SKU: 73226742720

Specialized Propero 4 Helmet

Sale price$103.50 Regular price$115.00
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Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

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Description

Specialized Propero 4 HelmetMeet the all new Propero 4 helmetit brings the aero advantages of the S Works Evade 3 together with the ventilation of S Works Prevail 3, all with the comfort and confidence Specialized helmets are famous for, earning the highest 5 Star Virginia Tech helmet rating. Every detail of the Propero 4 was created with our equation for speed in mind. Aerodynamics + Ventilation + Lightweight = Fast. AERODYNAMICS: With extensive testing in CFD and in our Win

Meet the all-new Propero 4 helmet—it brings the aero advantages of the S-Works Evade 3 together with the ventilation of S-Works Prevail 3, all with the comfort and confidence Specialized helmets are famous for, earning the highest 5-Star Virginia Tech® helmet rating. Every detail of the Propero 4 was created with our equation for speed in mind. Aerodynamics + Ventilation + Lightweight = Fast.

AERODYNAMICS: With extensive testing in CFD and in our Win Tunnel, aerodynamics were at the forefront of the Propero 4 development. We took the aerodynamic leading edge from the S-Works Evade 3 and pulled it directly into the Propero 4—which helped it to be four watts, or 15 seconds over 40km, faster than our S-Works Prevail 3.

VENTILATION: Drawing inspiration from our world-renowned S-Works Prevail 3, our goal was not merely to replicate but to elevate. Ventilation became a focal point in our quest for a well-balanced, aerodynamic, and ventilated helmet. We incorporated the rear-end design language of the S-Works Prevail 3 and introduced small 2mm offset micro-channels that create turbulence in the airflow throughout the helmet to help create a continuous, refreshing flow of air.

ATTENTION TO DETAIL: Beyond just aerodynamics and ventilation, the Propero 4 represents meticulous attention to detail. We went the extra mile by incorporating cutting-edge technologies from our S-Works level helmets, like MIPS technology for confidence, and a fit system designed to deliver all-day comfort. The Propero 4 doesn't just meet expectations

  • Mips Evolve Solution is a low-friction layer that allows a sliding motion of 10 to 15mm in all directions. Studies indicate that this reduces some of the rotational forces transmitted to the brain during angled impacts.

  • Propero 4 earned the highest 5-Star Virginia Tech® Helmet Rating from internationally renowned Virginia Polytechnic Institute and State University.

  • FS3 Fit System & Occipital Base Adjustment optimizes comfort by personalizing fit to individual head shape, and helmet angle can be adjusted for compatibility with glasses.

  • Adjustable Tri-Fix web splitter combined with thin 10mm webbing for increased comfort.

  • Dedicated sunglass storage maintains a secure fit and keeps eyewear out of the way when needed.

  • Micro Channeling & large rear-end vents for increased ventilation.

  • S-Works Evade 3 front-end design language for enhanced Aerodynamics.

  • Precision, full-wrap polycarbonate shell for increased durability and premium finish.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 73226742720

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4.6 ★★★★★
Based on 10 reviews
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Verified Purchase
PS
Birmingham, US
★★★★★ 3
Not a happy customer
My Aussie ate the chew stick within 5min. Disappointed it didn't last longer. Won't buy again :(
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
Y
yetanothereviewer
Waukegan, US
★★★★★ 4
Massive treats, no tummy rumbles, but a little pricey
I'm always a little tentative when ordering dog treats online, because you don't always know in advance where they're sourced from, or what weird processing might be done to them, or what weird additives might be thrown in. These are sourced in Mexico, and they seem to be straightforward in terms of ingredients. Phew! The smell of these is not the best, but if you've fed your dog collagen treats before, I'm sure you know what you're getting into with that. The dogs loved them, for sure. These treats are MASSIVE, so if you have a small or medium sized dog, you might want to cut them into two or more pieces. For my 60ish pound dogs, they were very large but manageable, and the way their eyes lit up when I presented it to them, it was like Christmas. LOL The only reason I'm docking a star is because these are not long-term chews, at least for my dogs. Yak chews will generally last for a couple of hours for them, which I break up over several days by taking the treat away after a while and giving it back to them the next day. These chews were gone within about 5-10 minutes. (Five minutes for my spazzy dog who acts like treats will disappear if they're not hoovered it into her gullet at breakneck speed, and ten minutes for the other who likes to taste his food on the way down.) At almost $6 a pop, these are pretty expensive for 5-10 minutes of enjoyment, so this isn't going to be a treat I buy for them on the regular. There were no issues with tummy rumbles or nausea or diarrhea afterward, so that's good. And I like getting a little more collagen in these kids because they're both getting up there in age, so their hips and joints can use a little extra love. If you've got the extra money to spring for these, or if your dog paces him- or herself reasonably with dog treats, this could be a good choice for you.
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Reviewed in the United States on September 8, 2025
W
Verified Purchase
Willow
Houston, US
★★★★★ 5
My non-chewer loves these
He is not into chewing, tried many different ones. But he’ll chomp down on theses, and they seem to be all good stuff
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Reviewed in the United States on December 17, 2025
M
M.S.
Carnegie, US
★★★★★ 5
Dog loves them, no rawhide!
My dog is obsessed with these! We have a 70 pound pit mix who is a power chewer and these rolls last forever. He goes crazy for the peanut butter taste and it takes him a couple of days to really destroy one entirely. They are very effective for keeping him busy as the size is massive. I like giving him something so large because he then sets his mind to it for a long time. I like that they have a lot of collagen in them, I can't say I've noticed that his coat is a great deal shinier but it can't hurt! I also like that these are rawhide free. I would say these are a good value as they keep him busy for a good amount of time.
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Reviewed in the United States on January 29, 2026
H
Heart0277
Houston, US
★★★★★ 5
These are great my dog loved it
Well, I can say one thing I have shepherd. Wolf hybrids, and they are very particular about the stuff they eat. I can give them raw meat, and if it's old, they don't want it, so they're pretty finicky, I hooked them up with these. And they didn't hesitate to go at them. So I wait, I fed half, and then waited a couple of days, they had no negative response to it. That I'm aware of and so I gave him the other one and split it between them, and they don't stop until they're gone. So they pretty much sold themselves for me. If mine My dogs will eat em.They must be okay worth the money in my book.Made my babies happy should get some for yours my dogs are like super chooers.Okay, they have jaws that break bone.So to try to say that these are not good for heavy chewers, I i can't agree with that.Although they won't last very long with heavy chewers, they do great.The dogs love them we only smell was the smell of the product.Kind of a food smell to it.And as soon as I opened the package, the dogs had me surrounded like the sue did old custard, and they weren't letting me go until I shared straight up the male's a hundred plus pounds.And he's eyeballing me like, i'm gonna be lunch.If I don't give him a share, it was funny as hell a great product i think one of the things is the peanut butter.That's in them.My dogs love their peanut butter now.These are almost a foot long each stick, and they're about an inch and a half in diameter.Now they would last for a pretty good time for a normal chew type.DogRottweiler's pit bull saint bernard's high bread.Shepherds, et cetera, anything with a two thousand pound byte is going to tear these things up and have a great time.Doing itThey won't last as long as the dainty chewers and the the comfort chewers, but they'll do the job
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Reviewed in the United States on September 13, 2025

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