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HJC i11 Acid Skull

Name: HJC i11 Acid Skull
Brand: HJC
SKU: 0810400503
Price: 209.99 USD
Availability: InStock

SKU: 0810400503

DOT Snell M2025D (3XL-5XL DOT only)

$209.99

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Color Black/Beige

Size XS

Wrong size? We fix it for free.

Every helmet at Ride Depot comes with our Size Guarantee. If the size you ordered does not fit, we send you a prepaid return label and ship the size you need at no cost to you. One free exchange per order.

How it works

Try the helmet on as soon as it arrives, before you remove any tags, stickers or protective films.
Keep everything: the box, papers, labels and stickers. The helmet must come back to us in brand new condition.
If the fit is not right, email us at hello@ridedepot.com within 30 days and tell us the size you need.
We email you a free return label and your new size ships out as soon as the original is on its way back.

The helmet must be unworn beyond an indoor try on, in its original packaging with all parts, tags and stickers in place. Helmets that have been ridden in, dropped, or stripped of tags cannot be exchanged.

The HJC i11 Acid Skull Helmet delivers a punch of energy and attitude with a head-turning graphic made for riders who like to stand out.

Have a question?

You can't decide? Let us know.

Why riders pick it

Advanced Polycarbonate Compound (APC) shell
ACS - advanced channeling ventilation system: Three intake vents and five exhaust ports for maximum airflow
Improved mouth vent enhances defogging and breathability
Pinlock Ready HJ-38 Visor: Provides 99% UV protection, Anti-Scratch coated
Photochromic ShadeX visor compatible (sold separately)
Moisture wicking liner is quick drying and odor resistant
Emergency quick-release cheek pads for added safety
SMART HJC Bluetooth ready (Bluetooth unit sold separately)

Specs

BrandHJC

Helmet TypeFull-Face

ShellAdvanced Polycarbonate Composite

VentilationACS Advanced Channeling Ventilation System, top/lower vents

ShieldHJ-38, 99% UV protection, Anti-fog, Pinlock ready

LinerAnti-bacterial fabric, moisture-wicking, quick-drying

Warranty3 years from purchase or 5 years from manufacture

CertificationDOT · Snell M2025D (3XL-5XL DOT only)

CategoryHelmets

SKU0810400503

In the box

Breath deflector
Chin curtain

Details

The HJC i11 Acid Skull Helmet delivers a punch of energy and attitude with a head-turning graphic made for riders who like to stand out. Whether you're charging through city streets or carving through open roads, this helmet's bold style keeps up with your pace.Built on the lightweight, aerodynamic i11 platform, it's designed for speed, airflow, and long-haul comfort. With advanced ventilation, race-fit interior, and confidence-inspiring stability, the i11 Acid Skull is ready to match your every move, no matter where the ride takes you.

Complete the build

Riders who bought this also added these.

Cardo

HJC Spirit

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Cardo

HJC 4X

$299.95

HJC i11 Acid Skull

$209.99

Helmet size guide

Wrap a soft tape measure around the widest part of your head, about 1 in (2.5 cm) above your eyebrows and ears. Measure twice. If you fall between sizes, choose the larger.

Size	cm	inches	Hat size
3XS (youth)	50–51	19¾–20⅛	6¼–6⅜
2XS (youth)	52–53	20½–20⅞	6½–6⅝
XS	54–55	21¼–21⅝	6¾–6⅞
S	55–56	21⅝–22	6⅞–7
M	57–58	22¼–22⅞	7⅛–7¼
L	58–59	23¼–23⅝	7¼–7⅜
XL	60–61	23⅝–24	7½–7⅝
2XL	62–63	24⅜–24¾	7¾–7⅞
3XL	64–65	25⅛–25½	8–8⅛
4XL	66–67	26–26⅜	8¼–8⅜
5XL	68–69	26¾–27⅛	8½–8⅝

Official HJC chart. Between sizes? Measure your head at its widest point and try the smaller size first.

A correct fit is firm with even pressure all around, no tight spots, and the helmet shouldn’t rotate when you shake your head. Cheek pads break in slightly with use. Available sizes vary by model, check the selector above.

HJC i11 Acid Skull

Have a question?

Why riders pick it

Specs

In the box

Details

Complete the build

HJC Spirit

HJC 4X

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