{"product_id":"end-of-line-factory-4-1-rct-exhaust-silencer-14-18-yamaha-wr-yz-450-f-fx-fmf-044406","title":"END OF LINE Factory 4.1 RCT Exhaust Silencer 14-18 Yamaha WR YZ 450 F FX - FMF 044406","description":"\u003cbody\u003e\r\n  \r\n\u003cp\u003eThe FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap is engineered for discerning riders, featuring advanced FMF Resonance Chamber Technology™ to enhance power and centralise mass. This slip-on exhaust, crafted from aerospace-grade materials, offers substantial power and weight advantages, a short profile to reduce crash vulnerability, and FMF’s innovative Factory Forward Engineering. Built with a natural aluminium muffler, stainless steel mid-pipe, and striking carbon end cap, the Factory 4.1 RCT is designed and manufactured in Southern California to exacting standards.\u003c\/p\u003e\r\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e  \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eClosed course use only  \u003c\/li\u003e\r\n\u003cli\u003eAdvanced FMF Resonance Chamber Technology™  \u003c\/li\u003e\r\n\u003cli\u003eCompact design helps avoid crash damage  \u003c\/li\u003e\r\n\u003cli\u003eNatural aluminium muffler with carbon fibre end cap  \u003c\/li\u003e\r\n\u003cli\u003eAerospace-grade construction for high durability  \u003c\/li\u003e\r\n\u003cli\u003eSignificant power increase across the RPM range  \u003c\/li\u003e\r\n\u003cli\u003eSubstantial weight savings  \u003c\/li\u003e\r\n\u003cli\u003eIncludes Rapid Tuning System (RTS) for easy adjustments  \u003c\/li\u003e\r\n\u003cli\u003eSpark arrestor screen insert included  \u003c\/li\u003e\r\n\u003cli\u003eQuiet insert available separately (not included)  \u003c\/li\u003e\r\n\u003cli\u003eManufactured exclusively in FMF’s Southern California factory  \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e  \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eType: Slip-On  \u003c\/li\u003e\r\n\u003cli\u003eConfiguration: Single  \u003c\/li\u003e\r\n\u003cli\u003eConstruction: Aluminium  \u003c\/li\u003e\r\n\u003cli\u003eFinish: Natural  \u003c\/li\u003e\r\n\u003cli\u003eMidpipe: Stainless Steel  \u003c\/li\u003e\r\n\u003cli\u003eEndcap: Carbon  \u003c\/li\u003e\r\n\u003cli\u003eSpark Arrestor: Screen insert (included)  \u003c\/li\u003e\r\n\u003cli\u003eWeight: 5.2 lbs  \u003c\/li\u003e\r\n\u003cli\u003eItem ID: 044406  \u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\r\n\u003cp\u003eYamaha  \u003c\/p\u003e\r\n\u003cul\u003e\r\n\u003cli\u003eWR450F (2016–2018)  \u003c\/li\u003e\r\n\u003cli\u003eYZ450F (2014–2017)  \u003c\/li\u003e\r\n\u003cli\u003eYZ450FX (2016–2018)\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n  \r\n\u003cdiv style=\"margin-top:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eFDY Performance – Engineered for riders who demand more.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAt FDY Performance, we deliver precision-engineered motorcycle parts trusted by riders across the UK and beyond. Every component is tested for reliability, durability, and peak performance so you can ride harder, longer, and with confidence.\u003c\/p\u003e\n\u003cp\u003eWe’re not just a brand — we’re a movement built by riders, for riders. Whether you’re chasing podiums, upgrading your build, or maintaining your machine, FDY Performance keeps you on the road and at the top of your game.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e📞 07765534854 | ✉️ fdy@fdyperformance.com | 🌐 www.fdyperformance.com\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size:13px; color:#555;\"\u003eFollow FDY Performance for new releases, expert tuning tips, and exclusive upgrades.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/body\u003e","brand":"FDY Performance","offers":[{"title":"Default","offer_id":55987300761948,"sku":"06-1970.FMF.FAC","price":359.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/6982\/0252\/files\/stock8260_1.jpg?v=1763314413","url":"https:\/\/fdyperformance.com\/products\/end-of-line-factory-4-1-rct-exhaust-silencer-14-18-yamaha-wr-yz-450-f-fx-fmf-044406","provider":"FDY performance Ltd","version":"1.0","type":"link"}