Castelli Free Aero Race 4 Shorts (Black)
Castelli Free Aero Race 4 Shorts (Black)
Castelli Free Aero Race 4 Shorts (Black)
Castelli Free Aero Race 4 Shorts (Black)
Castelli Free Aero Race 4 Shorts (Black)

Castelli Free Aero Race 4 Shorts (Black)


Regular priceRs. 9,499
Tax included.


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The Free Aero Race 4 Bibshort is our top race short, which also means that it's insanely comfortable even if you never pin on a number.

The original Free Aero Race Bibshort has first introduced over a decade ago and has logged literally millions of kilometers under the backsides of our sponsored pro riders and has been the best-selling short both in the Castelli retail collection and in our Servizio Corse custom program. Over this time the short has undergone numerous updates and improvements in the never-ending quest to create the best short we can make. While the basic concept of a minimalist workhorse pro-level comfortable race short remains, every single fabric, component, stitch, and construction method has been updated and improved over time.XXXThe fourth major generation of the short features the updated Progetto X2 Air Seamless seat pad. This pad separates a soft, stretchy skin care layer that moves with your body from a generously padded cushioning layer that replicates the form of your saddle. Eight-hour rides are no problem.

Of course, the fabrics are premium, made to our specifications by Italy's best fabric suppliers. The Forza fabric on the inner leg features 38% Lycra® content for a perfect fit, while the Vortex fabric on the side panels is dimpled for aerodynamics. And it's held in place by the latest iteration of our seamless flat Giro leg gripper.

  • Vortex dimpled fabric on legs for aero performance

  • Forza fabric on inner legs with 38% Lycra® content for perfect fit

  • Giro4 leg gripper elastic for better grip distributed over larger area

  • Doppio V construction in front for increased support and comfort

  • Flat-lock stitching

  • Progetto X2 Air Seamless seat pad

  • 15°-35°C / 59°-95°F

  • Weight:172g


Gender Men
Padded Liner Yes
Material main fabric: 62% polyamide, 38% elastane sides, lower back: 79% polyamide, 21% elastane
back: 74% polyamide, 26% elastane


We love happy customers. Our 7-day Easy Returns Policy is a basic structure to support you effectively. If you need any further assistance, just reach out and we're happy to help.

To be eligible for a Return, please make sure of the following
- Products must be unused, unwashed and in re-sellable condition
- Products must be in their original condition with all original tags, manuals, and packaging intact
- Packaging should not be broken, opened or tampered with
- You need to have a receipt or proof of purchase
- All promotional items shipped along with the purchased item must be returned

The following product categories cannot be Returned or Exchanged - Bicycles, Trainers, Wheels, Rims, Floor Pumps, Frame-set, Forks/Suspensions, Work Stands, Car Racks, Socks, Masks, Nutrition items and Sunglasses.

Equivalent store credit will be issued in case we're unable to source the agreed upon exchange/replacement. The store credit can be used to purchase other products online at

Do check our detailed Returns & Exchanges Policy for more information.

If you need any further assistance, just reach out and we're happy to help.

Customer Reviews

Based on 1 review
The best cyclying shorts

So comfortable for long rides. The BEST