Giro Tyrant Spherical Helmet

$120⁰⁰ $160⁰⁰

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Color

Matte Metallic Black / Ano Lime Matte Black Hypnotic Matte Black Matte Citron Matte Portaro Grey

Size

S M L

In Stock Ships Immediately

Giro | SKU: 7113389 | Option: Matte Black Hypnotic, S

This item is "Final Sale" and cannot be returned or exchanged

This item is "Final Sale" and cannot be returned or exchanged. Once the order is processed, labeled, or shipped, the order cannot be canceled.

Every item goes through quality control prior to shipping. If there are any imperfections or issues, you will be notified prior to the order being processed.

Items on "Final Sale" are for online only. These items are not at our physical stores for purchase.

Pickup currently unavailable at RA Cycles - Brooklyn

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Giro Tyrant Spherical Helmet Info

The Giro Tyrant Spherical Helmet is built for trail and enduro riding with a protection system that goes beyond what standard MIPS helmets offer. "Spherical" refers to Giro's dual-layer foam technology developed with MIPS: an outer EPS layer handles high-energy impacts, while an inner EPP layer provides rebound characteristics for lower-speed tumbles and roll-around crashes. The two layers work like a ball and socket, redirecting impact energy away from the head across a broader range of crash scenarios than a single-foam construction addresses — the kind of range that matters on trail, where crashes happen at varying speeds and on unpredictable terrain.

The two-piece shell combines an in-mold EPS/EPP upper with a HardBody polycarbonate lower wrap permanently fused to the liner. The hard outer surface at the lower edge adds meaningful impact resistance where trail debris — rocks, roots, the ground — is most likely to make contact, without the weight penalty of a fully hard-shelled helmet. Fit is handled by the Roc Loc Air DH system, which suspends the helmet slightly off the skull to open a direct airflow channel over the head. The DH designation isn't marketing; it signals the system was designed for the stability demands of descending, where a helmet that shifts or bounces is genuinely distracting. Adjustment is tool-free and quick to dial.

Fourteen vents with internal channeling move air through the helmet efficiently, supplemented by cheek pad ventilation for sweat management during technical climbs. The Stack Ventilation design at the brow line draws warm, humid air upward and away from goggles — a practical feature for riders who've dealt with fogging mid-run. The tool-free bolt-on visor adjusts vertically without tools and offers enough range to stage goggles when the terrain doesn't require them, keeping them accessible without having to stash them in a pack.

Specs at a Glance

Protection: MIPS Spherical — dual-layer EPS + EPP, ball-and-socket construction
Shell: In-mold EPS/EPP upper + HardBody polycarbonate lower wrap
Fit System: Roc Loc Air DH — tool-free, suspends helmet off skull for airflow
Ventilation: 14 vents with internal channels; Stack Ventilation; cheek pad ventilation
Visor: Tool-free bolt-on, vertically adjustable; goggle-compatible
Weight: ~600g (medium)
Certifications: US CPSC; CE
Sizes: XS (47–51cm), S (51–55cm), M (55–59cm), L (59–63cm), XL (61–65cm)
Colors: Matte Metallic Black/Ano Lime, Matte Black Hypnotic, Matte Black, Matte Citron, Matte Portaro Grey

Design Benefits

MIPS Spherical dual-foam system combines EPS for high-energy impact absorption with EPP rebound characteristics for low-speed crashes — a ball-and-socket construction that addresses a wider range of impact scenarios than single-foam designs.
HardBody polycarbonate lower wrap adds durable impact resistance at the lower shell edges where trail contact is most common, without the full weight of a hard-shell construction.
Roc Loc Air DH fit system suspends the helmet off the skull for direct airflow over the head and a stable, locked-in fit suited to rough descending terrain.
Stack Ventilation at the brow line draws warm air upward and away from goggles, reducing fogging during technical riding where goggles and full effort overlap.
Tool-free vertically adjustable visor accommodates goggle staging without carrying tools — accessible on trail without removing the helmet.

The RA Perspective

The Tyrant is the trail helmet we reach for when someone wants serious protection without going to a full-face. The MIPS Spherical system is genuinely different from the standard MIPS liner approach — having both EPS and EPP foam in a ball-and-socket configuration means the helmet addresses a broader spectrum of crashes, not just the high-speed rotational impact that standard MIPS targets. For trail and enduro riding where crashes happen at varying speeds and on varied surfaces, that wider coverage matters.

The HardBody lower wrap is a detail that doesn't get talked about enough. The lower edge of a helmet takes more abuse on trail — clipping rocks, branches, the ground on a roll — and having polycarbonate there adds real durability without making the helmet noticeably heavier. We've seen helmets come back with cracked lower sections that a harder shell would have survived.

At $120 on sale from $160, the Tyrant is priced well for what it delivers. MIPS Spherical at this price point is a legitimate deal — you more commonly see this technology on helmets $50–100 more expensive. The Roc Loc Air DH fit is stable on rough terrain, which matters when you're descending and don't want to be pushing your helmet back into position. The Stack Ventilation and goggle-staging visor are well-executed for riders who run goggles on technical sections and swap to glasses on the climbs.

If you've been looking at full-face helmets for their protection level but want something you can wear all day on mixed terrain, the Tyrant is worth trying on first.

Giro Tyrant Spherical Helmet Size Chart

Giro Disciple - Aether

Size

Head Circumference

47-51cm

51-55cm

55-59cm

59-63cm

61-65cm

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