Product Details

The GMAX OF-87 Duke Helmet delivers the freedom of an open-face helmet while incorporating premium features typically found on more expensive models. Designed for riders who value comfort, visibility, and style, the OF-87 Duke combines bold graphics with practical features for everyday riding.

A lightweight DOT-approved shell helps reduce fatigue on longer rides, while the anti-fog coated internal drop-down sun shield allows riders to quickly adapt to changing light conditions without changing eyewear. The large eye port provides an excellent peripheral field of vision, making the helmet ideal for city streets, scenic highways, and relaxed weekend rides.

Inside, the dual-density SpaSoft™ and COOLMAX® comfort liner wicks moisture away from the rider to help keep you cool, dry, and comfortable. The removable, washable interior and adjustable cheek pads make it easy to maintain a fresh interior while achieving a more personalized fit.

The GMAX D.E.V.S. (Dual Exhaust Venting System) uses adjustable top, side, and rear vents to promote continuous airflow through the helmet. Deluxe ear pockets provide room for communication system speakers, while the quick-release buckle makes securing and removing the helmet fast and convenient. Riders can also upgrade with the optional LED rear safety light kit for additional visibility.

Features

Lightweight, DOT approved shell
Anti-fog coated inner drop-down sun shield
Multi-density SpaSoft, CoolMax comfort liner and cheek pads move the moisture away from your head, and the fabric dries quickly, keeping you dry and comfortable.
Removable / washable interior and adjustable cheek pads allow for more comfortable sizing.
GMAX "D.E.V.S." adjustable Dual Exhaust Venting System- top side and rear venting
Large eye port for improved peripheral range of vision
Deluxe ear pockets with built-in space for speakers for use of communication systems.
Soft padded chin strap with quick-release buckle
Optional new and improved LED light kit (brake light connector sold separately)
Helmet bag included

Sizing Info

The GMAX OF-87 Duke features an intermediate oval fit designed to accommodate most riders comfortably. A proper fit should feel snug around your head with even pressure and secure cheek pad contact without creating uncomfortable pressure points.

Measure the circumference of your head approximately one inch above your eyebrows and compare your measurement with the GMAX size chart before ordering. The comfort liner will naturally break in slightly over time for a more personalized fit.

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Gmax OF-87 Duke Helmet (2024)

Name: Gmax OF-87 Duke Helmet (2024)
Brand: Gmax
Price: 162.95 USD
Availability: InStock

Brand: Gmax

Type: Helmet

$170.95

$170.95 ~~$170.95~~

Shipping calculated at checkout.

Available in stock (9)

Riding Styles

Commuting, Cruiser, Street, Touring

The GMAX OF-87 is a premium open face helmet boasting the most desirable features to achieve the epitome of comfort, safety and styling. Dual density SpaSoft and CoolMax interior, optional LED lighting, well executed ventilation, a quick release buckle, and a drop-down inner sun shield highlight why the OF-87 is the obvious choice for riders who appreciate the inherent value of premium features delivered at affordable prices.

Color: Matte Black/Green

Size: XS

XS SM MD LG XL 2XL 3XL

GMAX Helmet Size Charts

To find your approximate helmet size, use a soft sewing tape measure. Start at your forehead about one inch above your eyebrows and measure around the largest portion of the back of your head. If you do not have a soft measuring tape, use a string or phone charging cord, then lay it flat and measure it with a ruler.

GMAX Full Face Helmet Size Chart

Size	Head Size (CM)	Head Size (IN)
YS	49–50 cm	Approx. 19–20 in
YM	51–52 cm	Approx. 20–21 in
YL / XS	53–54 cm	Approx. 21 in
S	55–56 cm	Approx. 21–22 in
M	57–58 cm	Approx. 22 in
L	59–60 cm	Approx. 23 in
XL	61–62 cm	Approx. 24 in
2XL	63–64 cm	Approx. 24–25 in
3XL	65–66 cm	Approx. 25 in

GMAX Modular Helmet Size Chart

Size	Head Size (CM)	Head Size (IN)
YS	49–50 cm	Approx. 19–20 in
YM	51–52 cm	Approx. 20–21 in
YL / XS	53–54 cm	Approx. 21 in
S	55–56 cm	Approx. 21–22 in
M	57–58 cm	Approx. 22 in
L	59–60 cm	Approx. 23 in
XL	61–62 cm	Approx. 24 in
2XL	63–64 cm	Approx. 24–25 in
3XL	65–66 cm	Approx. 25 in

GMAX Off-Road Helmet Size Chart

Size	Head Size (CM)	Head Size (IN)
YS	49–50 cm	Approx. 19–20 in
YM	51–52 cm	Approx. 20–21 in
YL / XS	53–54 cm	Approx. 21 in
S	55–56 cm	Approx. 21–22 in
M	57–58 cm	Approx. 22 in
L	59–60 cm	Approx. 23 in
XL	61–62 cm	Approx. 24 in
2XL	63–64 cm	Approx. 24–25 in
3XL	65–66 cm	Approx. 25 in

GMAX Half Helmet Size Chart

Size	Head Size (CM)	Head Size (IN)
YS	49–50 cm	Approx. 19–20 in
YM	51–52 cm	Approx. 20–21 in
YL / XS	53–54 cm	Approx. 21 in
S	55–56 cm	Approx. 21–22 in
M	57–58 cm	Approx. 22 in
L	59–60 cm	Approx. 23 in
XL	61–62 cm	Approx. 24 in
2XL	63–64 cm	Approx. 24–25 in
3XL	65–66 cm	Approx. 25 in

GMAX Youth Helmet Size Chart

Size	Head Size (CM)	Head Size (IN)
YS	49–50 cm	Approx. 19–20 in
YM	51–52 cm	Approx. 20–21 in
YL / XS	53–54 cm	Approx. 21 in
S	55–56 cm	Approx. 21–22 in
M	57–58 cm	Approx. 22 in
L	59–60 cm	Approx. 23 in
XL	61–62 cm	Approx. 24 in
2XL	63–64 cm	Approx. 24–25 in
3XL	65–66 cm	Approx. 25 in

Free Shipping over $75
Free Returns Within 45 days

Product Details

Features

Lightweight, DOT approved shell
Anti-fog coated inner drop-down sun shield
Multi-density SpaSoft, CoolMax comfort liner and cheek pads move the moisture away from your head, and the fabric dries quickly, keeping you dry and comfortable.
Removable / washable interior and adjustable cheek pads allow for more comfortable sizing.
GMAX "D.E.V.S." adjustable Dual Exhaust Venting System- top side and rear venting
Large eye port for improved peripheral range of vision
Deluxe ear pockets with built-in space for speakers for use of communication systems.
Soft padded chin strap with quick-release buckle
Optional new and improved LED light kit (brake light connector sold separately)
Helmet bag included

Sizing Info

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Gmax OF-87 Duke Helmet (2024)

$170.95

$170.95 ~~$170.95~~

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Product Details

Features

Sizing Info

Gmax OF-87 Duke Helmet (2024)