{
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    "@type": "Product",
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    "generated_at": "2026-11-11T07:43:07+00:00",
    "post_type": "helmet",
    "metadata": {
        "id": 124833,
        "title": "Studds Ninja D4 Grey",
        "slug": "studds-ninja-d4-grey",
        "url": "https://helmetsan.com/ja/helmets/studds-ninja-d4-grey/",
        "language": "ja",
        "brand": "",
        "category": "Open Face",
        "featured_image": "",
        "excerpt": "通勤に適した、フリップアップバイザー付きの軽量オープンフェイスヘルメット。 The Studds Ninja D4 Grey is engineered as a high-integrity Full Face protective system by Studds, 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. ... 続きを読む",
        "modified": "2026-09-21T02:45:30+05:30"
    },
    "identifiers": {
        "sku": "STU-NIN-GRE",
        "ean13": "",
        "mpn": "",
        "asin_us": "",
        "asin_status": "missing",
        "regions_covered": 22,
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    "specifications": {
        "brand": "N/A",
        "helmet_family": "Ninja D4",
        "material": "N/A",
        "weight_g": 960,
        "weight_lbs": "2.12",
        "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": [],
    "pricing": {
        "visitor_country": "US",
        "currency": "USD",
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        "offers": [
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                "marketplace": "amazon-us",
                "price": 0,
                "currency": "USD",
                "availability": "unknown"
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    "reviews": {
        "average_rating": 0,
        "review_count": 0,
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    "_tier": "bot"
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