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GMax OF77 Helmet - Solid


The OF77 has a kitten-soft interior with a large face shield which lets you see everything around you.



GMax OF77 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.


  • 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
  • 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
  • Soft padded chin strap
  • Helmet bag included
  • Optional LED brake light kit (sold separately)


Black / 2XL 10009168 7248542X Out of Stock
Black / 3XL 10009169 7248543X Out of Stock
Black / LG 10009170 724854L Out of Stock
Black / MD 10009171 724854M Out of Stock
Black / SM 10009172 724854S Out of Stock
Black / XL 10009173 724854X Out of Stock
Black / XS 10009174 724854XS Out of Stock
Matte Black / 2XL 10009175 7248552X Out of Stock
Matte Black / 3XL 10009176 7248553X Out of Stock
Matte Black / LG 10009177 724855L Out of Stock
Matte Black / MD 10009178 724855M Out of Stock
Matte Black / SM 10009179 724855S Out of Stock
Matte Black / XL 10009180 724855X Out of Stock
Matte Black / XS 10009181 724855XS Out of Stock
Pearl White / 2XL 10009189 7248572X Out of Stock
Pearl White / 3XL 10009190 7248573X Out of Stock
Pearl White / LG 10009191 724857L Out of Stock
Pearl White / MD 10009192 724857M Out of Stock
Pearl White / SM 10009193 724857S Out of Stock
Pearl White / XL 10009194 724857X Out of Stock
Pearl White / XS 10009195 724857XS Out of Stock
Red / XS 10009209 724859XS Out of Stock
Wine / 2XL 10009203 7248592X Out of Stock
Wine / 3XL 10009204 7248593X Out of Stock
Wine / LG 10009205 724859L Out of Stock
Wine / MD 10009206 724859M Out of Stock
Wine / SM 10009207 724859S Out of Stock
Wine / XL 10009208 724859X Out of Stock
2XL / Candy Red 10009196 7248582X Out of Stock
3XL / Candy Red 10009197 7248583X Out of Stock
LG / Candy Red 10009198 724858L Out of Stock
MD / Candy Red 10009199 724858M Out of Stock
SM / Candy Red 10009200 724858S Out of Stock
XL / Candy Red 10009201 724858X Out of Stock
XS / Candy Red 10009202 724858XS Out of Stock
2XL / Titanium 10009182 7248562X Out of Stock
3XL / Titanium 10009183 7248563X Out of Stock
LG / Titanium 10009184 724856L Out of Stock
MD / Titanium 10009185 724856M Out of Stock
SM / Titanium 10009186 724856S Out of Stock
XL / Titanium 10009187 724856X Out of Stock
XS / Titanium 10009188 724856XS Out of Stock


GMax Helmet Sizing

For riders falling between sizes, we recommend sizing down.

XS 53-54
SM 55-56
MD 57-58
LG 59-60
XL 61-62
2XL 63-64
3XL 65-66
4XL 67-68


Sizing information is provided by the manufacturer and does not guarantee a perfect fit.

How to Measure

  • H HEAD
    Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, repeat for good measure and use the largest measurement.

Additional information


Black, Matte Black, Pearl White, Red, Wine, Candy Red, Titanium


XS, SM, MD, LG, XL, 2XL, 3XL


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Found it for less?
U-Bike will match any advertised price on new merchandise available through another authorized U.S. dealer.


Doesn't fit? Don't love it?
Return any unused item within 90 days for a full refund.