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Perhaps more importantly from an everyday-use standpoint, Giro also claims that the Vanquish MIPS handily beats the Evade, Manta, Ballista, and Air Attack in terms of cooling efficiency, trailing the Synthe MIPS by just a hair in the company’s in-house testing. According to Giro, the small step that runs across the width of the helmet makes the helmet behave like a much longer helmet in the wind tunnel. The back of the Vanquish MIPS is sharply squared off.
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In terms of wind tunnel testing, Giro claims the Vanquish MIPS is not only more aerodynamically efficient than both the old Air Attack and the Synthe MIPS - to the tune of 5-10 seconds and 18-20 seconds, respectively, over a 40km-long time trial - but Specialized’s ultra-slippery S-Works Evade, the MET Manta, and the Bontrager Ballista as well. What Giro says sets the Vanquish MIPS apart, however, is its “aerodynamic cliff”: a small step that runs across the width of the helmet, and supposedly tricks flowing air into thinking the helmet is nearly as long as a full-blown time trial lid (but without the need to maintain a perfect head position to retain that aerodynamic performance). The new Vanquish MIPS shares a number of characteristics with other aero road helmets, in particular a mostly smooth exterior, a close-fitting and highly tapered profile, and a short, squared-off tail.
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The BMC Racing Team has been using the Vanquish MIPS for much of this season already, and CyclingTips US technical editor James Huang can now give his firsthand impressions of Giro’s latest creation, too. With more powerful development tools now in hand, Giro is addressing the shortcomings of the Air Attack with an even more aerodynamic - and far better ventilated - model called the Vanquish MIPS.
![giro airattack road helmet blue giro airattack road helmet blue](https://www.pmcycles.com.au/wp-content/uploads/2020/03/Giro-Synthe-MIPS-Blue-Matt.png)
The smooth exterior, close-cut tail, and nearly vent-free design was unquestionably polarizing back then, but five years later, it doesn’t look nearly as odd amidst the growing sea of similar aero-inspired lids. $275 (with shield), $230 (without), kickstarted the aero road helmet movement when it resurrected the Air Attack moniker in 2012. Size was a problem – the larger the shield the better the aero benefits, but larger shields don’t offer such nice optics, so we opted for a smaller shield.” “If you don’t ride with a shield or glasses, your drag goes up as air circulates around your nose and your eyes. The screen is attached with magnets so can quickly be switched upside down and re-attached to the helmet – avoiding the dash to stash your sunglasses. Something that really separates the Air Attack from a conventional road helmet though, is the ‘shield’ option (the removable shades at the front). In Giro’s study, its Selector shaved off a further 30 seconds.
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It’s worth remembering, though, that a full aero helmet would save more. As for the style snobs, the potential speed gains may well overturn prejudices – Giro says that over a 90km TT the helmet saves 41 seconds over the Aeon. The Air Attack’s vents may not look very effective, but thanks to Giro’s Roc-Loc system causing the helmet to sit 3mm above the head, it’s claimed to be nearly as cool as not wearing a helmet at all.
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But the performance gains are noticeable and rider perception changes when they try it.” “Aesthetically the shape challenges conventions – some riders like it, while others are more hesitant because it ‘looks hot’ or it ‘looks like a skate helmet’. While that seems like the perfect mid-ground, the appearance is likely to be polarising, according to Giro brand manager Eric Richter. We were trying to position it between our TT Selector and our Aeon road helmet.” Rob Wesson, who led the team of designers at Giro, says, “The impetus of the project was to come out with a road helmet with aerodynamic benefits that could be worn in more events than just a time-trial thanks to having the venting and styling of a traditional road helmet. Giro’s new Air Attack is just one example of how aero innovations are trickling down to mainstream consumers.
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Since pro teams turned up at major races with streamlined helmets, aerodynamics have become the hot topic in helmet design. A revelation in styling and performance for all types of riding