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Castelli Men

Castelli Men's Free AR 4.1 Jersey

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Based on the 4th iteration of Castelli's podium worthy Aero Race jersey, this version represents a race-inspired jersey with more creature comforts than its watt chasing protégé. By incorporating a zippered rear pocket, a flap behind the zipper to protect your neck, updated Velocity dimpled fabric on the front and an angled pocket for easier access, the Free Aero Race 4.1 has become the ideal all-rounder. While casual enough for the group ride, this jersey is equipped with the technology to dial in a pace that'll turn the ride inside out.

Note: Castelli apparel is designed with a performance cut that often runs smaller than that of other manufacturers. Consider sizing-up one size to ensure a comfortable fit — e.g., if you normally wear a Medium, select a Large in Castelli. Feel free to contact us with any questions or concerns.

Features & Specs:

  • Velocity dimpled fabric on front and shoulders for improved wicking and fast drying
  • Nervato fabric at armholes for improved aerodynamics
  • Full-length YKK® Vislon® zipper with neck protector
  • Zippered rear pocket
  • Mesh raw-edge arm grippers


Sleeve Type: Short Sleeve 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 9/2/2019
by sbmram
Cycling Enthusiast
New York,NY
Overall Rating
Sharp looking jersey

Form fitting and looks great! Zipper pocket is a great idea.

Order one size up.-

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Reviewed 5/27/2019
by Danimal
Competitive Racer
Overall Rating
1 of 2 customers found this review helpful.
Best FIT

I'm not a skinny climber so this jersey fits a muscular guy like me. Also it does not have the extended tail on the pockets, which I dont like. Castelli always runs small, with quality and great graphics. 5stars

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Reviewed 5/6/2019
by Anonymous
Cycling Enthusiast
Portland, OR
Overall Rating
1 of 1 customers found this review helpful.
Great design, inside and out!

An attractive jersey, designed for performance, while still offering plenty of comfort.

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