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Dark Steel Blue

Castelli Men's Free Aero Race 4 Bibshort

Mfg PartNum:
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Castelli's Men's Free Aero Race 4 Bibshort features a new leg gripper design with vertical silicone stripes to keep it in place without restricting stretch. New fabric allows for better print quality. The seams have been updated to improve the fit and make the short look even better on the body. The bib straps have been re-engineered with new fabrics and construction to enhance airflow, durability, and smoothness against the body. This bib short also received the updated Progetto X2 Air seamless seat pad featuring Castelli's softest surface fabric.

Features & Specs:

  • 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.
  • Weight: 172g.

Free Exchanges: This product qualifies for free exchanges within the first 60 days after order. We'll cover the shipping both ways for US customers if you need a different size and/or color of this product. Returned product must be in new condition with all labels and packaging. Free exchanges apply only for product in stock or available for backorder.


Style Type: Bibs 

Black - Small

Mfg PartNum: L19003010-2 

Black - Medium

Mfg PartNum: L19003010-3 

Black - Large

Mfg PartNum: L19003010-4 

Black - X-Large

Mfg PartNum: L19003010-5 

Black - 2X-Large

Mfg PartNum: L19003010-6 

Black - 3X-Large

Mfg PartNum: L19003010-7 

Dark Steel Blue - Small

Mfg PartNum: L19003070-2 

Dark Steel Blue - Medium

Mfg PartNum: L19003070-3 

Dark Steel Blue - Large

Mfg PartNum: L19003070-4 

Dark Steel Blue - X-Large

Mfg PartNum: L19003070-5 

Dark Steel Blue - 2X-Large

Mfg PartNum: L19003070-6 

Dark Infinity Blue - Small

Mfg PartNum: L19003041-2 

Dark Infinity Blue - Medium

Mfg PartNum: L19003041-3 

Dark Infinity Blue - Large

Mfg PartNum: L19003041-4 

Dark Infinity Blue - X-Large

Mfg PartNum: L19003041-5 

Dark Infinity Blue - 2X-Large

Mfg PartNum: L19003041-6 

Dark Grey - Small

Mfg PartNum: L19003030-2 

Dark Grey - Medium

Mfg PartNum: L19003030-3 

Dark Grey - Large

Mfg PartNum: L19003030-4 

Dark Grey - X-Large

Mfg PartNum: L19003030-5 

Dark Grey - 2X-Large

Mfg PartNum: L19003030-6 

Ordered by Most Relevant First
5 stars
4 stars
3 stars
2 stars
1 stars
Reviewed 8/26/2019
by Mike Hutcheson
Overall Rating
Comfortable to wear & comfortable on the bike!!

First time with the Progretto X2 seat pad - love it. Went with the compression version of these bibs & they are more work to get on, but after 50 miles of pedaling you can tell a difference.

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Reviewed 9/10/2019
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Nice fit, nice pad

The new pad is very nice, and I like it better than the previous Castelli pads. The fit up front is much better too. Straps are comfortable and work well. I'm 5'7 132 lb and have worn medium Castelli bibs in the past but this one is a small and fits perfectly. Snug, but that's my preference.

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*Orders received before 3:00PM Pacific time are shipped the same day (Mon-Sat). Orders over $50 are shipped free (USA only, excluding AK and HI). Some exceptions apply. See Shipping for details. 52