{"product_id":"arrow-71639mi","title":"Arrow Stainless Steel Header Yamaha YZF-R3 (2021-2026) 71639MI","description":"\u003cp\u003eEngineered exclusively for track and racing use, the Arrow 71639MI stainless steel header transforms the exhaust flow of the Yamaha YZF-R3 (2021-2026) for noticeably sharper throttle response and genuine performance gains where they matter most — on circuit.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRace-developed geometry optimised for improved throttle response and measurable power gains on the Yamaha YZF-R3\u003c\/li\u003e\n\u003cli\u003eConstructed from high-grade stainless steel for outstanding heat resistance and long-term durability under sustained racing conditions\u003c\/li\u003e\n\u003cli\u003eOutlet diameter of 45 mm matched precisely to the Arrow slip-on silencer range for a perfect seal and unrestricted flow\u003c\/li\u003e\n\u003cli\u003eWeighs just 1.92 kg, reducing unsprung and overall bike mass for improved handling and agility\u003c\/li\u003e\n\u003cli\u003eDesigned and manufactured by Arrow, one of motorsport's most respected exhaust specialists\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eBuild Quality \u0026amp; Performance\u003c\/h2\u003e\u003cp\u003eThe 71639MI header is built to withstand the thermal and mechanical demands of repeated track sessions. Stainless steel construction resists corrosion, handles extreme exhaust temperatures without distortion, and maintains its structural integrity across a full racing season. The precision-formed tube geometry is developed to maximise scavenging efficiency, delivering a broader, more responsive power curve compared to the standard header.\u003c\/p\u003e\u003cp\u003eTo extract the full benefit of the Arrow header and protect the engine management system, a dedicated ECU remap is strongly recommended following installation.\u003c\/p\u003e\u003ch2\u003eCompatibility \u0026amp; Important Notes\u003c\/h2\u003e\u003cp\u003eThis header is approved for race use only and carries no road homologation. It cannot be used with the original Yamaha slip-on silencer — a compatible Arrow slip-on from the 71831 series must be fitted to complete the exhaust system. Do not attempt to pair this header with any non-Arrow end can.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cul\u003e\u003cli\u003eYamaha YZF-R3, model years 2021, 2022, 2023, 2024, 2025, 2026\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003e71639MI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eArrow\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.92 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutlet diameter\u003c\/td\u003e\n\u003ctd\u003e45 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible silencer\u003c\/td\u003e\n\u003ctd\u003eArrow slip-on series 71831\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApproval\u003c\/td\u003e\n\u003ctd\u003eRace use only — not road legal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFitment\u003c\/td\u003e\n\u003ctd\u003eYamaha YZF-R3 (2021-2026)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e","brand":"Arrow","offers":[{"title":"Default Title","offer_id":53168802988298,"sku":"71639MI","price":418.88,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/71639MI.png?v=1780815848","url":"https:\/\/inter-pace.com\/de\/products\/arrow-71639mi","provider":"Inter-Pace","version":"1.0","type":"link"}