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What does the Insurgent Spherical page mean by Spherical Technology?
Giro describes a Mips-powered ball-and-socket arrangement with an outer liner that can rotate around an inner liner and different-density EPS/EPP layers. That is a manufacturer design description, not a comparative crash result, medical claim or guarantee of injury reduction for an individual rider.
Explore this need in the finder →Can I include this model in a shortlist that requires CPSC evidence?
No, not on the exact US style-022 page checked here. It lists CE EN 1078 and does not state US CPSC compliance, so the required-CPSC finder condition excludes it. Verify the actual helmet's label and current manufacturer documentation before purchase or use.
Explore this need in the finder →Which paired size should a particular head measurement choose?
The page offers XS/S, M/L and XL/2XL, but no exact circumference range is documented for those paired labels in the evidence checked for this assessment. The generic Giro chart is not used to guess a mapping; confirm the current style-022 fitting instructions and try the exact helmet before relying on a size choice.
Explore this need in the finder →The Giro Insurgent Spherical is a different kind of bicycle helmet from the open road and trail half-shells elsewhere in this library. Giro's US product data categorizes style 100000001500000022 as Full-Face, its product description targets gravity riders, and the official image shows an integrated chinbar. That makes it relevant to a rider comparing downhill-style coverage, not a universal answer for everyday commuting or every trail ride.
Gravity focus and coverage
Giro positions the Insurgent Spherical for gravity riding, referencing Rampage and the Enduro World Series. The product page describes a chinbar/full-face configuration and a large set of intake and exhaust openings. The distinction from a full-cut half-shell is important: a rearward-extended shell still does not provide a chinbar, while this full-face format changes coverage, weight and the rider's fit checks. The activity description helps establish the intended category, but it does not make the helmet suitable for every event. Riders should verify the current rules for their specific discipline and the condition of the exact helmet.Spherical design is a construction description, not a result
The product page describes Spherical Technology powered by Mips: an outer liner that can rotate around an inner liner, with different-density EPS and EPP layers. Giro presents this as a ball-and-socket design intended to manage impact energy. This assessment treats that wording as a documented design feature only. It is not an independent crash test, a rating, or a guarantee that injury will be prevented. Spherical is also a separate product label from standard integrated Mips; when a shopper selects a Spherical requirement, the exact model page must identify that arrangement. Giro describes optimized front intake vents and rear exhaust vents, and claims cooling efficiency 50 percent higher than the Disciple Mips. It also says the M/L version weighs 1,040 g and is 200 g lighter than the Disciple Mips. Those are manufacturer-stated comparisons, not measurements or tests conducted for this review. The page does not provide the test method or a numeric vent total, so this record does not use the percentage as a ranking against other helmets. A full-face helmet's coverage and structure are likely more important to weigh against an open shell than an unattributed cooling claim.Fit and size uncertainty
The exact page lists XS/S, M/L and XL/2XL. Giro's general adult chart gives circumference intervals for individual letter sizes, but the evidence checked here does not map the Insurgent's paired labels to an exact circumference range. The generic chart is not a reliable basis for guessing which paired size fits a particular head, so this assessment leaves the numeric boundary unknown and does not match the model to a measured circumference. A number-only shortlist cannot replace Giro's exact sizing instructions and a try-on. The Roc Loc Air DH fit system is described as adjustable for tension and fore-aft tilt. Giro also says each size includes two cheek-pad thicknesses that attach with a directional snap system and can be removed without disturbing the rider's head and neck position. These features provide ways to tune the fit and service the pads, but they do not establish that the shell will fit an individual rider, that goggles will fit, or that the offered package contains every component shown in seller photos. Confirm the exact size, pads and fit instructions with the seller and the current manufacturer documentation.Standards and purchase checks
The US product page lists CE EN 1078 and 1,040 g for M/L, but it does not state US CPSC compliance. That is an unknown in this evidence record, not a claim that the physical helmet fails a standard. It means the Insurgent does not qualify for this site's CPSC-required shortlist on the available exact-page evidence. If that standard is essential, check the physical label and current exact-model documentation before proceeding; do not treat the Mips/Spherical system or CE listing as a substitute answer to a CPSC requirement. The page also describes tool-free breakaway visor bolts, a central visor-bolt mounting point for a POV camera, and a lower flex gasket. The gasket is presented as a design intended to reduce the helmet's role in certain collarbone impacts; this wording is not an independently demonstrated injury outcome. Camera, goggles and other riding equipment should not be assumed included. Inspect the chinbar, fasteners, liner, straps and padding for the exact offered condition, and review current recalls and seller return terms before buying.Bottom line
The Insurgent Spherical is worth considering only for a rider specifically comparing a full-face gravity helmet and the documented Spherical/Mips design. It offers detailed manufacturer descriptions of airflow paths, cheek-pad adjustment, visor hardware and fit-system controls, with a stated M/L weight. Its major evidence gaps are equally important: no CPSC statement on the US page, no verified circumference mapping for the paired sizes, no independent fit result and no independent performance test. A gravity-oriented buyer should verify the exact size and standards label first, then compare coverage, fit and package details against current alternatives. This review is an evidence-based assessment, not a downhill test or safety certification.Key specifications
Key details at a glance
| Helmet style | Full face |
|---|---|
| Listed fit sizes | XS/S / M/L / XL/2XL |
| Rotational-impact design | Spherical Technology powered by Mips |
| Fit adjuster | Roc Loc Air DH |
| Fit adjustments described | Tension adjustment / Fore-aft tilt adjustment |
Use the exact model’s instructions for operating limits, supplied equipment and version differences.
Sources for this review
Sources for this assessment
Compare the model with your own constraints
A model assessment cannot decide fit by itself. Use the finder to combine riding use, head circumference and documented features, then verify the exact helmet and instructions.