{"product_id":"pirelli-mt-21-rallycross-90-90-21-54r-front-tire-3990400","title":"PIRELLI MT 21 Rallycross 90\/90-21 54R Front Tire 3990400","description":"Tire - MT 21™ Rallycross - Front - 90\/90-21 - 54R\n\u003cp\u003eThe PIRELLI MT 21 Rallycross front tire, model MT 21 Rallycross, is designed mainly for off-road use and delivers excellent performance over long distances. Its dual-sport configuration is rated for 90% off-road and 10% on-road use, making it suited to riders who prioritize off-road capability while retaining limited on-road functionality.\u003c\/p\u003e\u003cp\u003eThis front tire is identified by manufacturer part number 3990400 and vendor part number 3990400. The tire size is 90\/90-21, with a 54R designation. As a dual-sport tire, the PIRELLI MT 21 Rallycross is intended for compatible motorcycles requiring this front tire size and application. Verify vehicle fitment and manufacturer recommendations before installation.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eBrand: PIRELLI\u003c\/li\u003e\n\u003cli\u003eModel: MT 21 Rallycross\u003c\/li\u003e\n\u003cli\u003eApplication: Front tire\u003c\/li\u003e\n\u003cli\u003eSize: 90\/90-21\u003c\/li\u003e\n\u003cli\u003eLoad and speed designation: 54R\u003c\/li\u003e\n\u003cli\u003eUse distribution: 90% off-road and 10% on-road\u003c\/li\u003e\n\u003cli\u003ePerformance: Designed mainly for off-road use and extended-distance riding\u003c\/li\u003e\n\u003cli\u003eManufacturer part number: 3990400\u003c\/li\u003e\n\u003cli\u003eVendor part number: 3990400\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"PIRELLI","offers":[{"title":"Default Title","offer_id":68232842674411,"sku":"03160497","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/2496713.png?v=1792704520","url":"https:\/\/ctracingservices.com\/products\/pirelli-mt-21-rallycross-90-90-21-54r-front-tire-3990400","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}