Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 10 - Jul 15
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
microSHIFT M21 Rear Derailleur - 6,7 Speed, Super Short Cage, 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: 10x1 Standard Rear Der Shifter Compatibility: Shimano Mountain Rear Der Shifter Compatibility: Shimano Road Cage Length:
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: 10x1 Standard
- Rear Der/Shifter Compatibility: Shimano Mountain
- Rear Der/Shifter Compatibility: Shimano Road
- Cage Length: Short
- Drivetrain Speeds: 6
- Drivetrain Speeds: 7
- Weight: 241
- Color: Black
- Chain Wrap Capacity (teeth): 21
- Largest Cog: 32
Today's Stock Status
10+ Available to ship in 2-4 Business Days
UPC: Not available
EAN: 4710495436388
Manufacturer Part Number: RD-M21SS
RD0222
167898-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 1681 reviews
Sort
Product Reviews
★★★★★ 5
great set
Color: Silver, Size: Rechargeable
Love this. it's been holding up well and haven't had any issues with it at all. Charge holds a while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
Beautiful set
Color: Silver, Size: Rechargeable
So far love this set. It was a gift for my boyfriend and he loves it. The look is perfect, and so far functions as expected. Also the charge has lasted for months so far.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
Great product
Color: Silver, Size: Rechargeable
No more batteries dead when you need it most! Love them
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
★★★★★ 5
Better than most
Color: Silver, Size: Rechargeable
Very awesome. Works better than expected. Very easy to use and refill when it runs out. Highly recommend!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
★★★★★ 5
Very good quality
Color: Silver, Size: Rechargeable
There very nice. Battery is very durable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 2, 2026