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Castelli Mens Free Aero Race 4 Bibshort Limited Edition
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Men's Free Aero Race 4 Bibshort Limited Edition

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Tired Of Boring Black Bibs?

Castelli recently dropped a limited-edition Free Aero Race 4 Bibshort that shakes up the normal bib color schemes. It has the same wonderful qualities as the regular Free Aero Race 4, but shakes it up in the design department.

The fourth iteration of the Castelli Free Aero Race bibs receive major upgrades for increased comfort, fit, and durability.

Castelli Men's Free Aero Race 4 Bibshort Limited Edition features a new leg gripper design with vertical silicone stripes to keep it in place without restricting stretch.

The seams have been updated to improve the fit and make this bibshort look even better on you, the rider. The bib straps have been re-engineered with new fabrics and construction to enhance airflow, durability, and smoothness against the body.

Impressively Soft and Seamless.

The revised Free 4 Aero Race Bibshort also receives the updated Progetto X2 Air seamless seat pad featuring the softest surface fabric you've ever felt in a seat pad.

You'll be glad Castelli ignored the old saying, If it ain't broke, don't fix it, because the Free Aero Race 4 offers pro status upgrades.

Limited Edition Flair

This limited edition color scheme blends different shades of gray through striped patterns on the legs and fabric straps. For those looking to break away from the boring black bibs they wear day-in and day-out, these Free Aeros add much-needed flair.


  • Vortex dimpled fabric on legs
  • Forza fabric on inner legs with 38% Lycra® content
  • Cooling stripe mesh engineered minimalist bib.
  • Giro4 leg gripper elastic for better grip distributed over larger area
  • Supportive Doppio V construction in front
  • Flat-lock stitching
  • Progetto X2 Air Seamless seat pad
  • Limited edition gray color scheme

Performance fit: 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 typically wear a Medium, select a Large in Castelli.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

The product weight specified is an approximate weight based on the manufacturer's specifications (if available) or our measurement of one or two examples. For most products, the weight will typically vary by 5% to 10%.

Discount Codes are not applicable to Closeouts.

This product is NOT Eligible for VIP Points.


Fit: Race Fit 


Weight: 172 g 


Straps: Breathable mesh 


Chamois: Progetto X2 Air Seamless seat pad 


Style Type: Bibs 

LTD Grey - Small

Mfg PartNum: LO512-S 

LTD Grey - Medium

Mfg PartNum: LO512-M 

LTD Grey - Large

Mfg PartNum: LO512-L 

LTD Grey - X-Large

Mfg PartNum: LO512-XL 

LTD Grey - 2X-Large

Mfg PartNum: LO512-2XL 

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Cycling Enthusiast
Lebanon PA

Great products

Reviewed 12/31/2021
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Castelli Bib Shorts are the best!
by Jim
Competitive Racer

I have around 15-20 pairs of bib shorts and the Castelli's are my go to choice for riding. They fit great, breath, and are good for a 15 mile or a 125 mile ride.

Reviewed 11/26/2021
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