Free 2-Day Shipping on Orders Over $50*

Detail Images

  • Castelli - Back
  • Castelli - Free AR 4.1 Jersey - Men's - Anthracite
  • Castelli - Free AR 4.1 Jersey - Men's - White
  • Castelli - Back -

Current Color

  • Castelli - Free AR 4.1 Jersey - Men's - Anthracite
  • Castelli - Free AR 4.1 Jersey - Men's - White

Castelli Free AR 4.1 Jersey - Men's

sale $79.97 $159.9550% Off

Free 2-Day shipping on orders over $50*

Select a Size:

Select options
  • Select options
    • M
    • L
    • XL
    • XXL

    Select a Color:

    Select options
  • Select options
    • Anthracite
    • White

    4 Reviews


    A speedy favorite.

    Putting on the Castelli Free AR 4.1 Men's Jersey won't be enough to win you a spot on the podium of your next race all by itself, but it might help, depending on how hard your legs want to work. Formerly a pared-down racing jersey, the Free AR 4.1 retains its competition pedigree with a few extras added this year to make it a more versatile training jersey too. Castelli employs its most streamlined fit for the Free AR, stitching Velocity fabric into a contoured, flexible design that will move with you through the rigors of a race, reducing drag by ushering air over its dimpled surface without feeling restrictive or tight.

    Added touches like ventilated Nervato underarm panels and soft raw-edge arm grippers lend the Free AR more watts-saving style and long-term comfort this year, and other details like a neck-saving zipper flap and four rear pockets, three open and one zippered, make this a piece you shouldn't hesitate to throw on before a pre-race taper ride or mid-season training day with your ride group.

    • Velocity dimpled fabric
    • Raw-edge mesh arm grippers
    • Neck-protecting zipper flap
    • 1 zippered, 3 rear pockets
    • Item #CST00B1

    Tech Specs

    [front & shoulders] Velocity, [armholes] Nervato
    aero race
    1 zippered rear, 3 rear
    Recommended Use
    road cycling
    Manufacturer Warranty
    1 year

    Tech Specs

    • Reviews
    • Q & A

    What do you think about this product?

    Have questions about this product?

    Go-to jersey.

    • Familiarity: I've put it through the wringer
    • Fit: Runs small
    • Size Bought: XL

    Just like the free aero shorts, this is my workhorse jersey for everyday rides after trying them on. And just like the shorts, they beat Pearl Izumi in every way. The fit forms to your body instead of a club fit, the white doesn't fade or retain stains, and the pockets are bigger.

    Did I mention that it just looks good? The asymmetrical collar is a bit hard to get used to (one side is shorter near the zip to show the red flap), but everywhere else it looks great.

    For those who want a looser fit, however, look elsewhere. This is made for aerodynamics so there's no flapping material. And yet the material is so stretchy that it doesn't feel like you're a stuffed sausage.

    As with their shorts, a Pearl Izumi large sizes into a Castelli XL.

    Great Fit

    • Familiarity: I've used it once or twice and have initial impressions
    • Fit: True to size
    • Size Bought: Medium

    First time buying some castelli kit, those italians sure know how to make something special!, I love the kit. I try to wear it just for special ocassions

    Great Fit

    Castelli and the Three Bears

    • Familiarity: I've put it through the wringer
    • Fit: True to size
    • Size Bought: Small

    I'm relatively new to Castelli after many years of Pearl Izumi. I'm 65 years old, short and skinny, so a trim fitting kit is desirable and hard to find.

    The Three Bears story unfolded this way:
    First Bear: purchased the Velocissimo and while it fit fine in the chest and shoulders, it was saggy/baggy in the lower torso, loose in the sleeves, and flappy in the wind.
    Second Bear: tried the Prologo 3 with "slim" fit and it was a bit better fit in the lower torso, the sleeves were loose and overall too loose.
    Third Bear: out of the box, the Aero Race fit was a little too tight. But after several rides it relaxed and now fits like a second skin. Just right.

    Well-designed patterning is important but programming the 4.1 with several fabrics, each with a separate functional intent, is equally if not more important. The materials used along the front, sides, back and pockets are very light and porous (hold one of these jerseys up to a back light and you'll know what I mean) yet the structure of the fabric is differentiated (outer face vs. inner face) to deflect, absorb and transport heat, cold and moisture. Raw edges and/or siliconized cuffs transition these areas into smooth, flat-laying surfaces to the skin. Modern cycling apparel from Castelli (and others) just work and fit better in a wider range of conditions than apparel fabricated of non-differentiated patterns and materials.

    So, I'll follow the example of the Three Bears and stick with Rosso Corsa Aero Fit kit.