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Castelli Men

Castelli Men's Free Aero Race Bibshort Kit Version

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The Castelli Free Aero Race Bibshorts have been a staple in Castelli's performance cycling line-up for years. Combining their excellence in fabric and design with the input of professional riders and tested on the world's stage, the Free Aero Race bib delivers lightweight comfort with targeted support for all-day rides or high-output races.

It's namesake lies in the marriage between its lightweight, minimalist mesh upper and dimpled, aerodynamic bottom. Castelli's Carré engineered lie-flat bib strap construction features airy mesh fabric for minimal coverage, and the maximum in breathability. Down below, Vortex dimpled fabric helps smooth the airflow over the legs, maximizing your performance. Inside their Progetto X2 Air chamois delivers optimal cushioning and support, featuring a layer of multi-density supportive padding and a layer of soft, antibacterial fabric against the skin.

This Kit version of the Free Aero Race Bib Shorts has been designed to match their Free AR 4.1 Jersey.


  • Free mesh upper is minimalist with lie-flat bib straps for optimal comfort.
  • CarrĂ© engineered lie-flat bib strap construction for minimal coverage, maximum comfort.
  • Doppio V construction in front for increased support and comfort.
  • Progetto X2 Air seat pad for even greater comfort.
  • Vortex dimpled fabric on legs for improved aero performance.
  • Flat lock stitching throughout.
  • Claimed weight: 178 grams.

Discount Codes are not applicable to Closeouts.

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Style Type: Bibs 

Ordered by Most Relevant First
5 stars
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1 stars
Reviewed 10/5/2018
by Anonymous
Overall Rating
Excellent bib short

These will become my go to bib short. I like everything about them. I am 5'8 and 138lb and ordered a medium and the fit is perfect

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Reviewed 9/17/2018
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
Comfortable bibs

These bibs went through a tryout rides of 30, 50, 65 miles, then a 65 mile tandem ride and finally a century. Comfortable, no chafing and no hot spots. My new favorite bibs.

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Reviewed 8/29/2018
by Anonymous
Casual Cyclist
Value Rating
Overall Rating
great fit, comfortable

Great fit, comfortable over long rides on the weekend.

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Reviewed 11/23/2018
by Michael
Cycling Enthusiast
lower thumb area of MI
Overall Rating
comfortable & snug fitting

This is the 3rd pair of these I've purchased from Western. I'm 5'7 & 130 lbs & a small fits me fine. The pad is not overdone but provides good comfort. I'm not a long distance guy, usually 30-50 miles, so I can't say what they'd be like on a century, but I don't have issues with discomfort on those rides. I've had my first pair 2-3 years now & don't notice any wear issues. I do get some redness/chafing, but no more so & generally less than with other bibs (Bellweather, Assos, Voler, DeMarchi, Santini, etc) that I've used. Because of my body type I like Castelli in general & think these bibs are a good buy at the price Western frequently sells them at, which is good for a race level bib.

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Reviewed 8/10/2018
by John smith
orlando, florida
Overall Rating
Good bibs

Great bibs...I have several pairs...only negative is the stitching on the pads gets loosefails after about 20 washes.

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Reviewed 6/11/2018
by Joaquin
Cycling Enthusiast
Overall Rating
Great bib shorts

I don't buy anything else but castelli bibs they are comfortable and fit great

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