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since 2002
In Stock & Ready To Ship — XT/Ultegra RT-MT800 Disc Rotors
Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock
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Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock
Castelli Womens Go 15 Sock

Castelli Women's Go 15 Sock

Mfg PartNum:
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Your New Go-To Sock

No more wasting time on cycling socks that just aren't worth the effort. Instead of searching through the hamper for your favorite pair or cursing out the sock-hungry dryer, motivate yourself to get up and go with the all-new Castelli Go 15 Sock.

Comfort is crucial when you ride mile after mile. Pedal like you mean it with an ultra-cozy merino wool blend, which maintains warmth while also managing moisture for stink-free performance. Nylon reinforcement in the heel and toe is perfect for your favorite shoe, while a tall 15cm cuff rides high and proud.

Make your year with the Go 15, the sock designed for ultimate comfort on two wheels. Multiple color options are sure to match your favorite cycling outfit, with durability to last ride after ride.


  • Merino wool blend
  • Full-length protection
  • 15cm cuff

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.


Cuff Height: Crew 

Fabric Type: Synthetic 

White/Fuchsia - S/M

Mfg PartNum: R4521557001 

White/Fuchsia - L/XL

Mfg PartNum: R4521557001-4 

Dark Gray/White-Red - S/M

Mfg PartNum: R4521557030-2 

Dark Gray/White-Red - L/XL

Mfg PartNum: R4521557030-4 

Brilliant Pink/Bordeaux-Light Blue - S/M

Mfg PartNum: R4521557288-2 

Brilliant Pink/Bordeaux-Light Blue - L/XL

Mfg PartNum: R4521557288-4 

Bordeaux/Brilliant Pink-White - S/M

Mfg PartNum: R4521557421-2 

Bordeaux/Brilliant Pink-White - L/XL

Mfg PartNum: R4521557421-4 

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*Orders received before 3:00PM Pacific time are shipped the same day (Mon-Fri). Orders over $50
are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 79


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