{ "@context": "https://schema.org", "@type": "Product", "api_version": "2.0", "generated_at": "2026-11-11T11:05:44+00:00", "post_type": "helmet", "metadata": { "id": 99848, "title": "Ninja D4", "slug": "ninja-d4", "url": "https://helmetsan.com/fr/helmets/ninja-d4/", "language": "fr", "brand": "", "category": "Open Face", "featured_image": "", "excerpt": "Casque jet léger avec écran relevable, idéal pour les trajets quotidiens. Le Ninja D4 est conçu par Studds comme un système de protection haute intégrité de type casque jet, utilisant une coque structurelle en coque multi-composite haute absorption avec calotin EPS. Cette stratification assure une dissipation progressive de l’énergie cinétique lors des impacts, répartissant les ... Lire la suite", "modified": "2026-09-20T10:09:03+05:30" }, "identifiers": { "sku": "STU-STUDDS", "ean13": "8901234567890", "mpn": "D4", "asin_us": "B08X7Y2Z9A", "asin_status": "verified", "regions_covered": 22, "amazon": { "us": { "asin": "B08X7Y2Z9A", "status": "verified" } } }, "specifications": { "brand": "N/A", "helmet_family": "Ninja D4", "material": "N/A", "weight_g": 1124, "weight_lbs": "2.48", "homologation_standard": "ECE 22.06", "sharp_rating": "4", "rotational_tech": "1", "strap_type": "Double D-Ring", "noise_db_at_100kph": 92, "comms_ready": "Generic Speaker Cutouts", "head_shape": "Intermediate Oval" }, "variants": [ { "id": "studds_ninja_d4_matte-black", "entity": "helmet", "title": "Studds Ninja D4 Matte Black", "type": "Open Face", "parent_id": "studds_ninja_d4", "helmet_family": "Ninja D4", "head_shape": "Intermediate Oval", "color": "Matte Black", "color_family": "Black", "sku": "STU-NIN-BLK", "finish": "matte", "is_graphic": false, "availability": "instock", "description": "The Studds Ninja D4 is a benchmark Open Face helmet crafted in Global Certified. Built around Advanced multi-composite aerodynamic shell geometry engineered for optimal impact absorption and stability, it is engineered specifically for Intermediate Oval ergonomics. Optimized for urban commuters and retro cruisers, offering lightweight agility, wide peripheral vision, and step-through convenience. Certified safety and ergonomic comfort for everyday riding confidence.", "product_details": { "description": "Light open face with flip-up visor for daily commute." }, "price": { "current": 36.99, "usd": 36.99, "eur": 34.03, "gbp": 29.22 }, "specs": { "material": "ABS", "weight_g": 960, "weight_lbs": 2.12, "certifications": [ "DOT" ] }, "geo_media": [ "https://helmetsan.com/assets/helmets/studds_ninja_d4_matte_black_front.png", "https://helmetsan.com/assets/helmets/studds_ninja_d4_matte_black_side.png" ], "helmet_types": [ "Open Face" ], "introduction": "Positioned in Studds's Open Face lineup, the Ninja D4 brings Indian engineering to riders seeking balance between weight, cabin acoustics, and impact protection. Designed for an Intermediate Oval fitment, it connects daily usability with certified DOT, ECE 22.05 track safety.", "story": "The Studds Ninja D4 represents Indian head protection design, incorporates aerodynamic shell sculpting and multi-density EPS impact damping. Its ABS shell dampens high-speed wind resonance while multi-density EPS channels absorb kinetic energy across direct and oblique impact vectors.nnOn the road, intake ports channel cool air across the scalp, keeping cabin noise around 92.5 dB at 100 km/h. For riders seeking an ABS Open Face helmet tailored to an Intermediate Oval head shape, the Ninja D4 delivers verified safety and long-distance rider comfort.", "finish_profile": "Studds Ninja D4 Matte Black (matte finish) u2014 Treated with a mirror-finish deep gloss clearcoat that repels road grime and simplifies bug cleanup.", "editorial_note": "Studds Ninja D4 in Studds Ninja D4 Matte Black. The sweet spot for everyday street riders seeking lightweight comfort, crisp aerodynamics, and modern safety." }, { "id": "studds_ninja_d4_grey", "entity": "helmet", "title": "Studds Ninja D4 Grey", "type": "Open Face", "parent_id": "studds_ninja_d4", "helmet_family": "Ninja D4", "head_shape": "Intermediate Oval", "color": "Grey", "color_family": "Grey", "sku": "STU-NIN-GRE", "finish": "matte", "is_graphic": false, "availability": "instock", "description": "The Studds Ninja D4 is a benchmark Open Face helmet crafted in Global Certified. Built around Advanced multi-composite aerodynamic shell geometry engineered for optimal impact absorption and stability, it is engineered specifically for Intermediate Oval ergonomics. Optimized for urban commuters and retro cruisers, offering lightweight agility, wide peripheral vision, and step-through convenience. 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Its ABS shell dampens high-speed wind resonance while multi-density EPS channels absorb kinetic energy across direct and oblique impact vectors.nnOn the road, intake ports channel cool air across the scalp, keeping cabin noise around 92.5 dB at 100 km/h. For riders seeking an ABS Open Face helmet tailored to an Intermediate Oval head shape, the Ninja D4 delivers verified safety and long-distance rider comfort.", "finish_profile": "Studds Ninja D4 Grey (matte finish) u2014 Treated with a mirror-finish deep gloss clearcoat that repels road grime and simplifies bug cleanup.", "editorial_note": "Studds Ninja D4 in Studds Ninja D4 Grey. 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