Giro Montaro Pro Helmet Review: Is MIPS Spherical Worth the Hype?

Robert Wilson · 2026-10-09

Are helmets still getting safer? Surely we must be reaching the limits of innovation by now? Giro thinks there's still room for improvement; they've just launched the new Montaro Pro with MIPS Spherical technology. Is it just a familiar system in a new guise, or a genuine safety upgrade for your head? We put this almost $330 helmet to the test on the trail. Giro Montaro Pro Helmet | Size M | Weight 1 lb 0.1 oz | Price $329.99 | Manufacturer's website At the end of the day, the best style in the world means nothing if your helmet doesn't keep you safe. Helmet hair beats a fractured skull any day! Once things get rowdy on the trail, one thing matters above all else: protection. For just under $330, Giro equips their new Montaro Pro helmet with MIPS Spherical technology, which is designed to absorb rotational motion in an impact. The technology was developed by Giro (and sister brand Bell) in collaboration with MIPS. But how does the Giro Montaro Pro helmet perform in our test, and can its protection concept, comfort and features justify the hefty price tag? ### The Giro Montaro Pro Helmet: Key Facts At $329.99, the Montaro Pro sits at the upper end of Giro's range. You'll notice it on the scales, too: at a measured 14.9 oz in size S and 1 lb 0.1 oz in size M, this certainly isn't one of the lightest helmets around. Rather than chasing a low weight, Giro has clearly prioritized rotational impact protection. Alongside MIPS Spherical technology, the helmet also meets the NTA 8776 standard. This places more stringent requirements on a helmet than the standard bicycle helmet certification, for use on S-pedelecs. - Technology: MIPS Spherical - Certification: incl. NTA 8776 (S-pedelec standard for higher impact speeds) - Features: FIDLOCK magnetic buckle, vertical adjustment system, glasses storage, adjustable visor - Sizes: S (20–21.7 in) / M (21.7–23.2 in) / L (23.2–24.8 in) - Weight: S: 14.9 oz / M: 1 lb 0.1 oz (measured by us) - Colors: 7 (including light and dark, two-tone and single-color options) - Price: $329.99 ### What Exactly Is MIPS Spherical? MIPS Spherical is a rotational impact protection system designed to reduce the twisting forces generated in an angled impact. Unlike conventional MIPS liner systems, the Giro Montaro Pro helmet uses two decoupled layers of EPS foam that can move relative to each other, much like a ball-and-socket joint. This freedom of movement between the two layers is at the heart of the system. Unlike conventional MIPS solutions, there's no additional plastic liner sitting directly against your head. One particularly useful benefit of this construction is that the ventilation openings and internal air channels remain unobstructed. This is how the two layers move relative to each other. Here, the grey outer shell sits lower, while here, the outer shell has shifted upwards, exposing more of the blue inner shell. Giro has put some thought into comfort, too. In addition to the usual fit adjustment via a dial, the Roc Loc Trail Air fit system lets you adjust the helmet's position vertically, keeping the shell slightly raised above the top of your head. Together with the helmet's vents and internal air channels, this should help to channel fresh air over your head while allowing warm air to escape. There's another interesting detail for sweaty days on the trail: the Ionic+ pads contain pure silver, which is claimed to provide lasting, natural odor protection. The visor adds some practical functionality. It offers two adjustment positions, leaving enough room underneath to store your glasses. The magnetic FIDLOCK buckle is designed to make one-handed opening and closing easier, while still locking securely into place. Giro also includes an emergency sheet for your personal details, which can be a lifesaver in case of an accident. ### Our Verdict After putting the Giro Montaro Pro through its paces, we're impressed. The MIPS Spherical technology isn't just a gimmick; it offers genuine rotational impact protection without compromising ventilation. The helmet is comfortable, well-ventilated, and packed with thoughtful features. However, the high price and relatively heavy weight might give some riders pause. If you prioritize safety above all else and don't mind spending a bit more, the Montaro Pro is an excellent choice. But if you're on a budget or counting every gram, there are lighter and more affordable options out there. In short: the Giro Montaro Pro with MIPS Spherical is a solid investment for your noggin. It's not the lightest or the cheapest, but it might just be one of the safest.