{"product_id":"fmf-q4-hex-s-a-slip-on-exhaust-muffler-045590-for-ktm-and-husqvarna","title":"FMF Q4 Hex S\/A Slip-On Exhaust Muffler 045590 for KTM and Husqvarna","description":"\u003cp\u003eThe FMF Q4 Hex S\/A Slip-On Exhaust Muffler, manufacturer part number 045590 and vendor part number 79-4193, is designed for select KTM and Husqvarna motocross and off-road motorcycles. This performance muffler uses internal baffles, chambers, and advanced sound-absorbing materials to improve exhaust flow while maintaining controlled sound output and minimizing power loss. Its slip-on design provides a practical upgrade for riders seeking dependable performance and trail-ready sound management.\u003c\/p\u003e\u003cp\u003eWith sound output typically well below 96 dB on compatible machines, the FMF Q4 Hex helps meet strict noise requirements in many riding environments. The integrated U.S. Forestry-approved spark arrestor uses a maintenance-free stainless steel screen to support responsible off-road riding and reduce the risk of expelled sparks. The durable construction is suited to the demands of motocross, cross-country, and recreational trail use.\u003c\/p\u003e\u003cp\u003eThis FMF exhaust muffler fits the 2015 KTM 250 SX-F Factory Edition, 2015 KTM 450 SX-F Factory Edition, 2016-2017 KTM 350 XC-F, 2016-2017 KTM 350 SX-F, 2016-2017 Husqvarna FC 250, and 2016-2017 Husqvarna FC 450. Verify the motorcycle model, year, exhaust configuration, and mounting points before installation to ensure proper fitment. The Q4 Hex S\/A Slip-On is intended as a model-specific replacement or performance upgrade for compatible applications.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePerformance Design: Internal baffles, chambers, and sound-absorbing materials help accelerate exhaust flow with reduced noise and minimal power loss.\u003c\/li\u003e\n\u003cli\u003eSound Control: Typically operates well below 96 dB on most compatible machines to help satisfy strict sound requirements.\u003c\/li\u003e\n\u003cli\u003eSpark Arrestor: U.S. Forestry-approved spark arrestor with a maintenance-free stainless steel screen supports responsible off-road use.\u003c\/li\u003e\n\u003cli\u003eFitment: Fits select 2015-2017 KTM and Husqvarna models, including KTM 250 SX-F Factory Edition, KTM 450 SX-F Factory Edition, KTM 350 XC-F, KTM 350 SX-F, Husqvarna FC 250, and Husqvarna FC 450.\u003c\/li\u003e\n\u003cli\u003eIdentification: FMF brand, Q4 Hex S\/A Slip-On model, manufacturer part number 045590, and vendor part number 79-4193.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n2015 KTM 250 SX-F\u003cbr\u003e\n2015 KTM 250 SX-F Factory Edition\u003cbr\u003e\n2015 KTM 350 SX-F\u003cbr\u003e\n2015 KTM 450 SX-F\u003cbr\u003e\n2015 KTM 450 SX-F Factory Edition\u003cbr\u003e\n2016 Husqvarna FC 250\u003cbr\u003e\n2016 Husqvarna FC 350\u003cbr\u003e\n2016 Husqvarna FC 450\u003cbr\u003e\n2016 KTM 250 SX-F\u003cbr\u003e\n2016 KTM 250 XC-F\u003cbr\u003e\n2016 KTM 350 SX-F\u003cbr\u003e\n2016 KTM 350 XC-F\u003cbr\u003e\n2016 KTM 450 SX-F\u003cbr\u003e\n2016 KTM 450 XC-F\u003cbr\u003e\n2017 Husqvarna FC 250\u003cbr\u003e\n2017 Husqvarna FC 350\u003cbr\u003e\n2017 Husqvarna FC 450\u003cbr\u003e\n2017 Husqvarna FE 250\u003cbr\u003e\n2017 Husqvarna FE 350\u003cbr\u003e\n2017 Husqvarna FE 450\u003cbr\u003e\n2017 Husqvarna FE 501\u003cbr\u003e\n2017 Husqvarna FX 350\u003cbr\u003e\n2017 Husqvarna FX 450\u003cbr\u003e\n2017 KTM 250 EXC-F\u003cbr\u003e\n2017 KTM 250 SX-F\u003cbr\u003e\n2017 KTM 250 XC-F\u003cbr\u003e\n2017 KTM 350 EXC-F\u003cbr\u003e\n2017 KTM 350 SX-F\u003cbr\u003e\n2017 KTM 350 XC-F\u003cbr\u003e\n2017 KTM 450 EXC-F\u003cbr\u003e\n2017 KTM 450 SX-F\u003cbr\u003e\n2017 KTM 450 XC-F\u003cbr\u003e\n2017 KTM 500 EXC-F\u003cbr\u003e\n2018 Husqvarna FC 250\u003cbr\u003e\n2018 Husqvarna FC 350\u003cbr\u003e\n2018 Husqvarna FC 450\u003cbr\u003e\n2018 Husqvarna FE 250\u003cbr\u003e\n2018 Husqvarna FE 350\u003cbr\u003e\n2018 Husqvarna FE 450\u003cbr\u003e\n2018 Husqvarna FE 501\u003cbr\u003e\n2018 Husqvarna FX 350\u003cbr\u003e\n2018 Husqvarna FX 450\u003cbr\u003e\n2018 KTM 250 EXC-F\u003cbr\u003e\n2018 KTM 250 SX-F\u003cbr\u003e\n2018 KTM 250 XC-F\u003cbr\u003e\n2018 KTM 350 EXC-F\u003cbr\u003e\n2018 KTM 350 SX-F\u003cbr\u003e\n2018 KTM 350 XC-F\u003cbr\u003e\n2018 KTM 450 EXC-F\u003cbr\u003e\n2018 KTM 450 SX-F\u003cbr\u003e\n2018 KTM 450 XC-F\u003cbr\u003e\n2018 KTM 500 EXC-F\u003cbr\u003e\n2019 Husqvarna FE 250\u003cbr\u003e\n2019 Husqvarna FE 350\u003cbr\u003e\n2019 Husqvarna FE 450\u003cbr\u003e\n2019 Husqvarna FE 501\u003cbr\u003e\n2019 KTM 250 EXC-F\u003cbr\u003e\n2019 KTM 350 EXC-F\u003cbr\u003e\n2019 KTM 450 EXC-F\u003cbr\u003e\n2019 KTM 500 EXC-F","brand":"FMF","offers":[{"title":"Default Title","offer_id":67551834046699,"sku":"79-4193","price":423.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0611\/3882\/9547\/files\/f6c1-572a8b6167c79.jpg?v=1790728558","url":"https:\/\/ctracingservices.com\/products\/fmf-q4-hex-s-a-slip-on-exhaust-muffler-045590-for-ktm-and-husqvarna","provider":"Cascade Tire \u0026 Racing Services","version":"1.0","type":"link"}