{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1d82d89c2b18","name":"Factory 4.1 RCT Exhaust Silencer 25-25 Kawasaki KX 250 F X - FMF 042411","sku":"07-4004.F41.A","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":635.5,"formatted":"£635.50"},"summary":"The FACTORY 4.1 RCT Stainless Slip-On with Carbon End Cap is designed for riders demanding top-tier performance. It leverages FMF's Resonance Chamber Technology™ for optimal power delivery. Its compact, forward-mounted design reduces crash susceptibility and centralises mass. Manufactured in Southern California from aerospace-grade materials, this slip-on provides substantial power gains across the RPM range and impressive weight savings. Features include FMF’s signature Resonance Chamber Technology™, a compact, crash-resistant design, aerospace-grade alloy and stainless steel construction, and a carbon end cap. The aluminium muffler has a grey anodised finish and includes a Rapid Tuning System (RTS). It comes with a 94dB quiet insert and a screen-type spark arrestor. Item ID: 042411. Type: Slip-On. Configuration: Single. Construction: Aluminium. Finish: Grey Anodised. Midpipe: Stainless Steel. Endcap: Carbon. Spark Arrestor: Screen insert (included). Quiet Insert: 94dB insert (included). Suitable exclusively for closed course use.","attributes":[],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4004_2EF41_2EA/3feac9c87581db57.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4004_2EF41_2EA/3feac9c87581db57.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4004_2EF41_2EA/3c24ffdd654b486b.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4004_2EF41_2EA/5aa1a0eadcc7a37d.jpg"],"description":"The FACTORY 4.1 RCT Stainless Slip-On with Carbon End Cap is designed for riders demanding top-tier performance. It leverages FMF's Resonance Chamber Technology™ for optimal power delivery. Its compact, forward-mounted design reduces crash susceptibility and centralises mass. Manufactured in Southern California from aerospace-grade materials, this slip-on provides substantial power gains across the RPM range and impressive weight savings. Features include FMF’s signature Resonance Chamber Technology™, a compact, crash-resistant design, aerospace-grade alloy and stainless steel construction, and a carbon end cap. The aluminium muffler has a grey anodised finish and includes a Rapid Tuning System (RTS). It comes with a 94dB quiet insert and a screen-type spark arrestor. Item ID: 042411. Type: Slip-On. Configuration: Single. Construction: Aluminium. Finish: Grey Anodised. Midpipe: Stainless Steel. Endcap: Carbon. Spark Arrestor: Screen insert (included). Quiet Insert: 94dB insert (included). Suitable exclusively for closed course use.","descriptionMarkdown":"### FMF Factory 4.1 RCT Exhaust Silencer - Carbon End Cap\n\nElevate your motorcycle's performance with the FMF Factory 4.1 RCT Stainless Slip-On. Engineered for riders who demand the best, this exhaust system utilizes FMF's cutting-edge Resonance Chamber Technology™ to unlock significant power gains across the entire RPM range. Its innovative compact and forward-mounted design not only reduces the risk of damage in the event of a crash but also centralizes mass for improved handling. Crafted entirely from aerospace-grade materials in Southern California, this slip-on offers exceptional durability and substantial weight savings, making it a superior choice for competitive racing and off-road enthusiasts.\n\n#### Key Features:\n\n \n- Designed for closed course competition use only.\n \n- Features FMF's proprietary Resonance Chamber Technology™ for enhanced performance.\n \n- Compact and robust construction minimizes susceptibility to impact damage.\n \n- Forward muffler positioning aids in mass centralization for better agility.\n \n- Constructed from premium aerospace-grade alloy and stainless steel for longevity.\n \n- Includes a lightweight and strong carbon fiber end cap.\n \n- Aluminium muffler body with a sleek grey anodised finish.\n \n- Equipped with the Rapid Tuning System (RTS) for efficient adjustments.\n \n- Delivers substantial power increases throughout the engine's operating range.\n \n- Comes with a 94dB quiet insert and a screen-type spark arrestor.\n\n#### Specifications:\n\n \n- Type: Slip-On\n \n- Configuration: Single Exhaust\n \n- Muffler Construction: Aluminium\n \n- Muffler Finish: Grey Anodised\n \n- Midpipe Material: Stainless Steel\n \n- End Cap Material: Carbon Fiber\n \n- Included Accessories: Screen-type spark arrestor and 94dB quiet insert.","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 250F","cc":null,"notes":null,"years":"2025"},{"make":"KAWASAKI","model":"KX 250X","cc":null,"notes":null,"years":"2025"}],"collections":[],"links":{"page":"https://www.2brosparts.com/products/factory-41-rct-exhaust-silencer-25-25-kawasaki-kx-250-f-x-fmf-042411","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1d82d89c2b18:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1d82d89c2b18:1"}},"market":{"country":"GB","countryName":"United Kingdom","locale":"en-gb","currency":"GBP","exchangeRateFromGbp":1,"pricesIncludeUkVat":true,"checkoutTax":null,"delivery":[{"name":"Standard","description":"Orders £15.00–£59.99 · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":4.99,"formatted":"£4.99"},"free":false,"minimumOrder":{"amount":0,"formatted":"£0.00","gbp":0},"weightGrams":null},{"name":"Standard","description":"Orders £60.00 and up · 2–4 business days","carrier":null,"estimatedDays":"2–4 business days","price":{"amount":0,"formatted":"£0.00"},"free":true,"minimumOrder":{"amount":60,"formatted":"£60.00","gbp":60},"weightGrams":null}],"storeUrl":"https://www.2brosparts.com"},"navigate":{"start":"https://www.2brosparts.com/api/agent","search":"https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus}"},"howToBuy":{"summary":"Build a basket for the shopper and give them one checkout link. 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Each product also has links.buyOneNow, a ready link for one unit.","stateless":"Nothing is saved on our side. The items part of the URL is the whole basket: to change it, write the link again with the new list.","itemsFormat":"basketKey:quantity pairs joined by commas, e.g. 04f24aad4d68:2,7c1e9a0b3f2d:1. Quantity defaults to 1. Up to 50 products, 100 each.","country":"GB is the shopper's delivery country. Swap it for theirs (US, DE, FR…) in any URL; currency, tax and delivery follow it.","tips":["Put everything the shopper wants in one link.","Optionally add your name as a last path segment on checkout links (…/checkout/GB/<items>/claude) so the sale is credited to you.","The checkout link is for the shopper's browser. Do not open it yourself.","Signed-in trade account holders see their trade prices at checkout."]}}