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Castelli Men's Free Aero Race 4 Bibshort

Mfg PartNum:
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Pro Rider Approved — Castelli Free Aero Race 4 Bibs

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

The Castelli 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.

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.

Features:

  • 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.

  • 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.

    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%.

SMLXL2XL3XL
Chest36¼"37¾"39½"41¼"43¼"45¼"
Waist31½"33"34½"36½"38½"40½"
Hips37"38½"40"42"44"46"
Inseam32¼"32.67"33"33½"33.85"34¼"
 

Style Type: Bibs 

Weight: 172 g

Fit: Race Fit 

Chamois: Progetto X2 Air Seamless 

Straps: Breathable mesh 

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 

Ordered by Most Relevant First
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Reviewed 11/23/2020
by BCarma
Cycling Enthusiast
California
Value Rating
Overall Rating
Best Bibshorts ever

Super comfortable. Yes, they are expensive but they are durable. Have been riding for over 20 years, definitely the best bibshorts I've ever had. Euro sizing, I had to get one size up from most brands,

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Reviewed 6/27/2020
by John Twist
Cycling Enthusiast
Morgantown, WV
Value Rating
Overall Rating
2 of 2 customers found this review helpful.
Improved Pad and More Breathable

I have been using Castelli bibs (Body Paint 12 and Free Aero) for 10 years. I wear the large size (5'8, 150 lbs, 32 waist). The new Aero Race 4 bib-short shows Castelli's dedication to continually improve their shorts. The pad feels more substantial and comfortable when on the bike. The shell materials just fit great and feel more breathable. The grippers are vastly improved with excellent hold (vertical series of tacky stripes). The stitching on the seams and attachment point on the shoulder straps are improved- no frayed threads. I wash them in a mesh bag using detergent with no fabric softeners and dry on a towel warmer. After 20 rides all good- even the Castelli logo shows no flaking. The blue and the grey colors are subtly different than the standard black and compliment many of my team jerseys. I prefer these colors over the black. Highly recommend. JT

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Reviewed 10/29/2020
by Anonymous
Las Cruces NM
Overall Rating
The best!

I was so impressed with my first pair.. I ordered a second. All day comfort, big climbing days.. No problem.. Just order 1 to 2 sizes if you are tall (I'm 6ft 2 inches). The suspenders are tight..

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Reviewed 8/26/2019
by Mike Hutcheson
Chicagoland
Overall Rating
1 of 1 customers found this review helpful.
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 10/19/2020
by Redshorts
Cycling Enthusiast
Boise, ID
Value Rating
Overall Rating
Great bibs, very comfortable for long rides.

Great compression helps me stay in the saddle longer, riding harder. Castelli bibs have been my favorite for years, and these are the best so far!

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Reviewed 5/21/2020
by KC
Seattle area
Overall Rating
1 of 1 customers found this review helpful.
Amazing

These shorts are very well made as well as extremely comfortable even for women.

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Reviewed 6/23/2020
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Great fit and performance but poor stitching

I am a fan of Castelli bibs. The fit and compression on these bibs are perfect. I am 5'9' 160lbs and ordered a medium. The reason for not giving the bibs five stars is due to the fact that the stitching was coming out before I wore them. I only realized it about two months after buying them because I ordered in the winter when they were on sale and did not get them out to wear until the spring. Thankfully they are double stitched so they are no serious issues.

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Reviewed 9/10/2019
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
2 of 2 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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Reviewed 9/5/2019
by Lamar
Bothell
Overall Rating
1 of 2 customers found this review helpful.
Best bib shorts

Castelli continues to improve on the bib shorts. Cant go wrong with these. Great for century rides.

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Reviewed 8/6/2020
by Hebrew Hammer
New York
Overall Rating
1 of 1 customers found this review helpful.
Super comfortable

Excellent product. As with all casteli Gear order one size up as they run small. Good shammy.

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Reviewed 3/14/2020
by Anonymous
Cycling Enthusiast
San Diego, CA
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Love 'em

Very comfortable and provide good cushion-light weight.

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Reviewed 7/26/2019
by Anonymous
Overall Rating
1 of 1 customers found this review helpful.
Comfortable and light

Can barely feel this chamois on my skin, and the chamois insert is comfortable. No numbness on long rides.

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Reviewed 5/20/2019
by Anonymous
Cycling Enthusiast
Anaheim Hills, CA
Value Rating
Overall Rating
1 of 6 customers found this review helpful.
A hole in the bib

I ordered 4 of these bibshorts but 1 of them had a little hole near the stitching on the front right leg.

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Reviewed 10/30/2020
by David R
Cycling Enthusiast
Missouri
Overall Rating
Favorite Short, in my opinion best shorts you can get for the price.

I use the shorts for my longest rides. Very comfortable 4+ hour rides. Only negative recently is that

Castelli is making their straps a little short. I have several versions of these shorts and it seems the straps

are getting shorter with each pair. I'm a tall rider so not a problem if you are average sized.

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Reviewed 6/16/2020
by SaaSy Cyclist
Cycling Enthusiast
Portland, OR
Overall Rating
My new favorite bibs

These bibs are fantastic! Comfortable and supportive for training or racing

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Reviewed 8/31/2020
by Herc
Competitive Racer
D.C.
Overall Rating
1 of 1 customers found this review helpful.
Good shorts

Dependable shorts, and great for long ride. 225lb size xl.

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Reviewed 9/4/2020
by Kory
Hillsboro, OR
Overall Rating
1 of 1 customers found this review helpful.
My favorite bibs ever

Most comfortable bibs I have ever worn. Great cushion, but it doesn't feel like a diaper. Tight fit, so it doesn't move while riding. I got a size medium and have a 32" waist.

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Reviewed 7/19/2019
by Anonymous
Cycling Enthusiast
Overall Rating
better leg gripper, better seat pad

It's an improvement on the old Free Race bib. I like the new seat pad. Still fits the same way.

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Reviewed 7/10/2019
by Anonymous
Overall Rating
1 of 1 customers found this review helpful.
Good idea, poor execution

New bib strap fabric is very uncomfortable especially at the waist. Doesnt stretch and cuts into your sides when in an aero position. The seamless chamois moves around and ends up in the wrong place.

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Reviewed 6/8/2019
by MeesterE
Casual Cyclist
Portland, OR
Overall Rating
2 of 2 customers found this review helpful.
Leaves a bit to be desired

I own a couple of Castelli pro bibs and shorts (Nano flex pro, the free aero race shorts and bibs) and would classify myself as more of a casual rider and in my experience using Castelli products, I have been nothing but impressed - not so much with these bib shorts. The fit is typical of Castelli, tight with good compression where it is needed - it's a comfortable fit with seams properly concealed or thoughtfully placed to reduce chafing. The straps, which are touted to enhance airflow, durability, and smoothness against the body are too narrow and end up twisting. The material is too thin and no matter how much I tried to keep them flat, they would bunch up and become uncomfortable on the shoulders - so much so that I mostly ride with the straps down. After my first ride - about 40 miles - I also noted there was pilling in the seat area from rubbing against my saddle - no holes, but still a bit disconcerting given the price I paid for the product. The chamois material and pad is comfortable but interestingly, the material doesn't completely cover pad - there is an area toward the back of the chamois, where you can see the pad and actually move it around. I initially thought the opening was there so you could take the pad out and case you wanted to wash or replace it, but it's sewn into the lycra. The pad still does what it's meant to do, but aesthetically, it's not nice to look at. With all that said, I still wear these mostly for my trainer sessions at home. They're comfortable and the dark steel blue color is a nice change from all the black shorts I have. Still a fan of Castelli, just not of this short.

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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. 49