{"product_id":"just1-j-gprf-racing-helmet-solid-matte-black-6130320201000","title":"Just1 J-GPRF Racing Helmet Solid Matte Black 6130320201000","description":"\u003cp\u003eThe Just1 J-GPRF in solid matte black is a full-face racing helmet that wears its intent on its surface — a clean, understated finish that lets engineering speak louder than graphics. Developed specifically for both road riding and competitive motorsport, the J-GPRF represents Just1's most advanced helmet to date, built around the proprietary S.D.C. (Sequential Density Construction) system for superior impact management.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eS.D.C. (Sequential Density Construction) — multi-density materials absorb both linear and rotational impact forces, directing energy away from the rider's head\u003c\/li\u003e\n\u003cli\u003eMulticomposit Fiber shell available across 4 shell sizes, paired with 4 EPP\/EPS liner sizes, for a precise and personalised fit at every head circumference\u003c\/li\u003e\n\u003cli\u003eJ.1.E.R. emergency cheek-pad removal system for first-responder access without compromising the rider\u003c\/li\u003e\n\u003cli\u003ePROTX2 antimicrobial technology throughout the interior lining, keeping the helmet fresh on long riding days\u003c\/li\u003e\n\u003cli\u003e11-port ventilation system with 5 intakes and 6 exhaust vents, plus an integrated, vented chin guard with EPS lining\u003c\/li\u003e\n\u003cli\u003ePinlock-ready anti-fog visor included as standard, alongside a tinted visor for variable light conditions\u003c\/li\u003e\n\u003cli\u003eHydration system compatible — internal camel bag preparation built in\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCraftsmanship and Finish\u003c\/h2\u003e\u003cp\u003eThe matte black finish on the J-GPRF is not an afterthought — it is a deliberate design statement rooted in Just1's racing heritage. Where gloss finishes demand attention, the solid matte surface projects quiet confidence and translates directly to the track aesthetic that serious riders expect. The Multicomposit Fiber construction keeps the shell light without sacrificing structural integrity, and the four discrete shell sizes ensure the geometry remains correct regardless of the size you choose.\u003c\/p\u003e\u003cp\u003eInside, the fully removable and washable liner uses a retention net system to maintain its position under hard riding, while the double-D ring closure delivers the secure, competition-proven fastening that racing helmets require. The liner's PROTX2 antimicrobial treatment actively resists bacteria and odour over time — a meaningful advantage for riders who log serious mileage.\u003c\/p\u003e\u003ch2\u003eRoad and Track Performance\u003c\/h2\u003e\u003cp\u003eThe J-GPRF is certified to UNECE 22-06, the current European standard for motorcycle helmets, making it legal for road use across Europe while meeting the demands of track-day and racing environments. The ventilation architecture — five dedicated intake ports channelling air through the shell, six exhaust vents drawing it out — is designed to maintain airflow at pace, reducing fogging and heat build-up during sustained high-speed riding. The integrated, EPS-lined chin guard adds a further layer of protection at an area frequently compromised in lesser helmets.\u003c\/p\u003e\u003ch2\u003eFitment and Sizing\u003c\/h2\u003e\u003cp\u003eTo determine your correct size, wrap a soft tape measure approximately 1 cm above the ear, around the widest point of your head. Match the resulting measurement to the size guide below.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eXS — 53-54 cm\u003c\/li\u003e\n\u003cli\u003eS — 55-56 cm\u003c\/li\u003e\n\u003cli\u003eM — 57-58 cm\u003c\/li\u003e\n\u003cli\u003eL — 59-60 cm\u003c\/li\u003e\n\u003cli\u003eXL — 61-62 cm\u003c\/li\u003e\n\u003cli\u003eXXL — 63 cm\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart number: 6130320201000\u003c\/li\u003e\n\u003cli\u003eShell material: Multicomposit Fiber\u003c\/li\u003e\n\u003cli\u003eCertification: UNECE 22-06\u003c\/li\u003e\n\u003cli\u003eWeight: 1,600 g +\/- 50 g (size M)\u003c\/li\u003e\n\u003cli\u003eColour: solid black, matte finish\u003c\/li\u003e\n\u003cli\u003eClosure: double-D ring\u003c\/li\u003e\n\u003cli\u003eAnti-fog visor: yes (included)\u003c\/li\u003e\n\u003cli\u003eRemovable liner: yes\u003c\/li\u003e\n\u003cli\u003eHydration compatible: yes (camel bag preparation)\u003c\/li\u003e\n\u003cli\u003eVentilation: 5 intake \/ 6 exhaust ports\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Just1","offers":[{"title":"XS \/ Black","offer_id":53167796781322,"sku":"6130320201000-01","price":301.76,"currency_code":"EUR","in_stock":true},{"title":"S \/ Black","offer_id":53167796814090,"sku":"6130320201000-02","price":301.76,"currency_code":"EUR","in_stock":true},{"title":"M \/ Black","offer_id":53167796846858,"sku":"6130320201000-03","price":301.76,"currency_code":"EUR","in_stock":true},{"title":"L \/ Black","offer_id":53167796879626,"sku":"6130320201000-04","price":301.76,"currency_code":"EUR","in_stock":true},{"title":"XL \/ Black","offer_id":53167796912394,"sku":"6130320201000-05","price":301.76,"currency_code":"EUR","in_stock":true},{"title":"XXL \/ Black","offer_id":53167796945162,"sku":"6130320201000-06","price":301.76,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/50201105629450_tp.png?v=1785155446","url":"https:\/\/inter-pace.com\/en-sr\/products\/just1-j-gprf-racing-helmet-solid-matte-black-6130320201000","provider":"Inter-Pace","version":"1.0","type":"link"}