Tested and worn by the best riders in the world, the Specialized S-Works Prevail II Helmet 2017 is one of the most aerodynamic, protective and comfortable helmets on the market. Featuring Specialized’s Patented Energy Optimised Multi-Density EPS construction that manages impact energy, this system is paired with a 4th Dimension Cooling System to enhance breathability and all-day comfort.
Specialized S-Works Prevail II Helmet
Specialized S-Works Prevail II Helmet 2017
Researched, tested and developed in the pro-peloton by the likes of Fabio Aru, Alberto Contador and Peter Sagan, the Specialized S-Works Prevail II Helmet 2017 is the most complete, lightweight race helmet Specialized have ever made. It’s more aerodynamic, even lighter in weight and provides the all-around best performance available on the market today.
It’s constructed with Specialized’s Patented Energy-Optimised Multi-Density EPS construction, and the Patented Aramid-Reinforced Skeleton provides internal EPS support. These features make the Prevail II Helmet 2017 one of the safest, yet highly functional helmets on the market.
Specialized have increased the Prevail II’s aerodynamics, boasting a saving of 6 seconds over 40km due to its more streamlined, tighter fit on the head. The 4th Dimension Cooling System with deep internal channels, large vents and aligned exhaust ports have become renowned in the cycling world for providing unparalleled levels of breathability when on the bike, and the Prevail II doesn’t deviate from this.
The Gutter Action brow pad design enhances this breathability and comfort, forcing sweat away from the brow and down the sides of the temples. This keeps your vision clear and allows you to focus on the task ahead of you.
A Tri-Fix web splitter, alongside instrap webbing and 4X DryLite webbing increases the comfort and ease of adjustments, whilst keeping the helmet tight to your head for a safer ride.
Finished with reflective decals to enhance visibility in low-light conditions, the Specialized S-Works Prevail II Helmet 2017 is the ideal choice if you’re serious about performance, cutting down aerodynamic drag and improving your safety at the same time.
Please note: Helmets that are sold on Sigmasport.co.uk are certified with a European CE EN1078 standard. Specific countries may have their own certification, which is legally required. Please check your specific country requirements and check with the manufacturer to see if the helmet has received any additional certification.
- Patented Energy Optimised Multi-Density EPS construction helps to manage impact energy
- Patented Aramid-Reinforced Skeleton provides internal EPS support
- Ultra-light Mindset II micro-dial fit system with height adjustability for the perfect fit
- Mega Mouthport optimises 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 in low-light conditions
- Patented clip-on visor included
- Weight: 185 grams (medium)
PRODUCT REF: PREVAILII
UK Delivery Options
Free Delivery on all orders over £30
Estimated delivery within 4 working days (a delivery charge of £1.99 for orders under £30.00 will apply)
CollectPlus Delivery - £1.99
Have your order delivered to your local shop for just £1.99! For Highlands and Islands, please allow up to 5 working days. Orders can be shipped to UK CollectPlus locations specified on the SigmaSport.co.uk website where they will be held awaiting collection for a period of 10 days.
Orders placed are normally dispatched within 2 working days.
Priority 1st Class Delivery - £2.99
Estimated delivery within 2 working days. For Highlands and Islands, please allow up to 5 working days.
Next Working Day Delivery* - £4.99
A guaranteed tracked courier delivery, place your order before 3pm, deliveries are made Monday to Friday.
Saturday pre 12 Delivery - £4.99
Saturday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Saturday pre 12pm by courier. Package must be signed for upon delivery.
Sunday pre 12 Delivery - £4.99
Sunday delivery orders must be placed by 1pm Friday and are only available on items in stock in our warehouse. Orders are prioritised through our warehouse and are delivered on Sunday pre 12pm by courier. Package must be signed for upon delivery.
Reserve and Collect** - FREE
Reserve & Collect is available on all items marked 'Collection'. It is a FREE delivery option that allows you to collect your order from either our Sigma Sport Store, Hampton Wick or our Reserve & Collect location in Esher. Just select the Reserve & Collect button in the basket.
* Next Working Day delivery is only available on items in stock in our warehouse and excludes pre- order items. Next Day refers to the next working day, Bank Holidays will add an extra working day to the estimated delivery lead times. UK next day excludes Saturday deliveries. This service is not available to some remote postcode areas. Please contact us for help.
** Reserve and Collect Collections - Clothing, parts and accessories: Next day. Orders placed on Friday, Saturday or Sunday will be available for collection after midday on the Monday (excluding Bank Holidays). Bikes: 4 days if in stock at the store, collect in up to 7 days (sometimes quicker) if in stock at warehouse.
London Same Day (Order Before 1pm)
We offer a Same Day delivery service into London. The cost is £25.00 under 2Kg and £35 over 2Kg. Place your order before 1pm, deliveries are made Monday to Friday. Please note this option excludes bicycles.
More information on our Same Day delivery options.
All our bikes are fully checked and tuned and tested by our Cytech qualified mechanics and then securely packaged, ready for despatch. All you have to do is add the pedals, rotate and tighten the handlebars. Typically we can deliver your bike in 7 - 10 working days.
Deliveries are made Monday to Friday on a pre-12pm delivery. One of our customer service team will be in contact to arrange a convenient day for delivery.
More information on all our UK delivery options.
International Delivery and Returns
We ship to over 100 countries using DHL for a fast and reliable delivery. To see the delivery cost, please add your items to the basket and proceed to the checkout.
International customers have 30 days from their order date to return the order. Goods must be returned in new condition with all original packaging intact and tags attached.
For full details, see this link.
Free UK Returns
We offer a free returns service for our UK customers. Sigma Sport will happily refund or exchange any item purchased at Sigma Sport, excluding Sigma Sport gift vouchers and personalised products except when faulty.
More information on the Sigma Sport returns procedure.
Please alert me via email when this product is back in stock.