X
Mon-Sat 8am-5pm PT
FREE SHIPPING ON ORDERS OVER $50More info
JOIN OUR EMAIL LISTSign Up
Bike Tires Direct logo. Link to homepage.
Serving cyclists
since 2002
CLICK HERE to join our Email List and get 15% off your first order*
*Restrictions Apply. Click for details.

Crumbs

Product Images

Castelli Fast Feet 3 Sock Electric Lime
Castelli Fast Feet 3 Sock Black
Castelli Fast Feet 3 Sock White
Electric Lime
Click Here for Larger Image
Castelli Fast Feet 3 Sock 3
Castelli Fast Feet 3 Sock 2
Castelli Fast Feet 3 Sock 1

Castelli Fast Feet 3 Sock

(1)

Pricing and Order Section

Mfg PartNum:
Sale Ends
Today
Purchase this popular item
today and save 30%
SALE: $34.99 pr
MSRP: $49.99
That's 30% off
In Stock
Ships Free!
Earn $1.75 in VIP credit. Click to Learn More.
175
POINTS
This color/size is not eligible for VIP points
Price matches are is not eligible for VIP points
 

Description

This Sock Saves Watts

The Castelli Fast Feet 3 Sock is for road racing when you can't wear a Fast Feet TT Shoecover.

Features:

  • Castelli's Fast Feet project — for riding in warm conditions
  • The foot portion is based on the Castelli Rosso Corsa Sock for in-shoe comfort
  • Polyurethane grip strip at top to keep sock in place
  • Leg portion constructed with engineered grooved Lycra® to help detach airflow

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.

Size Chart

S/ML/XLXXL
Shoe Size
35-3940-4344-47   

Specifications

Fabric Type: Synthetic 

Cuff Height: Crew 

White - S/M

Mfg PartNum: R4525030001-2 

White - L/XL

Mfg PartNum: R4525030001-4 

White - 2X-Large

Mfg PartNum: R4525030001-6 

Black - S/M

Mfg PartNum: R4525030010-2 

Black - L/XL

Mfg PartNum: R4525030010-4 

Black - 2X-Large

Mfg PartNum: R4525030010-6 

Electric Lime - S/M

Mfg PartNum: R4525030383-2 

Electric Lime - L/XL

Mfg PartNum: R4525030383-4 

Electric Lime - 2X-Large

Mfg PartNum: R4525030383-6 

Reviews

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
(1)
(0)
(0)
(0)
(0)
(100%)
(0%)
(0%)
(0%)
(0%)
Reviewed 8/21/2025
by Trucker
Cycling Enthusiast
Amador county in CA.
Value Rating
Overall Rating
Very comfortable along with good looks.

These are really a quality feeling sock and by far the most expensive socks I've ever purchased. Have gotten quite a few positive comments . Will be interesting to see how they hold up . I ordered white ones. I hand wash them. For longevity it's probably a good idea to not put them in the dryer.

When and if they are a "Daily Special" I'll get another pair.

Was this review useful to you? Yes/No
Thank you for your feedback.
additional content loading
additional content loading
additional content loading

We are committed to delivering outstanding value and service to our customers, every day.
Try us today to see why so many of our customers come back again and again.

*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. 13

5741 NE 87th Ave (I-205 exit 23B) Portland, OR 97220 | 800-682-0570 | [email protected]