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Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
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Description
Shimano Saint RD-M820-SS1 Rear Derailleur - 10 Speed Short Cage BlackShimano Saint RD M820 Rear Derailleurs Shadow+ chain stabilizer provides a simple, lightweight chain control solution Mode Converter allows the derailleur to track different type of cogsets DH mode is a close ratio mode to track up to a 23T 28T low gear AM mode is optimized for a wider ratio cogset with a 32T 34T low gear Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Derailleur Mount Type: Shimano Rear Direct Mount Rear Der Shifter
Shimano Saint RD-M820 Rear Derailleurs- Shadow+ chain stabilizer provides a simple, lightweight chain control solution
- Mode Converter allows the derailleur to track different type of cogsets
- DH mode is a close ratio mode to track up to a 23T-28T low gear
- AM mode is optimized for a wider ratio cogset with a 32T - 34T low gear
Product Specifics
- Rear Derailleur Mount Type: 10x1 Standard
- Rear Derailleur Mount Type: Shimano Rear Direct Mount
- Rear Der/Shifter Compatibility: Shimano Mountain
- Cage Length: Short
- Drivetrain Speeds: 10
- Weight: 280
- Color: Black
- keyword search: Shimano2018
- Chain Wrap Capacity (teeth): 25
- Largest Cog: 36
Today's Stock Status
1 Available to ship in 2-4 Business Days
UPC: 689228299689
EAN: Not available
Manufacturer Part Number: IRDM820SS1
RD8200
156179-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
4.5 ★★★★★
Based on 228 reviews
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Product Reviews
★★★★★ 5
Works great!
Color: Lavender Luxury
Kind of surprising but these actially work and are comfortable. I noticed a difference in my calloused heels after the first use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2026
★★★★★ 5
Best thing ever!
Color: Lavender Luxury
These are the best thing ever! Put your favorite foot balm on then cover your heels with these socks and go to bed. You’ll wake up with the softest feet and no cracked heels!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
★★★★★ 4
Works well if you wear them every day
Color: Lavender Luxury, Color: Lavender Luxury
These heel socks do work, but you need to be consistent and patient. The socks are soft with a gel lining on the inside that basically traps your body heat and moisture—kind of like a mini spa for your feet. My heels felt noticeably softer after just one hour of wearing them.
That said, I don’t love sleeping with socks on, so it took me two nights to get used to them. I even took them off the first night because I couldn’t stand the feeling. After five nights of use with nightly exfoliating, my heels are definitely softer, but still cracked in some areas. I’m hoping they keep improving with continued use.
If you stick with it and exfoliate regularly, these socks definitely help soften rough skin. Not a miracle fix overnight, but a helpful tool for healing cracked heels.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 6, 2025
★★★★★ 5
Amazing product
Color: Teal Tranquility
Great product worked within a week of consistent use
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Reviewed in the United States on April 23, 2026
★★★★★ 5
Comfortable
Color: Teal Tranquility
Love these. They do the job!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
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