Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 7 - Jul 12
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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
4.4 ★★★★★
Based on 111 reviews
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Product Reviews
★★★★★ 4
Close to Perfect
First ball I picked out of the box the squeaky didn't work. 1 out of 24 not bad.
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Reviewed in the United States on March 2, 2026
★★★★★ 5
Best balls ever!
Color: Multicolor, Size: 6 PACK, Color: Multicolor, Size: 6 PACK
Rocco sleeps with them
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Reviewed in the United States on May 23, 2026
★★★★★ 5
Dog Toy
I am extremely pleased with Swingers Squeaky 2.5inch Tennis Balls for Dogs purchase. The balls I received were exactly as described in the write up and shown in the pictures. Quality craftmanship, safe and rugged design - exceeded my expectations. They were securely wrapped and carefully packaged. Seamless transaction, prompt shipping. Great A+ value!
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Reviewed in the United States on April 7, 2026
★★★★★ 5
Great
Color: Multicolor, Size: 24 PACK
Our dog is a tennis ball addict and is more than thrilled with these! He occasionally tears one up but most last a few months.
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Reviewed in the United States on April 12, 2026
★★★★★ 5
AWESOME HEALTHY DENTAL TREATS for any dog.
Pattern Name: Half Ears (40-pack)
THESE ARE AWESOME!! Though I need to cut these pig ears with an industrial pair of sheers (cutting scissors), my three 6 lb Chihuahuas LOVE these treats. It also keeps them busy chewing so daddy can get some work done. They are most importantly great for cleaning my dogs tiny Chihuahua teeth. 😁😉. These are a MUST BUY for anyone seeking a healthy, affordable, teeth-cleaning option for any size dog.
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Reviewed in the United States on April 24, 2026