain Speeds: 6 Drivetrain
M21 rear derailleurs are designed to work with 6- and 7-speed Shimano road and mountain shifters. Enjoy the wide variety of bikes you can get going again with M21 rear derailleurs.- Robust composite and steel construction
- Compatible with Shimano 6- and 7-speed mountain and road systems
Product Specifics
- Rear Derailleur Mount Type: Dropout Claw Hanger
- Rear Der/Shifter Compatibility: Shimano Mountain
- Cage Length: Long
- Drivetrain Speeds: 6
- Drivetrain Speeds: 7
- Weight: 316
- Color: Black
- Chain Wrap Capacity (teeth): 43
- Largest Cog: 32
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: Not available
EAN: 4710495436357
Manufacturer Part Number: RD-M21LA
RD0211
167891-Q0-L
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 1983 reviews
Sort
Product Reviews
★★★★★ 3
Not for us!
Size: Large, Color: Antler
I'm sure for a dog that doesn't chew, would be great. Ours went through it in days, leaving sharp shards and making his gums bleed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
★★★★★ 5
Good quality. My puppy loves these
Color: Colorful
Good quality. Great for teething puppies.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2026
★★★★★ 5
Leak’s a little
Color: Colorful
Dog loves them. Stopped her from chewing on me!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 21, 2026
★★★★★ 4
Not Durable Enough
Color: Colorful, Color: Colorful
These worked SO WELL...
For one night. Maybe my pupper is just super destructive with his chewing, but he had a chunk of the top of the pineapple off less than 10 minutes after opening the package.
That being said, the concept is perfect. He is very active when I'm trying to settle him down for the night if he hasn't had enough activity during the day. This translated to him trying to chew everything (including my arm, and RIP my comforter...) I wanted to find something for him to chew on that would help sooth his teeth/gums, since the other toys he loves weren't interesting enough to keep him engaged. Unfortunately, despite one night of his chewing relaxation, he chewed right through them.
At least I know the concept of a frozen chew toy is the correct intervention. I'm just sad that these were destroyed so quickly!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 18, 2024
★★★★★ 3
Be careful. It can be swolled
Color: Colorful
These work for a little bit but very easy to chew up. They stay cold for a good while but to easy to chew up and be swollen
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026