Our no-compromise approach to creating the best cycling clothing in the world is nowhere more evident than in the 2019 Free Aero Race 4 Bibshort. This is a product that’s undergone 12 years of development and refinement, with literally millions of kilometers on the road.
The Free Aero Race Short is the all-around race short we supply to Team Sky, as well as all race teams we’ve sponsored since 2007. but that’s not enough of a reason for you to just go out and buy a pair. since these guys ride over 30,000 kilometers per year, we consider them ideal testers and continuously solicit their feedback. the difference is that we actually listen to them. and the good thing for you is that the pros are looking for comfortable shorts too, so this short is made to be minimalist and fast, but without sacrificing all-day comfort.
For this year we’ve made subtle but important refinements. The seat pad has been updated with a softer, stretchier and totally seamless top layer. The leg gripper is also stretchier and grips better yet allows for a better-quality sublimation print. The bib straps are both lighter and more comfortable while giving better support.
- 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 Stitching
- Progetto X² Air Seamless Seat Pad
How long will it take to arrive?
Please check the stock availability notice on your item when placing your order. This item is: In stock
Express Delivery Available If ordered before 8pm, delivered by courier next working day. Available on orders placed before 8pm (2pm weekends and Bank Holidays) for delivery next business day. Applies to most delivery addresses within mainland UK.
How will I know it has been sent?
You will receive an email to confirm when your item has been sent.
You can also check the status of your order and individual items by accessing My Account details and following the prompts.
Please allow 10 working days from dispatch of your order before notifying us of any late deliveries.
It may be advisable to check with your neighbours to see if a parcel has been left with them, check any outhouses you might have where it may be left if it cannot fit through your letterbox and contact your local sorting office to see if the item has been returned to the depot as undelivered and awaiting collection.
If I'm not completely happy with my item?
Please see our returns policy.
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Top Customer Reviews
Where reviews refer to foods or cosmetic products, results may vary from person to person. Customer reviews are independent and do not represent the views of The Hut Group.
Great fit and super lightweight ! Quality is really good!! Very impressed with the confort in the saddle for long rides!!
Very comfy knicks
This is my 7th pair of Castelli knicks and the 6th with the Progetto X2 seat pad. They are the most comfortable pair of bib knicks I've owned and will continue to purchase in the future. Oldest pair is around 5 years old and the elastic has worn out, but still comfortable. Great deals on these knicks at the moment...
So far so good
Have done a couple of moderate rides in these so far, only about 2.5 hours max though, so nothing that really puts them to the test. So far, I rate them pretty highly. The chamois is comfortable, and doesn't chafe. Leg length is good, and I like the grippiness at the bottom of the legs too so they don't ride up. Downside is the straps are too thin, and as usual Castelli's sizing is crazy small. I'm 6'1", around 190lbs and bought the xl, but the straps are just a tad too short.
Went for the next size up (large) which ever one advised and the shorts are prefect but the elastic over the shoulders is ridiculously and uncomfortably tight, I’m average 5’10” height. So if you have average thighs, 30” waist and 5’5” high they would be prefect !!
Castelli free aero race 4 bib shorts
This is the second pair of shorts Castelli free aero shorts I have purchased. I am 5’11”, 172lbs and the large fits me well. I find them very comfortable even on long rides.
Castelli free aero race 4 bib shorts
This is the second pair of shorts Castelli free aero shorts I have purchased. I am 5’11”, 172lbs and the medium fits me well. I find them very comfortable even on long rides.
180cm and 78 kg = XL
I am a huge fan of the top brands, but you have to be aware of their sizings. It is frustrating but its the way it is. The grear is top quality, comfortable, washes well and looks the business. You just have to know your size in their chart.
I bought these Castelli bibs this year, wore them 5x max, and there are tears in each suspenders. For the price, I'm really disappointed.
Really good quality bib shorts!
These bib shorts feel super good quality and the fit is amazing. I ordered a size L following Castelli's size guide, but I had to return them and order a size XL because they were very tight, especially the straps weren't long enough (I am 6ft). Other than that it feels perfect, the padding has been really comfortable from the first ride.
As expected - Awesome!
This is such an amazing bib! I have several Castelli bibs, and this is my favourite. The padding is the most comfortable I’ve ridden on. The fit is a ‘race and aero’ so be aware. The compression is as expected. The shoulder strap is minimalist but very comfortable. I don’t notice it in 3+ hour rides. If you like, flat wide straps then this isn’t for you. Overall, this is an amazing bib! I highly recommend it. I wish I bought another pair when ProBikeKit has that super sale. I’m 174cm and 77kg. I usually wear Large bibs but ordered XL based on my past Castelli purchases.