{"product_id":"factory-4-1-rct-slip-on-exhaust-silencer-18-26-yamaha-450-wr-yz-f-fx-fmf-044443","title":"Factory 4.1 RCT Slip-On Exhaust Silencer 18-26 Yamaha 450 WR YZ F FX - FMF 044443","description":"\u003cp\u003eEngineered for serious performance, the FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap delivers cutting-edge power gains and significant weight savings for competitive riders. Utilising FMF Resonance Chamber Technology™ internally and externally, this slip-on muffler shortens overall length to reduce crash vulnerability and enhances mass centralisation, thereby improving handling. Crafted with aerospace-grade aluminium, stainless steel, and a carbon fibre end cap, each unit is manufactured entirely at FMF’s Southern California facility for uncompromising quality and reliability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAdvanced FMF Resonance Chamber Technology™ for improved exhaust efficiency and performance\u003c\/li\u003e\n\u003cli\u003eFactory Forward Engineering for centralised mass and better handling\u003c\/li\u003e\n\u003cli\u003eAerospace-grade natural aluminium construction with durable carbon fibre end cap\u003c\/li\u003e\n\u003cli\u003eSignificant power gains across the RPM spectrum\u003c\/li\u003e\n\u003cli\u003eNoticeably lighter than stock systems for enhanced agility\u003c\/li\u003e\n\u003cli\u003e94dB quiet insert and spark arrestor (screen type) included for versatility\u003c\/li\u003e\n\u003cli\u003eNew Rapid Tuning System (RTS) for quick adjustments\u003c\/li\u003e\n\u003cli\u003eClosed course use only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eItem ID: 044443\u003c\/li\u003e\n\u003cli\u003eType: Slip-On\u003c\/li\u003e\n\u003cli\u003eConfiguration: Single\u003c\/li\u003e\n\u003cli\u003eConstruction: Aluminium (muffler), Stainless Steel (midpipe), Carbon Fibre (end cap)\u003c\/li\u003e\n\u003cli\u003eFinish: Natural\u003c\/li\u003e\n\u003cli\u003eIncludes: Screen insert spark arrestor, 94dB quiet insert\u003c\/li\u003e\n\u003cli\u003eCarb Warning: No\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYAMAHA\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWR450F (2019–2024)\u003c\/li\u003e\n\u003cli\u003eYZ450F (2018–2026)\u003c\/li\u003e\n\u003cli\u003eYZ450FX (2019–2025)\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"FMF Exhausts","offers":[{"title":"Default Title","offer_id":63417737150794,"sku":"209409","price":614.53,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0897\/1249\/2874\/files\/factory-41-rct-slip-on-exhaust-silencer-18-26-yamaha-450-wr-yz-f-fx-fmf-044443-1979324.jpg?v=1788510790","url":"https:\/\/aceraceshop.co.uk\/products\/factory-4-1-rct-slip-on-exhaust-silencer-18-26-yamaha-450-wr-yz-f-fx-fmf-044443","provider":"ACE Race Shop","version":"1.0","type":"link"}