{"product_id":"arrow-71765mi","title":"Arrow Stainless Steel Header KTM RC 390 (2022-2025) 71765MI","description":"\u003cp\u003eEngineered exclusively for track and competition use, the Arrow 71765MI stainless steel header transforms the exhaust flow of the KTM RC 390 (2022–2025), delivering sharper throttle response and measurable power gains from the moment the engine comes on cam. This is the upgrade that takes a nimble single from street-ready to race-ready.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRace-developed stainless steel construction for outstanding heat resistance and long-term durability under sustained high-load running\u003c\/li\u003e\n\u003cli\u003eOptimised tube geometry engineered to improve throttle response and overall power output on the KTM RC 390\u003c\/li\u003e\n\u003cli\u003eWeighs just 1.27 kg, contributing directly to a reduced unsprung mass and improved handling balance\u003c\/li\u003e\n\u003cli\u003eCompatible with both the original KTM slip-on silencer and the Arrow Slip-On 71957 — maximum flexibility for your build\u003c\/li\u003e\n\u003cli\u003ePurpose-built for race use: free from road-use compromises that limit aftermarket performance headers\u003c\/li\u003e\n\u003cli\u003eECU remapping recommended to unlock the full performance potential and ensure long-term reliability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTrack Performance\u003c\/h2\u003e\u003cp\u003eThe 71765MI header is a core component for any serious KTM RC 390 race build. Arrow's engineering team developed the pipe to extract peak performance from the 373 cc single-cylinder engine, prioritising mid-range sharpness and top-end flow. The result is a header that responds immediately to throttle inputs — exactly what a rider needs when braking late and picking up the drive hard out of a corner.\u003c\/p\u003e\u003cp\u003eThe stainless steel construction handles the repeated thermal cycling of track sessions without distortion or degradation, cycle after cycle. Paired with the Arrow Slip-On 71957, the entire exhaust system is fully matched and tuned as a unit, maximising the gains available from the combination.\u003c\/p\u003e\u003ch2\u003eInstallation \u0026amp; Mapping\u003c\/h2\u003e\u003cp\u003eFitting the 71765MI is a direct replacement of the OEM header. Arrow strongly recommends a dedicated ECU mapping session following installation — a custom map tailored to this header will unlock the full power and throttle response improvements while protecting the engine under racing conditions.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eThis header fits the following motorcycle:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eKTM RC 390 — model years 2022, 2023, 2024, 2025\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eCompatible silencer options:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eOriginal KTM slip-on silencer\u003c\/li\u003e\n\u003cli\u003eArrow Slip-On, part number 71957\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eImportant Notice\u003c\/h2\u003e\u003cp\u003eRace use only. This header does not carry road-use type approval and must not be used on public roads. It is intended solely for closed competition and track day use.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003ePart Number: 71765MI\u003c\/li\u003e\n\u003cli\u003eBrand: Arrow\u003c\/li\u003e\n\u003cli\u003eMaterial: Stainless steel\u003c\/li\u003e\n\u003cli\u003eWeight: 1.27 kg\u003c\/li\u003e\n\u003cli\u003eFitment: KTM RC 390 (2022–2025)\u003c\/li\u003e\n\u003cli\u003eCompatible silencers: OEM KTM slip-on \/ Arrow Slip-On 71957\u003c\/li\u003e\n\u003cli\u003eUse: Race use only — no road approval\u003c\/li\u003e\n\u003cli\u003eECU remapping: Recommended\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Arrow","offers":[{"title":"Default Title","offer_id":53168798499082,"sku":"71765MI","price":26700.0,"currency_code":"MKD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/71765MI.png?v=1780815718","url":"https:\/\/inter-pace.com\/en-mk\/products\/arrow-71765mi","provider":"Inter-Pace","version":"1.0","type":"link"}