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    "generated_at": "2026-11-11T06:51:32+00:00",
    "post_type": "helmet",
    "metadata": {
        "id": 131513,
        "title": "Biltwell Bonanza Anthracite",
        "slug": "biltwell-bonanza-anthracite",
        "url": "https://helmetsan.com/ja/helmets/biltwell-bonanza-anthracite/",
        "language": "ja",
        "brand": "",
        "category": "Open Face",
        "featured_image": "",
        "excerpt": "手描きグラフィックのオプションを用意した、究極にミニマルなオープンフェイスヘルメット。 The Biltwell Bonanza Anthracite is engineered as a high-integrity Full Face protective system by Biltwell, utilizing a structural shell constructed from ABS. 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. Certified ... 続きを読む",
        "modified": "2026-09-21T05:39:13+05:30"
    },
    "identifiers": {
        "sku": "BIL-BONA-GRE",
        "ean13": "8429610000000",
        "mpn": "BON-ANTH",
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                "asin": "B07Q5K3V8L",
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    "specifications": {
        "brand": "N/A",
        "helmet_family": "Bonanza",
        "material": "N/A",
        "weight_g": 1000,
        "weight_lbs": "2.2",
        "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"
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    "compatible_motorcycles": [],
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