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Ships within 48 hours · Estimated delivery Sep 8 - Sep 13
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Description
Wheels Manufacturing SOLO-SPEED Cog - 21t, Fits SOLO-SPLINE and SOLO-XD kits, BlueWheels Mfg. SOLO XD and SOLO SPLINE Single Speed cogs are constructed with high end 7075 aluminum and designed with narrow to wide alternating tooth pattern allowing for superior chain retention. Cogs are optimized for use with Wheels Mfg. SOLO XD XD XDR and SOLO SPLINE Single Speed Conversion kit carrier systems only. Crafted with high end 7075 aluminum for light weight and extreme durability Cogs are optimized for use with Wheels Mfg. SOLO XD XD XDR
Wheels Mfg. SOLO-XD and SOLO-SPLINE Single Speed cogs are constructed with high-end 7075 aluminum and designed with narrow to wide alternating tooth pattern allowing for superior chain retention. Cogs are optimized for use with Wheels Mfg. SOLO-XD XD/XDR and SOLO-SPLINE Single Speed Conversion kit carrier systems only.- Crafted with high-end 7075 aluminum for light weight and extreme durability
- Cogs are optimized for use with Wheels Mfg. SOLO-XD XD/XDR and SOLO-SPLINE Single Speed Conversion kit carrier system only
- Designed with narrow wide alternating tooth pattern allowing for superior chain retention
- Fits 9, 10 and 11-speed chains
- Compatible with 12-speed SRAM Eagle, KMC, SRAM Road and SRAM T-Type Transmission flattop chains
- Will not work with 13-speed Campagnolo or 12-speed Shimano HG+ chains
Product Specifics
- Tooth Count: 21
- Cassette Body Type: Shimano Micro Spline
- Cassette Body Type: SRAM XD
- Cassette Body Type: SRAM XDR
- Material: Aluminum
- Defined Color: Blue
Today's Stock Status
1 Available to ship in 2-4 Business Days
UPC: 810124712938
EAN: Not available
Manufacturer Part Number: SOLO-COG-21T-6
FW0378
185261-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
4.6 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 3
Socks
Color: Blue & Green, Size: Medium
They are about what I expected for the price. Nice and warm, but they pill a lot and sit higher on my ankle than I'd like. Very cozy and comfy though. Great around the house, not really great for hiking though. Kinda thin after a few uses outdoors. Washable but not very durable.
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Reviewed in the United States on November 21, 2025
★★★★★ 5
Great Sox
Color: Grey & Blue, Size: Large
Very comfortable, nice colors.
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Reviewed in the United States on April 3, 2026
★★★★★ 5
Great socks!!
Color: Black & Grey, Size: Medium
Love these socks. I am on my feet all day and other socks sweat, my feet are uncomfortable. These keep the moisture way from my feet and they are soft too. These were a great find and I highly recommend them.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
These are my favorite socks
Color: Blue & Green, Size: Medium
Theses socks are so comfortable perfect size and thickness theses were the only socks I took on a 2 week Ireland trip with me.
These are a great value for your money and they look so cute on, I could not find any socks in Ireland that were as soft and have the durability that these have.
I highly recommend! I am a sock lover also and picket about texture.
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Reviewed in the United States on October 19, 2025
★★★★★ 5
Dog approved
Color: Colorful, Size: Medium
Favorite bag for my dog
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Reviewed in the United States on May 30, 2026