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    "generated_at": "2026-11-11T09:46:49+00:00",
    "post_type": "helmet",
    "metadata": {
        "id": 81230,
        "title": "RPHA 91 Silver Metallic",
        "slug": "rpha-91-silver-metallic",
        "url": "https://helmetsan.com/ja/helmets/rpha-91-silver-metallic/",
        "language": "ja",
        "brand": "",
        "category": "Modular",
        "featured_image": "",
        "excerpt": "P/J認証を取得した機能的なシステムヘルメット。 The RPHA 91 Silver Metallic is engineered as a high-integrity Full Face protective system by HJC, utilizing a structural shell constructed from PIM Evo. 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": "2026-09-19T18:08:53+05:30"
    },
    "identifiers": {
        "sku": "HJC-HJCRPH",
        "ean13": "4962100000000",
        "mpn": "RPHA-91-SILVER-METALLIC",
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    "specifications": {
        "brand": "N/A",
        "helmet_family": "RPHA 91",
        "material": "N/A",
        "weight_g": 1606,
        "weight_lbs": "3.54",
        "homologation_standard": "DOT, ECE 22.06",
        "sharp_rating": "4",
        "rotational_tech": "1",
        "strap_type": "Double D-Ring",
        "noise_db_at_100kph": 89,
        "comms_ready": "Generic Speaker Cutouts",
        "head_shape": "Intermediate Oval"
    },
    "variants": [],
    "compatible_motorcycles": [],
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