{"product_id":"k-and-n-engineering-ru-4250-k-n-engineering-ru-4250-universal-high-flow-conical-air-filter","title":"K AND N ENGINEERING RU-4250 K\u0026N Engineering RU-4250 Universal High-Flow Conical Air Filter","description":"\u003cp\u003eImprove airflow to your engine with the K\u0026amp;N Engineering RU-4250 Universal High-Flow Air Filter. This reusable cotton filter features a conical design and clamp-on installation for applications requiring a compact, high-performance intake solution. Its red filter media and universal fit make it suitable for a wide range of custom intake systems, off-road vehicles, powersports applications, and other compatible setups.\u003cbr\u003eThe RU-4250 is designed to provide efficient air filtration while supporting increased airflow compared with restrictive standard paper filters. The reusable cotton construction can be cleaned and re-oiled as needed, helping extend service life and reduce replacement frequency when properly maintained. A durable flange provides a secure connection to compatible intake tubing, while the tapered shape helps optimize installation where space and airflow direction are important considerations.\u003cbr\u003eDesigned for straightforward installation, this K\u0026amp;N Engineering air filter attaches with a clamp-on connection and is sold individually. Verify the base diameter, top diameter, filter height, and flange diameter against your intake system before ordering to ensure proper clearance and fit. The RU-4250 is a practical choice for enthusiasts and builders seeking a reusable, high-flow air filter for a universal application.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eBrand: K\u0026amp;N Engineering\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePart Number: RU-4250\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFilter Type: High-flow conical air filter\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eInstallation: Clamp-on design for compatible intake systems\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFilter Media: Reusable cotton construction\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eColor: Red\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication: Universal\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDesign: Tapered conical shape\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eQuantity: Sold individually\u003c\/li\u003e\u003c\/ul\u003e","brand":"K AND N ENGINEERING","offers":[{"title":"Default Title","offer_id":49199919661278,"sku":"KNERU-4250","price":127.82,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0760\/7690\/8766\/files\/KNERU-4250.jpg?v=1791829380","url":"https:\/\/www.racingsupply.ca\/products\/k-and-n-engineering-ru-4250-k-n-engineering-ru-4250-universal-high-flow-conical-air-filter","provider":"Racing Supply Co.","version":"1.0","type":"link"}