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GMax OF77 Derk Matte Black/Silver Open Face Helmet

by GMax Helmets
GMax OF77 Derk Matte Black/Silver Open Face Helmet

Item Description

GMax OF77 Derk Matte Black/Silver Open Face Helmet

The GMax OF77 Helmet is based off of the very successful GM67. It features the Spa Soft and CoolMax interior and multi-density cheek pads. The OF77 is like having two helmets in one. It offers the comfort of an open helmet, plus it quickly and easily converts to a full face helmet for those looking for increased protection and comfort with the installation of the optional jaw piece.

- DEVS adjustable Dual Exhaust Venting System, top, side and rear venting reduces fogging and sweating by allowing hot air to escape from the mouth area and top of head.
- Large eye port for improved peripheral and range of vision
- Spa Soft, CoolMax comfort liner and cheek pads move the moisture away from your body and the fabric dried quickly
- Removable/washable interior and adjustable cheek pads allow for more comfortable sizing
- Deluxe ear pockets with built in space for speakers for use of communication systems
- Snap in snowmobile chin curtain for added warmth and reduces wind noise
- Soft padded chin strap
- Helmet bag included
- Optional LED light kit (sold separately)
Country Of Origin: Imported

Item Details

  • Lightweight DOT approved Thermo-Plastic Alloy shell
  • Anti-fog coated inner sun shield easily raised or lowered with a lever located on the exterior of the helmet
  • Cheek pads feature a multi-density foam construction creating a superior fit
  • Optional removable jaw piece (sold separately)
  • SPC top front vents/interior and styro designed for a controlled air flow

Manufacturers Part Number


Size Chart

GMAX Helmets
U.S. Hat Size
63/4 7 - 71/8 71/4 - 75/8 71/2 73/4 - 77/8 8 - 81/8 81/4 - 83/8
211/4" - 215/8" 22" - 227/16" 2213/16 - 231/4" 235/8" - 24" 243/8" - 2413/16" 253/16" - 255/8" 26" - 263/8"
55 - 54 56 - 57 58 - 59 60 - 61 62 - 63 64 - 65 66 - 67

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(Item #: 4R-15743537)
(Search ID #: 15743540)
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