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    "generated_at": "2026-11-11T09:43:29+00:00",
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        "title": "GIVI X.21 Challenger Vortex Red",
        "slug": "givi-x-21-challenger-vortex-red",
        "url": "https://helmetsan.com/ja/helmets/givi-x-21-challenger-vortex-red/",
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        "category": "Modular",
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        "excerpt": "幅広いフリップアップ機構とマイクロラチェットバックルを備えたP/Jシステムヘルメット。 The GIVI X.21 Challenger Vortex Red is engineered as a high-integrity Full Face protective system by GIVI, utilizing a structural shell constructed from Composite. 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 ... 続きを読む",
        "modified": "2026-09-21T04:17:45+05:30"
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    "specifications": {
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        "helmet_family": "X.21 Challenger",
        "material": "N/A",
        "weight_g": 1700,
        "weight_lbs": "3.75",
        "homologation_standard": "N/A",
        "sharp_rating": "",
        "rotational_tech": "N/A",
        "strap_type": "Double D-Ring",
        "noise_db_at_100kph": 0,
        "comms_ready": "Generic Speaker Cutouts",
        "head_shape": "Intermediate Oval"
    },
    "variants": [],
    "compatible_motorcycles": [],
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