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Castelli Men

Men's Free Aero Race Bibshort Kit Version

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Kitted out in top-tier threads.

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. This Kit version features a design that matches their Free AR 4.1 Jersey.

It's namesake lies in the marriage between its lightweight, minimalist mesh Free 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.


  • 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.

This product is NOT Eligible for VIP Points.

Style Type: Bibs 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
comfortable & snug fitting
by Michael
Cycling Enthusiast
lower thumb area of MI

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.

Reviewed 11/23/2018
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Excellent bib short
by Anonymous

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

Reviewed 10/5/2018
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Comfortable bibs
by Anonymous
Cycling Enthusiast

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.

Reviewed 9/17/2018
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great fit, comfortable
by Anonymous
Casual Cyclist

Great fit, comfortable over long rides on the weekend.

Reviewed 8/29/2018
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Good bibs
by John smith
orlando, florida

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

Reviewed 8/10/2018
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Great bib shorts
by Joaquin
Cycling Enthusiast

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

Reviewed 6/11/2018
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