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    "generated_at": "2026-11-10T21:12:10+00:00",
    "post_type": "helmet",
    "metadata": {
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        "title": "GMax OF-77 Tech Grey",
        "slug": "gmax-of-77-tech-grey",
        "url": "https://helmetsan.com/ja/helmets/gmax-of-77-tech-grey/",
        "language": "ja",
        "brand": "",
        "category": "Open Face",
        "featured_image": "",
        "excerpt": "インナーバイザーを備えた汎用性の高いオープンフェイスヘルメットを、驚きの価格で提供します。 The GMax OF-77 Tech Grey is engineered as a high-integrity Full Face protective system by GMax, utilizing a structural shell constructed from Polycarbonate. This structural layup is engineered to provide progressive kinetic energy dissipation during impact deceleration, distributing localized shock across outer lamina layers while minimizing deformation transfer into the internal multi-density EPS liner. ... 続きを読む",
        "modified": "2026-09-21T05:16:47+05:30"
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    "specifications": {
        "brand": "N/A",
        "helmet_family": "OF-77",
        "material": "N/A",
        "weight_g": 1200,
        "weight_lbs": "2.65",
        "homologation_standard": "DOT FMVSS 218",
        "sharp_rating": "",
        "rotational_tech": "None",
        "strap_type": "Double D-Ring",
        "noise_db_at_100kph": 95,
        "comms_ready": "Generic Speaker Cutouts",
        "head_shape": "Intermediate Oval"
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    "compatible_motorcycles": [],
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