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    "generated_at": "2026-11-10T23:37:55+00:00",
    "post_type": "helmet",
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        "id": 126714,
        "title": "Marushin Speedster Black",
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        "language": "ja",
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        "category": "Open Face",
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        "excerpt": "都市部やクルーザーでの使用に適した、現代の認証規格に対応したクラシックなオープンフェイスヘルメット。 The Marushin Speedster Black is engineered as a high-integrity Full Face protective system by Marushin, 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. Certified ... 続きを読む",
        "modified": "2026-09-21T03:21:10+05:30"
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    "specifications": {
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        "helmet_family": "Speedster",
        "material": "N/A",
        "weight_g": 920,
        "weight_lbs": "2.03",
        "homologation_standard": "N/A",
        "sharp_rating": "",
        "rotational_tech": "N/A",
        "strap_type": "Double D-Ring",
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        "comms_ready": "Generic Speaker Cutouts",
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