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2018 S-Works Prevail II

When we set out to improve the original S-Works Prevail, we knew that we had our work cut out for us. How could we improve on the industry benchmark for fit, ventilation, and comfort? By listening to our riders—that’s how. Through this, we realized that there were a few aspects of the original Prevail that needed to be changed, with the biggest request being for a lower-sitting design.

We thought to ourselves, "thinking big shouldn't result in bigger helmets," so with the Prevail II, we set out to prove that big ideas can come in smaller packages. It all starts with our patented EPS construction that relies on multi-density foam that's paired with a robotically woven, Aramid-reinforced skeleton. This comes with a reduction in the overall size, creating a smaller profile that fits lower down on the head for a better fit and safety.

It also has deep internal channels that are aligned from front-to-rear, so the air intake and exhaust are optimized for unparalleled cooling over the entire head. And in the Win Tunnel, we found these new designs amounted to six seconds saved over 40km when compared to a "standard" road helmet. Another standout feature of the S-Works Prevail II is the Gutter Action System that manages the flow of sweat, keeping it away from your eyes and dripping it off of the pads over your temple.

In the end, the S-Works Prevail II is the most complete lightweight race helmet we've ever made—perfect for hot, mountainous rides and flat, windy sections alike.

Rider Reviews

  • 4.2
  • 21 Reviews

I would buy again

Light, good construction and I looks great.


Name:
Old C.

Helpful?

""Gutter Action"" feature is worthless

You would be better off spending $100 on another helmet and $5 on a sweatband. I seriously wanted the ""Gutter Action"" feature to work but it doesn't. Stinging sweat pours into my eyes after about 20 minutes of riding. I tried snug fit, tight fit and light fit; none worked. Good looking product, but so are $100 helmets.


Name:
Fl R.

Helpful?

The Best Helmet I've Ever Crashed

I'm now on my third Prevail helmet. (The first two were destroyed in, what could have been tragic, collisions with distracted drivers.) I trust my noggin to this feather light marvel. The fit and ventilation are exceptional. I wear regular, full-time glasses so the small gap between the strap and my head accommodates the temples without having to remove them whenever I take the helmet off/on. It would be hard to find another helmet, at any price, that checks all the boxes like the PREVAIL.


Name:
Bub O.

Helpful?

Could be better

Assuming this helmet was provided rider first engineering, take my review with a grain of salt. I purchased this helmet, tried it on with my Jawbreakers and immediately put it back in the box for return. Not entirely sure why SL decided to build the straps so far away from the skin, but the 1/2"" gap was not only annoying, but looks weird, and functions poorly (for me). Doesn't make sense to me, having to leave your chin strap more loose than usual, to accommodate cycling glasses, which are pretty much all designed to fit over straps. Disappointed because everything else about the helmet seems flawless... well I could talk about the price. -2 stars.


Name:
Paul H.

Helpful?

Perfect fit and lightweight!

I've tried many helmets and I always reach for this one. The fit system is secure and extremely comfortable. It's lightweight and nicely ventilated.


Name:
Ec R.

Helpful?

Lightweight & great ventilation!

This has been my go to helmet for quite some time! It really has a perfect snug fit, while still remaining comfortable and lightweight for long rides. I never really notice it's on and the ventilation is great for hot summer rides.


Name:
T M.

Helpful?

Don't be a no brainer and purchase this no brainer!

Simply the most comfortable helmet I've worn to date! Mountain rides, gravel rides, road rides, cruises to the coffee shop, it does it all. I often forget I have it on my head when pulling up to the coffee shop mid ride and get no hot spots on those long days in the saddle! Protect your brain with this no brainer of a purchase!


Name:
Nick H.

Helpful?

1 year / 800 hours in this helmet so far...

I use this helmet strictly for Mountain Biking (I don't own a road bike). 1 Million Feet of Climbing and Descending with it o far. It's super comfortable and easy to snug the fit just right with the adjustment dial in the back. It is so light and comfortable I've had to reach up when starting on several rides over the year to feel if it was actually on (after one time riding off thinking it was already on, no kidding, true story, it's that light and comfortable). Very well ventilated, I've never felt any heat build up even on the hottest days and hottest climbs.


Name:
Rich K.

Helpful?

Stylish and Protection

Living in Florida I always worry about overheating with helmets. This helmet does not even feel like its on (no neck stiffness after ride) and is cool (can actually feel air flow) and it looks pretty freaking awesome as well. My glasses (Oakley and 100%) fit easily in the holes to make it a total package for riding.


Name:
Run T.

Helpful?

Most ventilated helmet I've ever had.

I bought this helmet based on looks- so glad I did. This helmet feels much lighter on your head than it does in your hands, and it's ridiculously light in your hands. The straps are easy to adjust and comfortable. But the best part of this helmet- the ventilation. When comparing this helmet to others, it doesn't have the largest vents, but they are the most effective vents I've experienced. And in the Florida heat and humidity- it can make a huge difference in ride comfort


Name:
Trixiegoat

Helpful?