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GMAX Helmets

GMAX OF-87 Duke Helmet (2024) - Black

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Product OverviewOEM Verified Specifications

The GMAX OF-87 (2024) redefines the open-face category with a structural architecture that prioritizes unobstructed visibility and premium material integration. While categorized under full-face helmets in broader retail taxonomies, this specific model is engineered as a high-end open-face unit, utilizing a shell design that balances aerodynamic stability with the classic "chopper" aesthetic. The construction relies on a robust composite shell that supports the helmet's weight distribution, ensuring it remains secure during high-speed cruising without the bulk of a full-face counterpart. This design philosophy is evident in the inclusion of a drop-down inner sun shield, a feature typically reserved for top-tier touring helmets, which allows riders to manage glare without removing the helmet or donning separate eyewear, thereby maintaining a seamless line of sight and reducing cognitive load during long-distance rides.

Interior comfort is maximized through a dual-density SpaSoft liner paired with CoolMax technology, creating a microclimate that actively manages moisture and temperature. The SpaSoft material provides a plush, high-density cushioning layer that conforms to the rider's head shape, eliminating pressure points that often plague lesser open-face units. Complementing this is the CoolMax fabric, which is engineered to wick sweat away from the skin and accelerate evaporation, keeping the rider cool in warm weather conditions. This combination is further enhanced by well-executed ventilation systems that channel fresh air across the face and exhaust hot air efficiently, while the quick-release buckle ensures rapid donning and doffing, a critical ergonomic feature for riders who frequently stop and start in urban or touring environments.

Safety and performance are anchored by the helmet's premium feature set, including optional LED lighting that enhances visibility in low-light conditions. While specific impact certification data is not listed in the provided specifications, the inclusion of advanced lighting and a secure retention system underscores GMAX's commitment to rider safety beyond basic shell integrity. The optional LED lighting serves as a critical visibility aid, making the rider more conspicuous to other motorists during dawn, dusk, or night riding. Combined with the structural rigidity of the shell and the secure fit provided by the dual-density liner, the OF-87 delivers a package that offers the inherent value of premium features—such as integrated sun shields and active climate control—at a price point that remains accessible to a wide range of motorcycle enthusiasts.

Product Classification

Open Face 3/4 HelmetHELMETS > Open Face Helmets > Open Face 3/4 Helmet

Unit / Package Weight

4.45 lbs (2.02 kg)

Dimensions (L x W x H)

15" x 11" x 11.3"

UPS Dimensional Weight

14 lbs (Billable: 14 lbs)

Discipline & Application

Street (2024)

$162.95

Available

RIDER SIZING SPECIFICATION | Human Body & Headform Sizing

Helmets and apparel are sized to human body measurements. View the Official Sizing Guide below.

Colorway: Black5 Available Colors

Select Size: 2X-Large (O1187028 / #72-73462X)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyNot Available

Product OverviewOEM Verified Specifications

Product Classification

Open Face 3/4 HelmetHELMETS > Open Face Helmets > Open Face 3/4 Helmet

Unit / Package Weight

4.45 lbs (2.02 kg)

Dimensions (L x W x H)

15" x 11" x 11.3"

UPS Dimensional Weight

14 lbs (Billable: 14 lbs)

Discipline & Application

Street (2024)

GMAX Helmets Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (3)

OEM Technical Standards

This design philosophy is evident in the inclusion of a drop-down inner sun shield, a feature typically reserved for top-tier touring helmets, which allows riders to manage glare without removing the helmet or donning separate eyewear, thereby maintaining a seamless line of sight and reducing cognitive load during long-distance rides.
Complementing this is the CoolMax fabric, which is engineered to wick sweat away from the skin and accelerate evaporation, keeping the rider cool in warm weather conditions.
This combination is further enhanced by well-executed ventilation systems that channel fresh air across the face and exhaust hot air efficiently, while the quick-release buckle ensures rapid donning and doffing, a critical ergonomic feature for riders who frequently stop and start in urban or touring environments.

Materials & Construction (6)

OEM Technical Standards

The GMAX OF-87 (2024) redefines the open-face category with a structural architecture that prioritizes unobstructed visibility and premium material integration.: While categorized under full-face helmets in broader retail taxonomies, this specific model is engineered as a high-end open-face unit, utilizing a shell design that balances aerodynamic stability with the classic "chopper" aesthetic.
The construction relies on a robust composite shell that supports the helmet's weight distribution, ensuring it remains secure during high-speed cruising without the bulk of a full-face counterpart.
Interior comfort is maximized through a dual-density SpaSoft liner paired with CoolMax technology, creating a microclimate that actively manages moisture and temperature.: The SpaSoft material provides a plush, high-density cushioning layer that conforms to the rider's head shape, eliminating pressure points that often plague lesser open-face units.
Safety and performance are anchored by the helmet's premium feature set, including optional LED lighting that enhances visibility in low-light conditions.: While specific impact certification data is not listed in the provided specifications, the inclusion of advanced lighting and a secure retention system underscores GMAX's commitment to rider safety beyond basic shell integrity.
The optional LED lighting serves as a critical visibility aid, making the rider more conspicuous to other motorists during dawn, dusk, or night riding.
Combined with the structural rigidity of the shell and the secure fit provided by the dual-density liner, the OF-87 delivers a package that offers the inherent value of premium features—such as integrated sun shields and active climate control—at a price point that remains accessible to a wide range of motorcycle enthusiasts.

Additional Features & Specifications (2)

OEM Technical Standards

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

End of Product Information

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Harley-Davidson · 2017–2024

Road Glide / Street Glide M8

Milwaukee-Eight 107/114/117ci

4.0 qt 20W-50 | Formula+ Primary | 80W-140 Trans

Yamaha · 2020–2025

Ténéré 700 (T7)

689cc CP2 Crossplane Twin

2.6 L 10W-40 | 525 Chain | 90/90-21 & 150/70R18

Honda · 2020–2025

CRF1100L Africa Twin

1084cc Unicam Parallel Twin

4.0L Manual / 4.2L DCT | SILMAR8A9S Iridium

Kawasaki · 2019–2025

Ninja ZX-6R (636)

636cc DOHC Inline-Four

3.6 L 10W-40 | 520 Chain (112L) | 127 N·m Axle

Polaris · 2019–2025

RZR XP 1000 / XP 4

999cc ProStar DOHC Twin

2.5 qt PS-4 5W-50 | AGL Trans | Demand Drive

Can-Am · 2018–2025

Maverick X3 Turbo / Turbo R

Rotax ACE 900cc Turbocharged

3.5 L 0W-40 | QRS-X CVT | 75W-140 Gearbox

Polaris · 2018–2025

General 1000 / XP 1000

999cc ProStar 100 HP Twin

2.5 qt PS-4 5W-50 | 122 N·m Lug | AGL Gearcase

Can-Am · 2020–2025

Defender HD10 / MAX

Rotax 976cc V-Twin 82 HP

2.2 L 5W-40 | 100 N·m Lug | PRO-TORQ CVT

Verified Technical Reference

Frequently Asked Questions

Consult the authentic option and part number matrix under the Technical Specifications and Fitment tab. You can match the authentic OEM Manufacturer Part Number (MPN) or ride model specifications to confirm exact compatibility.

GMAX Helmets

GMAX OF-87 Duke Helmet (2024) - Black

Photo 1 of 2 | Click to Enlarge

Product OverviewOEM Verified Specifications

Product Classification

Open Face 3/4 HelmetHELMETS > Open Face Helmets > Open Face 3/4 Helmet

Unit / Package Weight

4.45 lbs (2.02 kg)

Dimensions (L x W x H)

15" x 11" x 11.3"

UPS Dimensional Weight

14 lbs (Billable: 14 lbs)

Discipline & Application

Street (2024)

$162.95

Available

RIDER SIZING SPECIFICATION | Human Body & Headform Sizing

Helmets and apparel are sized to human body measurements. View the Official Sizing Guide below.

Colorway: Black5 Available Colors

Select Size: 2X-Large (O1187028 / #72-73462X)

Proceed to Checkout

Free US ShippingOrders over $150

30-Day ExchangesHassle-free size swap

Manufacturer WarrantyNot Available

Product OverviewOEM Verified Specifications

Product Classification

Open Face 3/4 HelmetHELMETS > Open Face Helmets > Open Face 3/4 Helmet

Unit / Package Weight

4.45 lbs (2.02 kg)

Dimensions (L x W x H)

15" x 11" x 11.3"

UPS Dimensional Weight

14 lbs (Billable: 14 lbs)

Discipline & Application

Street (2024)

GMAX Helmets Technical Performance & Engineering

Key engineered features, technical highlights, and manufacturer specifications

Authentic Specifications

Safety & Protection (3)

OEM Technical Standards

This design philosophy is evident in the inclusion of a drop-down inner sun shield, a feature typically reserved for top-tier touring helmets, which allows riders to manage glare without removing the helmet or donning separate eyewear, thereby maintaining a seamless line of sight and reducing cognitive load during long-distance rides.
Complementing this is the CoolMax fabric, which is engineered to wick sweat away from the skin and accelerate evaporation, keeping the rider cool in warm weather conditions.
This combination is further enhanced by well-executed ventilation systems that channel fresh air across the face and exhaust hot air efficiently, while the quick-release buckle ensures rapid donning and doffing, a critical ergonomic feature for riders who frequently stop and start in urban or touring environments.

Materials & Construction (6)

OEM Technical Standards

The GMAX OF-87 (2024) redefines the open-face category with a structural architecture that prioritizes unobstructed visibility and premium material integration.: While categorized under full-face helmets in broader retail taxonomies, this specific model is engineered as a high-end open-face unit, utilizing a shell design that balances aerodynamic stability with the classic "chopper" aesthetic.
The construction relies on a robust composite shell that supports the helmet's weight distribution, ensuring it remains secure during high-speed cruising without the bulk of a full-face counterpart.
Interior comfort is maximized through a dual-density SpaSoft liner paired with CoolMax technology, creating a microclimate that actively manages moisture and temperature.: The SpaSoft material provides a plush, high-density cushioning layer that conforms to the rider's head shape, eliminating pressure points that often plague lesser open-face units.
Safety and performance are anchored by the helmet's premium feature set, including optional LED lighting that enhances visibility in low-light conditions.: While specific impact certification data is not listed in the provided specifications, the inclusion of advanced lighting and a secure retention system underscores GMAX's commitment to rider safety beyond basic shell integrity.
The optional LED lighting serves as a critical visibility aid, making the rider more conspicuous to other motorists during dawn, dusk, or night riding.
Combined with the structural rigidity of the shell and the secure fit provided by the dual-density liner, the OF-87 delivers a package that offers the inherent value of premium features—such as integrated sun shields and active climate control—at a price point that remains accessible to a wide range of motorcycle enthusiasts.

Additional Features & Specifications (2)

OEM Technical Standards

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

End of Product Information

Complete Your Setup

MPN
DPN1
SKU
UPC	Not Available
MMW
Package Shipping Weight	4.45 lbs
Shipping Box Dimensions	15" L x 11" W x 11.3" H
Shipping Box Length (Depth)	15 in
Shipping Box Width	11 in
Shipping Box Height	11.3 in
UPS Dimensional Weight	14 lbs (Volumetric)
UPS Billable Shipping Weight	14 lbs (Volumetric / Dimensional)
Freight Classification Code	SFR
Shipping Box Count	1 Individual Carton
Origin	Not Available
Wps L1	Helmets & Accessories
Warranty Coverage	Not Available

MPN
DPN1
SKU
UPC	Not Available
MMW
Package Shipping Weight	4.45 lbs
Shipping Box Dimensions	15" L x 11" W x 11.3" H
Shipping Box Length (Depth)	15 in
Shipping Box Width	11 in
Shipping Box Height	11.3 in
UPS Dimensional Weight	14 lbs (Volumetric)
UPS Billable Shipping Weight	14 lbs (Volumetric / Dimensional)
Freight Classification Code	SFR
Shipping Box Count	1 Individual Carton
Origin	Not Available
Wps L1	Helmets & Accessories
Warranty Coverage	Not Available