HJC I11 Acid Helmet

Name: HJC I11 Acid Helmet
Brand: HJC
SKU: 0101-18940
Price: 193.0 USD
Availability: OutOfStock

$193.00

Availability:

Color

SKULL

Size

HJC Helmets Size Chart

Helmet Size Convention Chart
Size	Centimeters	Hat Size	Inches
XS	53 - 54	6 5/8 - 6 3/4	20 7/8 - 21 1/4
S	55 - 56	6 7/8 - 7	21 5/8 - 22
M	57 - 58	7 1/8 - 7 1/4	22 1/2 - 22 7/8
L	59 - 60	7 3/8 - 7 1/2	23 1/4 - 23 5/8
XL	61 - 62	7 5/8 - 7 3/4	24 - 24 3/8
2XL	63 - 64	7 7/8 - 8	24 3/4 - 25 1/4
3XL	65 - 66	8 1/8 - 8 1/4	25 3/8 - 26
4XL	67 - 68	8 3/8 - 8 1/2	26 3/8 - 26 3/4
5XL	69 - 70	8 3/4	27 1/4 - 27 5/8

RPHA Series, i20, i30, i71, i90, i100, C10, C91, FG-17, FG-JET, CS-R3, IS-5, F71, V10, V31
Size	Centimeters	Hat Size	Inches
XS	54 - 55	6 3/4 - 6 7/8	21 1/4 - 21 5/8
S	55 - 56	6 7/8 - 7	21 5/8 - 22
M	57 - 58	7 1/8 - 7 1/4	22 1/2 - 22 7/8
L	58 - 59	7 1/4 - 7 3/8	22 7/8 - 23 1/4
XL	60 - 61	7 1/2 - 7 5/8	23 5/8 - 24
2XL	62 - 63	7 3/4 - 7 7/8	24 3/8 - 24 3/4
3XL	64 - 65	8 - 8 1/8	25 1/4 - 25 5/8

CL-17
Size	Centimeters	Hat Size	Inches
XS	54 - 55	6 3/4 - 6 7/8	21 1/4 - 21 5/8
S	55 - 56	7 - 7 1/8	22 - 22 1/2
M	57 - 58	7 1/4 - 7 3/8	22 7/8 - 23 1/4
L	59 - 60	7 1/2 - 7 5/8	23 5/8 - 24
XL	61 - 62	7 3/4 - 7 7/8	24 3/8 - 24 3/4
2XL	63 - 64	8 - 8 1/8	25 1/4 - 25 5/8
3XL	65 - 66	8 1/8 - 8 1/4	25 5/8 - 26
4XL	67 - 68	8 3/8 - 8 1/2	26 3/8 - 26 3/4
5XL	69 - 70	8 3/4	27 1/4 - 27 5/8

Youth Helmet Size Chart
Size	Centimeters	Hat Size	Inches
S	49 - 50	6 1/8 - 6 1/4	19 1/4 - 19 3/4
M	51 - 52	6 3/8 - 6 1/2	20 - 20 1/2
L	53 - 54	6 5/8 - 6 3/4	20 7/8 - 21 1/4
XL	55 - 56	6 7/8 - 7	21 5/8 - 22

Sizing information is provided by the manufacturer and does not guarantee a perfect fit. Please use this chart as a guide only.

Quantity

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& 30 Days Return

The HJC I11 Acid is a sport-touring full-face helmet that fuses aggressive styling with modern safety and comfort. Designed with HJC’s latest aerodynamic shell and certified to ECE 22.06, the I11 Acid delivers a secure fit, low wind noise, and sharp performance for both city and highway riding.

The Acid graphic adds a bold, high-energy finish that stands out from the crowd while maintaining the clean, refined design language of the I11 series.

Key Features

Advanced polycarbonate shell for impact resistance and reduced weight
ECE 22.06 and DOT certified for the latest global safety standards
Integrated drop-down sun visor operated by a smooth side slider
Pinlock-ready HJ-37 visor with quick-release mechanism
ACS Advanced Channel Ventilation for steady airflow and anti-fog performance
Removable and washable SuperCool interior with antibacterial fabric
Double-D ring retention system for a race-ready fit
Built-in speaker pockets for Bluetooth communication systems
Acid graphic design with vibrant, modern sport detailing

Fit Guidance
Intermediate-oval head shape. Fits true to size with a snug touring-style fit that relaxes slightly after a few rides.

More details