{"product_id":"factory-4-1-rct-muffler","title":"Factory 4.1 RCT Muffler","description":"The FMF Factory 4.1 RCT Muffler is engineered to deliver significant performance enhancements to your dirt bike. It utilizes FMF's advanced Resonance Chamber Technology, both internally and externally, to optimize exhaust flow and sound.\n\nConstructed from aerospace-grade materials meeting exacting specifications, this slip-on muffler features a durable stainless steel midpipe and a natural aluminum canister, capped with a carbon fiber end cap. It comes with a screen-type spark arrestor, essential for off-road riding, and meets AMA professional sound requirements. The FMF Factory 4.1 RCT is noted for providing massive power gains throughout the entire RPM range and offers substantial weight savings compared to stock systems.\n\nThis FMF muffler can be used with either an FMF header or the stock OEM header, offering flexibility in customization. It is important to note that this product is intended \"For Closed Course Competition Use Only\" and is \"Not Intended for Street Use.\" Included with the muffler are the stainless steel mid-pipe, the muffler itself, a spark arrestor, a spark arrestor ring, a muffler washing plug, and instructions. The unit has a listed weight of approximately 5 lbs.","brand":"FMF","offers":[{"title":"Default Title","offer_id":52688393470264,"sku":"041517","price":539.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0970\/4895\/3144\/files\/663174342.webp?v=1784889468","url":"https:\/\/store.motormia.co\/products\/factory-4-1-rct-muffler","provider":"MOTORMIA","version":"1.0","type":"link"}