GMax · OF-77 · GMax OF-77
GMax OF-77 Matte Black
Quick Facts at a Glance
Verified Safety Snapshot
How this helmet’s verified certifications map to recognized safety homologations and crash testing.
Safety standards compliance is based on official manufacturer documentation and public safety laboratory test results. Always verify regional compliance labels on the physical helmet prior to use.
Verified Fit & Sizing Guide
Head shape profile matching and interactive size calculator based on verified manufacturer dimensions.
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Design Concept & Background
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The GMax OF-77 is engineered for riders who prioritize comfort, convenience, and a classic open-face aesthetic. Built with a lightweight polycarbonate shell, this helmet offers a perfect balance of durability and ease of wear, making it an excellent choice for daily commuting and casual cruising. The helmet features an intermediate oval head shape, designed to provide a secure and comfortable fit for a wide range of head profiles. While the open-face architecture naturally promotes superior airflow and peripheral vision, the OF-77 enhances the rider experience with its 3D Max-Dry moisture-wicking liner, ensuring you stay cool and dry even on warmer days. Its sleek, aerodynamic profile minimizes wind drag, while the intuitive design allows for quick and easy visor adjustments. Backed by a comprehensive 5-year warranty, the GMax OF-77 delivers reliable protection and long-term value, proving that you don't have to sacrifice quality for affordability. Whether you are navigating city streets or enjoying a weekend ride, the OF-77 provides the essential features and comfort required for a confident, enjoyable journey.
Key Highlights:
Rider Profile & Intended Use
Where to buy
Price History & Trends
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Product Concept & Specifications
GMax (United States)Engineering & Technical Analysis
The GMax OF-77 Matte Black helmet features a polycarbonate shell for lightweight durability and basic impact protection. Its open-face design prioritizes comfort with a snug fit for intermediate oval head shapes, though ventilation is minimal, offering limited airflow for warmer conditions. Safety tech includes a DOT certification, ensuring compliance with basic safety standards, but lacks advanced features like MIPS or multi-density foam. The helmet is ideal for casual riders seeking affordability and simplicity.
Fit & Shell Structure
Intermediate Oval Shape
Balanced oval fit: standard ergonomic curvature fitting 80%+ of riders.
Safety & Certifications
Acoustics & Aerodynamics
Technology & Convenience
Interactive Size & Fit Finder
How to measure
Wrap a cloth measuring tape around your head just above your eyebrows and ears. Pull the tape comfortably snug, read the length, and repeat for consistency.
Available Colors & Graphics
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Data Confidence & Verification Provenance
Helmetsan enforces field-level verification and multi-source cross-referencing. Unverified values are explicitly flagged rather than estimated.