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  "specs": {
    "Frame Weight": "6.20 kg (13.64 lbs) at size L",
    "Frame Material": "Toray T1100 and M40X carbon fiber",
    "Drivetrain": "Shimano Dura Ace Di2 (RD/R9250/FD/R9250/ST/R9270/BR/R9200)",
    "Wheelset": "Branta C50 ULR carbon rims with carbon spokes",
    "Crankset": "Branta carbon with integrated power meter",
    "Tires": "Michelin Pro 5 700x28c"
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    "Shadowbox frame design enhances speed, efficiency, and precision on the road",
    "Shimano Dura Ace Di2 drivetrain enables instant, precise shifting for competitive racing",
    "Branta C50 ULR carbon wheelset with carbon spokes provides exceptional stiffness and aerodynamic efficiency",
    "Integrated Apple Find My technology adds modern anti-theft security"
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  "description": "The lightest production road frame ever built.",
  "researched_at": "2026-11-08T09:17:06.136+00:00",
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        "id": "di2",
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        "text": "Shimano’s electronic shifting: a small motor moves the chain at the press of a button. Crisper shifts and no cable stretch; you charge it every few hundred miles, and it usually adds several hundred dollars."
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}