Specialized S-Works Prevail II (2018)


Free UK Delivery on orders over £100

The original Prevail was an extremely popular, well-performing helmet with just one frequently heard complaint - the "mushroomy" shape that fitted well but looked odd. The Prevail II addresses this, without compromising on performance, with a less bulbous design that remains lightweight, well ventilated and comfortable.

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Colour: Gloss White



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Extensively tested in Specialized's own wind tunnel, this is a true performance helmet, worthy of the S-Works name. But it's not just light weight and ventilation that matter in a helmet; comfort is also part of the consideration. This is where the Prevail II shines, everything from the revised shape to the super-soft straps ensure that it's truly "fit and forget".

Amidst all the aero-tested technology and very necessary safety features it's easy to overlook one of the less glamorous but very effective features of the Prevail: Specialized have developed a special "gutter action" brow pad design to channel sweat away from your eyes, addressing a problem that afflicts even the most well ventilated of helmets in hot weather. Just another example of the expertise from a manufacturer who've been building cycle helmets longer than just about anyone else.


  • Patented Energy Optimized Multi-Density EPS construction helps to manage impact energy.
  • Patented aramid-reinforced skeleton provides internal EPS support.
  • Ultra-light Mindset HairPort II micro-dial fit system with height adjustability for the perfect fit.
  • Mega Mouthport optimizes cooling and sweat evaporation.
  • Aerodynamic design.
  • 4th Dimension Cooling System with deep internal channels, large vents, and aligned exhaust ports.
  • Thin, soft, and lightweight 4X DryLite webbing won't stretch out with sweat or water.
  • Tri-Fix web splitter for improved comfort and ease of strap adjustments.
  • Instrap webbing system for ultra-light construction and security.
  • Gutter Action brow pad design for increased comfort and sweat management.
  • Reflective decals for increased visibility to motorists in low-light conditions.

Specialized Prevail II Sizing:

Measure the circumference of your head around the temple.

Small 51-56 20-22 6 38 - 7
Medium 55-59 21 34 - 23 14 6 78 - 7 38
Large 59-63 23 14 - 24 45 7 38 - 7 78