Castelli Free Aero Race 4 Cycling Bib Shorts - 2019
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Castelli Free Aero Race 4 Cycling Bib Shorts - 2019Castelli Free Aero Race 4 Cycling Bib Shorts - 2019Castelli Free Aero Race 4 Cycling Bib Shorts - 2019Castelli Free Aero Race 4 Cycling Bib Shorts - 2019Castelli Free Aero Race 4 Cycling Bib Shorts - SS19Castelli Free Aero Race 4 Cycling Bib Shorts - SS19
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Code: CS19003010
Castelli Free Aero Race 4 Bib Shorts - SS20
The Free Aero Race 4 Bibshort is Castelli's top race short, which also means that it’s insanely comfortable. The original Free Aero Race Bibshort was first introduced over a decade ago and has logged literally millions of kilometers under the backsides of Castelli's pro riders and has been the best-selling short in the Castelli retail collection.
Over this time the short has undergone numerous updates and improvements in the never-ending quest to create the best short possible. While the basic concept of a minimalist workhorse pro-level comfortable race short remains, every single fabric, component, stitch and construction method has been updated and improved over time.
This fourth generation of the short features the updated Progetto X² Air Seamless seat pad. This pad separates a soft, stretchy skin care layer that moves with your body from a generously padded cushioning layer that replicates the form of your saddle. Eight-hour rides are no problem. Of course the fabrics are premium, made to our specifications by Italy’s best fabric suppliers. The Forza fabric on the inner leg features 38% Lycra® content for perfect fit, while the Vortex fabric on the side panels is dimpled for aerodynamics. And it’s held in place by the latest iteration of our seamless flat Giro leg gripper.
  • Vortex dimpled fabric on legs for aero performance
  • Forza fabric on inner legs with 38% Lycra® content for perfect fit
  • Stripe mesh engineered minimalist bib construction keeps you cool
  • Giro4 leg gripper elastic for better grip distributed over larger area
  • Doppio V construction in front for increased support and comfort
  • Flat-lock stitchingProgetto X² Air Seamless seat pad
  • Weight: 172g


Sizing Information for Castelli Clothing:

Castelli Size Charts

Ands Excellent fit and quality as you would expect from Castelli. The pad is exceptional and good for very long and tough days on the bike. Highly recommended, particularly for lean guys who struggle finding a good leg fit in other brands.
John My second pair of these shorts. They are so comfortable. First time with these on did a an hour Cat 1 climb in Alps. Still feel great after a long day on the bike.
MZ I usually wear a large or XL, glad I got the XXL as they fit perfectly.
Mr smith Superb fit, excellent pad as well. Some might find the fit a bit tight but it is suppose to be that way - compression fit - very supportive on long rides.
Mr smith Superb performance bibshorts. Very supportive material and excellent pad. Used over 4 hours and no issues.
Mr Armstrong The combined dividend of retirement and lockdown has allowed me to get out on the bike everyday with the added bonus of the loss of many kilogrammes. Always been a big fan of Castelli clothing. Previously a XL now a L. Really comfortable shorts for the turbo and out on the road. A nice snug fit. Just what I expected.
Mr Towers Larger size than usual , now a perfect fit and amazingly comfortable
Simon Really love these shorts. The pad is the best I’ve had (& I’ve tried several top end brands). Fit really well on the bike (& little snug off it, but that’s not what they’re for right!) I’m 6’1 with 31” waist and large fit nice and snug. Decent leg length as well (I prefer my bibs a bit longer and these are spot on).
Mr Smart Very happy with these . High quality short for the price. Merlin competitive as always and fast delivery.
Ian Muir Amazing, fit great and feel good on the bike
Mr Mortimer Very comfortable and close fitting once on. Thin and narrow shoulder straps could be wider. Enjoy the pad very much. Protects the sensitive area very well.
Moumtzis Perfect fit and quality. Very light and breathable.
Mr Fletcher Very comfortable pad - best I’ve used. I’m 170cm and 70kg and am between a large and medium. Legs are very long which is great if you like that, but I’d prefer an option for a 10-15 shorter leg. Only 4 stars as the straps aren’t the best - very thin material between two thicker bands so you can feel it when riding. No big issue and doesn’t rub but my BTwins are better and less than half the price! Worth every penny for the pad though!
Michael Nice & comfy, quality item, I fully recommend