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Castelli Men's Free Aero Race 4 Short

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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 

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Reviewed 8/7/2020
by Anonymous
Competitive Racer
Eagle, ID
Value Rating
Overall Rating
1 of 1 customers found this review helpful.
Best Shorts Ever

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.

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Reviewed 3/26/2020
by PDXrider
Competitive Racer
Bend, Or
Value Rating
Overall Rating
5 of 5 customers found this review helpful.
Great short, just without the bib straps

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.

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Reviewed 3/15/2020
by Anonymous
Nor Cal
Overall Rating
3 of 4 customers found this review helpful.
Best shorts ever

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.

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Reviewed 12/13/2019
by rac47
Western States
Overall Rating
1 of 1 customers found this review helpful.
Meets the endurance challenge

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

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Reviewed 11/21/2019
by RAC47
NV
Overall Rating
Comfort for the long haul

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.

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Reviewed 8/26/2019
by Anonymous
Cycling Enthusiast
Seattle
Value Rating
Overall Rating
3 of 3 customers found this review helpful.
Well designed and high quality manufacture and materials.

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

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Reviewed 7/8/2019
by repp
Cycling Enthusiast
Central Oregon
Value Rating
Overall Rating
2 of 2 customers found this review helpful.
Nicest shorts I've ever used

I've been a Castelli fan for decades and this short is definitely the nicest so far. A tad on the spindy side but well worth it. Per usual Castelli sizing I am 5'9 175 lbs and usually take a size L in most pants but for Castelli I bought size XL and the fit is just right.

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Reviewed 5/17/2019
by Anonymous
Cycling Enthusiast
Value Rating
Overall Rating
2 of 2 customers found this review helpful.
The new progetto X2 pad is the plushest of all.

Pricey shorts, worth every penny though when riding for hours on end. The new Progetto X2 pad is the most comfortable pad of any short. It looks and feels like velvet and is of the highest quality.

I liked the older model Progetto X2 pad and the newer model is way more plush.

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

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.

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

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.

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Reviewed 10/29/2020
by David Z
Sacramento, CA
Overall Rating
First ride in these 103 miles

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

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Reviewed 9/14/2020
by Pat
Cycling Enthusiast
Summit, NJ
Overall Rating
Castelli bike shorts

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.

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