{"product_id":"bmc-fm856-04","title":"BMC Drop-In Air Filter Yamaha YZF-R1\/M RN32, RN49 \u0026 RN65 (2015-2026) FM856\/04","description":"\u003cp\u003eBorn from circuit engineering and refined for the relentless demands of the Yamaha YZF-R1 and R1M, the BMC FM856\/04 replacement air filter delivers measurable gains in airflow and filtration efficiency without a single compromise on engine protection. Designed to slot directly into RN32, RN49 and RN65 chassis from 2015 through 2026, this is the upgrade that separates a race-focused build from a standard service replacement.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFour-layer cotton gauze construction draws on BMC's motorsport heritage to maximise airflow while maintaining exceptional filtration across the full rev range.\u003c\/li\u003e\n\u003cli\u003eLow-tack specialist oil treatment allows high air permeability and superior particle absorption simultaneously — no trade-off between performance and engine protection.\u003c\/li\u003e\n\u003cli\u003eEpoxy-treated aluminium mesh surround resists petrol vapour and oxidation, preserving filter integrity through hard track sessions and extended road use alike.\u003c\/li\u003e\n\u003cli\u003eRubber frame eliminates the risk of cracking and ensures a consistent, rattle-free seal in the airbox every time.\u003c\/li\u003e\n\u003cli\u003eWashable and reusable design cuts long-term running costs and reduces waste — simply clean, re-oil and refit.\u003c\/li\u003e\n\u003cli\u003eTested to international standards for quality and performance, giving confidence for both road homologation and track-day use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTrack-Developed Airflow Technology\u003c\/h2\u003e\u003cp\u003eBMC's four-layer cotton gauze is engineered to minimise pressure drop across the filter medium. On a high-revving inline-four like the YZF-R1's crossplane-crank engine, reduced intake restriction translates directly into sharper throttle response and a more linear power delivery — qualities that matter whether you are chasing lap times at a circuit or threading through fast road bends. The optimised airflow path keeps pressure loss to a minimum without allowing harmful contaminants to reach the engine internals.\u003c\/p\u003e\u003ch2\u003eBuilt to Last, Not to Replace\u003c\/h2\u003e\u003cp\u003eWhere a standard paper element is discarded after a single service interval, the FM856\/04 is engineered for repeated use. The epoxy-finished aluminium mesh holds its shape and its resistance to petrol vapour season after season. The rubber frame prevents the micro-fractures that can develop in paper or foam elements under vibration, ensuring the seal against the airbox housing remains perfect. Cleaning and re-oiling the filter restores full performance, making this a long-term investment that pays for itself over consecutive service intervals.\u003c\/p\u003e\u003ch2\u003eFitment \u0026amp; Compatibility\u003c\/h2\u003e\u003cp\u003eThe BMC FM856\/04 is a direct drop-in replacement air filter for the following Yamaha models:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eYamaha YZF-R1 RN32 (2015-2016)\u003c\/li\u003e\n\u003cli\u003eYamaha YZF-R1M RN32 (2015-2016)\u003c\/li\u003e\n\u003cli\u003eYamaha YZF-R1 RN49 (2017-2019)\u003c\/li\u003e\n\u003cli\u003eYamaha YZF-R1M RN49 (2017-2019)\u003c\/li\u003e\n\u003cli\u003eYamaha YZF-R1 RN65 (2020-2026)\u003c\/li\u003e\n\u003cli\u003eYamaha YZF-R1M RN65 (2020-2026)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eNo modifications to the airbox or intake system are required. The filter installs using the original fixings and housing.\u003c\/p\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: BMC\u003c\/li\u003e\n\u003cli\u003ePart Number: FM856\/04\u003c\/li\u003e\n\u003cli\u003eType: Drop-in replacement air filter\u003c\/li\u003e\n\u003cli\u003eFilter Medium: Four-layer oiled cotton gauze\u003c\/li\u003e\n\u003cli\u003eFrame Material: Rubber\u003c\/li\u003e\n\u003cli\u003eMesh Material: Epoxy-treated aluminium\u003c\/li\u003e\n\u003cli\u003eFitment: Yamaha YZF-R1 \/ YZF-R1M, chassis codes RN32, RN49, RN65 (2015-2026)\u003c\/li\u003e\n\u003cli\u003eMaintenance: Washable and reusable\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"BMC","offers":[{"title":"Default Title","offer_id":53168724410634,"sku":"FM856\/04","price":78.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0949\/7831\/0410\/files\/FM856.png?v=1780812635","url":"https:\/\/inter-pace.com\/zh\/products\/bmc-fm856-04","provider":"Inter-Pace","version":"1.0","type":"link"}