{"product_id":"k-n-engine-air-filter-high-flow-premium-powersport-filter-for-suzuki-drz400s-sm-e-and-klx400r-sr-2000-2019-su-4000","title":"K\u0026N Engine Air Filter – High-Flow Premium Powersport Filter for Suzuki DRZ400S\/SM\/E and KLX400R\/SR (2000-2019) SU-4000","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe K\u0026amp;N Engine Air Filter SU-4000 is engineered for riders who want an easy upgrade that enhances the way their bike breathes. Specifically designed to fit the factory air box, this high-flow filter is built for 2000–2019 Suzuki DRZ400S\/SM\/E and 2003 Kawasaki KLX400R\/SR models, making installation straightforward and rewarding. It’s a washable, reusable alternative to disposable filters, and it comes backed by K\u0026amp;N’s renowned warranty that travels with the vehicle.\u003c\/p\u003e\n\u003ch3\u003eWhat makes this filter stand out\u003c\/h3\u003e\n\u003cp\u003eWith state-of-the-art filter media, the design aims to maintain a robust air path while filtering dust and debris. Riders may notice more responsive throttle feel and steadier power delivery as the engine breathes easier under load—from optimistic highway accelerations to technical trail climbs. This isn’t a promise of dramatic changes, but a potential improvement you can experience with regular maintenance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eULTIMATE LONGEVITY: 10-Year\/Million Mile Limited Warranty protects for the life of your vehicle\u003c\/li\u003e\n  \u003cli\u003eENGINEERED POWER: State-of-the-art air filter media is designed to increase horsepower and acceleration as well as improve overall engine performance\u003c\/li\u003e\n  \u003cli\u003eEASY INSTALLATION: Pre-oiled and ready to install. One of the easiest and most cost-effective upgrades for your motorcycle or ATV for quick performance gains\u003c\/li\u003e\n  \u003cli\u003eSAVES MONEY: K\u0026amp;N high-flow replacement air filters will save you $250 over 10 years by avoiding disposable filters\u003c\/li\u003e\n  \u003cli\u003eECO-FRIENDLY: Using a washable, reusable product helps reduce replacement waste. A K\u0026amp;N filter will last longer than 10 disposable filters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFit, installation, and real-world use\u003c\/h3\u003e\n\u003cp\u003eDesigned for a snug, factory-fit experience, the SU-4000 drops into your stock air box with minimal tools and fuss. It arrives pre-oiled, enabling a quick, clean swap that’s ideal for weekend wrenchers and seasoned riders alike. Whether you ride through dusty backroads, ride-ready urban commutes, or weekend trails, the filter is built to stand up to heat, dust, and regular maintenance cycles, keeping intake airflow consistent when you need it most.\u003c\/p\u003e\n\u003ch3\u003eWhy choose K\u0026amp;N for your powersport machine\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eLong-lasting filtration you can clean and reuse, reducing waste and replacement costs\u003c\/li\u003e\n  \u003cli\u003eProven performance tested on tough tracks, with a focus on real-world riding scenarios\u003c\/li\u003e\n  \u003cli\u003eA budget-friendly upgrade that complements stock components and factory boxes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eEnvironment and durability\u003c\/h3\u003e\n\u003cp\u003eBeyond performance, the filter emphasizes sustainability through a washable design and a warranty that accompanies the vehicle. With thoughtful material choices and a straightforward maintenance routine, it’s a practical upgrade for riders who value reliability and efficiency on the road or trail.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What vehicles does the K\u0026amp;N SU-4000 air filter fit?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Fits 2000–2019 Suzuki DRZ400S\/SM\/E and 2003 Kawasaki KLX400R\/SR; verify your model year and air box compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Why choose a reusable air filter over disposable ones?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: K\u0026amp;N filters are washable and reusable, reducing waste and saving money; backed by a 10-Year\/Million Mile warranty.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"K\u0026N","offers":[{"title":"Default Title","offer_id":42470922944597,"sku":"B000E28JLG","price":73.03,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/kn-engine-air-filter-high-flow.jpg?v=1778156438","url":"https:\/\/plentytorque.co.uk\/products\/k-n-engine-air-filter-high-flow-premium-powersport-filter-for-suzuki-drz400s-sm-e-and-klx400r-sr-2000-2019-su-4000","provider":"PlentyTorque","version":"1.0","type":"link"}