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Castelli Mens Free Aero Race 4 Short Black / Black Stitching
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Castelli
Men's Free Aero Race 4 Short

Mfg PartNum:
  (22 customer reviews)
1799
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Masterful.

Castelli's Men's Free Aero Race 4 Short 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. This 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.

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.

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: Shorts 

Black / Black Stitching - Small

Mfg PartNum: L19006010-2 

Black / Black Stitching - Medium

Mfg PartNum: L19006010-3 

Black / Black Stitching - Large

Mfg PartNum: L19006010-4 

Black / Black Stitching - X-Large

Mfg PartNum: L19006010-5 

Black / Black Stitching - 2X-Large

Mfg PartNum: L19006010-6 

Ordered by Most Relevant First
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(18)
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Excellent shorts. Comfortable for long rides.
rating
by Anonymous
0 of 1 customers found this review helpful.

This short is my go to for many years.

Reviewed 7/26/2021
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Quality shorts that are comfortable.
rating
by Pdneuron
Palo Alto, California

I usually buy Castelli shorts because I find their padding to be most comfortable. These are no exception. The fabric also has a nice dimpled texture in the sides. I have used other large Castelli in past (e.g., Vellesissimo) and fit well in that size. I got a large and the thighs are bit tight, but that may be the design. As other reviewers have suggested you should try one size higher than other brands.

Reviewed 1/24/2021
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Quality shorts that are comfortable.
rating
by Pdneuron
Palo Alto, California

I usually buy Castelli shorts because I find their padding to be most comfortable. These are no exception. The fabric also has a nice dimpled texture in the sides. I have used other large Castelli in past (e.g., Vellesissimo) and fit well in that size. I got a large and the thighs are bit tight, but that may be the design. As other reviewers have suggested you should try one size higher than other brands.

Reviewed 1/20/2021
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Quality shorts that are comfortable.
rating
by Pdneuron
Palo Alto, California

I usually buy Castelli shorts because I find their padding to be most comfortable. These are no exception. The fabric also has a nice dimpled texture in the sides. I have used other large Castelli in past (e.g., Vellesissimo) and fit well in that size. I got a large and the thighs are bit tight, but that may be the design. As other reviewers have suggested you should try one size higher than other brands.

Reviewed 1/18/2021
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First ride in these 103 miles
rating
by David Z
Sacramento, CA
2 of 2 customers found this review helpful.

Purchased these based on reviews and they lived up to the challenge. Ordered one size up large From normally my size(my waist 32-33). Finding shorts that hold up over 6 to 9 hours in the saddle definitely worth the money

Reviewed 10/29/2020
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Castelli bike shorts
rating
by Pat
Cycling Enthusiast
Summit, NJ
1 of 1 customers found this review helpful.

I think Castelli has about the finest bike clothing on the market. These bike shorts are no exception.

Always purchase a size larger however with the Castelli brand.

Reviewed 9/14/2020
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i like to ride train
rating
by George
Cycling Enthusiast
Salt Lake, Utah
0 of 1 customers found this review helpful.

second purchase two pair per purchase

Reviewed 3/8/2021
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Great shorts, excellent chamois!
rating
by TallboyRoubaix
Cycling Enthusiast
Santa Cruz, CA

Great shorts, very comfortable and appear to be very well made. Ordered one size larger since they run small. Use them for road, gravel and mountain biking.

Reviewed 11/21/2020
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Great shorts, excellent chamois!
rating
by TallboyRoubaix
Cycling Enthusiast
Santa Cruz, CA

Great shorts, very comfortable and appear to be very well made. Ordered one size larger since they run small. Use them for road, gravel and mountain biking.

Reviewed 11/21/2020
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The most comfortable shorts I have ridden
rating
by horsefeathers25
Cycling Enthusiast
Albuquerque, NM

I have normally ridden Specialized, Garneau or way back when Performance shorts. Not necessarily cheap shorts but not the most expensive either. But in search for a really comfortable short I bought a pair of the Casteiili Free Aero Race 4 shorts and they have proved to be the most comfortable shorts I have ever ridden with. I like the way they hug your thigh and the padding is fantastic. Comfortable, comfortable, comfortable.

But as other people have advised they run small. I am 6'1", 190 pounds, a 34/35 waist and 34 inch inseam and normally ride a large short, but ordered an extra large in these and they fit well but a large would have been impossible to get on. Again the most comfortable shorts i have every worn.

Reviewed 7/20/2021
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Great shorts!
rating
by Anonymous
Iowa
1 of 1 customers found this review helpful.

These are very good shorts! They do run extremely small. Definitely need to size up regardless of what the sizing chart says.

Reviewed 7/8/2021
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New leg gripper design is the best.
rating
by Anonymous
Cycling Enthusiast
0 of 1 customers found this review helpful.

Mountain, gravel and road biking.

Reviewed 8/10/2021
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Very Nice shorts
rating
by Keith
Buckley, Wa

These are becoming my go to shorts for long rides. Very comfortable. I have been wearing them for a couple of months and the seem to hold up very well. Probably going to order another pair.

Reviewed 8/21/2021
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Excellent product, quality construction, great chamois and spendy $$
rating
by Mike
Cycling Enthusiast
Tucson, AZ
3 of 4 customers found this review helpful.

Tucson Mike here....

I get the pleasure of riding one of Americas finest mountains for cycling (Mt. Lemmon)

Imagine climbing 6,000+' in 26 miles and then bombing back down from which where you came?

That said, I like to use the finest equipment for my exploits and these Castelli Aero Race Shorts seem to fit the bill. The materials, construction and chamois are top-rate. These are aero shorts and fit like a 2nd skin. Unless you want to visit a urologist, I'd suggest going one size up. I have a 30" waist, weigh 155 and wear a large, (vs. a medium with Pearl Izumi and Garneau). The large is "comfortable" for all-day rides; the medium made me feel uncomfortable after a very short time. The value is "meh"; these babies don't run cheap but "compliment" the array of $13k production/dentist bicycles hitting the market!

Reviewed 2/26/2021
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Best Shorts Ever
rating
by Anonymous
Competitive Racer
Eagle, ID
3 of 3 customers found this review helpful.

Like all Castelli, order one size up. 5'11" 155 lbs I order large.

Can't even believe how much better these shorts are than anything else I've ever worn. Great pad that is not spongy and annoyingly thick. Great fit around legs. No bunching or climbing up your thigh or anything weird. Look great, feel great, durable. I'm sponsored by another brand that I have to wear when racing. I wear these when I'm out on my longest rides. Worth every penny.

I am a huge fan of shorts, on hot days especially. These are so much more comfortable than any bibs I've ever had. On winter rides, these will be under my tights.

Reviewed 8/7/2020
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Great short, just without the bib straps
rating
by PDXrider
Competitive Racer
Bend, Or
8 of 8 customers found this review helpful.

If you prefer a regular short over the bib version, this is the most comfortable. Great Chamois, Compressive fit without being too tight. Make sure to order up one size compared to other brands like Pearl Izumi.

Reviewed 3/26/2020
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Best shorts ever
rating
by Anonymous
Nor Cal
4 of 5 customers found this review helpful.

As usual, best fit and durability. Order one size up though.

Im one of the 1% that greatly prefers shorts to bibs. These are my favorite of 5 different brands I currently use.

Reviewed 3/15/2020
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Meets the endurance challenge
rating
by rac47
Western States
3 of 3 customers found this review helpful.

My favorite venue has been endurance rides and double centuries.

The convenience of shorts over bibs becomes apparent.

The Costello Aero stay supportive throughout even the longest rides

Reviewed 12/13/2019
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Comfort for the long haul
rating
by RAC47
NV
1 of 1 customers found this review helpful.

Most of what I do is endurance riding, centuries and doubles. I like the convenience of shorts as opposed to bibs and these Castillis provide long ride comfort.

Reviewed 11/21/2019
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Well designed and high quality manufacture and materials.
rating
by Anonymous
Cycling Enthusiast
Seattle
5 of 5 customers found this review helpful.

Very form fitting and runs small - order one size up.

Reviewed 8/26/2019
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