{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d1161c0be206","name":"Factory 4.1 RCT Exhaust Silencer 18-23 KTM Husqvarna GasGas 350 450 - FMF 045628","sku":"06-9907.F4","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":635.5,"formatted":"£635.50"},"summary":"The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap features FMF Resonance Chamber Technology for advanced performance. Its compact design and Factory Forward Engineering centralize mass by moving the muffler closer to the engine, improving handling. Constructed from aerospace-grade materials, this slip-on system provides significant power gains and weight savings. Features include a closed course use only specification, slip-on configuration, natural aluminium construction with a carbon end cap, and a stainless steel midpipe. It comes with a screen-type spark arrestor insert and a 94dB quiet insert. The system offers a substantial weight advantage at 7.4 lbs, a massive power increase across the RPM range, and RTS Rapid Tuning System for easy tuning. It boasts a robust, corrosion-resistant build and is exclusively manufactured from proprietary alloy-grade titanium and premium materials. Item ID is 045628, type is Slip-On, configuration is Single, construction is Aluminium, finish is Natural, midpipe is Stainless Steel, and endcap is Carbon. A screen insert spark arrestor and a 94dB quiet insert are included. Weight is 7.4 lbs.","attributes":[{"label":"General Product Group","value":"Exhaust Systems & Parts"},{"label":"General Product Type","value":"Silencer"},{"label":"Variant Id","value":"287708"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9907_2EF4/c2c20812a06606fa.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9907_2EF4/c2c20812a06606fa.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9907_2EF4/c1aa15940074d784.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9907_2EF4/38b3500bf29a9d8b.jpg"],"description":"The FMF Racing Factory 4.1 RCT Stainless Slip-On with Carbon End Cap features FMF Resonance Chamber Technology for advanced performance. Its compact design and Factory Forward Engineering centralize mass by moving the muffler closer to the engine, improving handling. Constructed from aerospace-grade materials, this slip-on system provides significant power gains and weight savings. Features include a closed course use only specification, slip-on configuration, natural aluminium construction with a carbon end cap, and a stainless steel midpipe. It comes with a screen-type spark arrestor insert and a 94dB quiet insert. The system offers a substantial weight advantage at 7.4 lbs, a massive power increase across the RPM range, and RTS Rapid Tuning System for easy tuning. It boasts a robust, corrosion-resistant build and is exclusively manufactured from proprietary alloy-grade titanium and premium materials. Item ID is 045628, type is Slip-On, configuration is Single, construction is Aluminium, finish is Natural, midpipe is Stainless Steel, and endcap is Carbon. A screen insert spark arrestor and a 94dB quiet insert are included. Weight is 7.4 lbs.","descriptionMarkdown":"### FMF Racing Factory 4.1 RCT Exhaust Silencer with Carbon End Cap\n\nExperience the pinnacle of exhaust technology with the FMF Racing Factory 4.1 RCT Stainless Slip-On. This system integrates FMF Resonance Chamber Technology™ internally and externally, delivering enhanced performance and sound. Its compact, crash-resistant design and Factory Forward Engineering reposition the muffler closer to the engine, improving mass centralization for superior handling.\n\n**Key Features:**\n\n- Closed course use only.\n\n- Slip-on configuration for easy installation.\n\n- Constructed from aerospace-grade aluminium with a striking carbon fiber end cap.\n\n- Durable stainless steel midpipe.\n\n- Includes a screen-type spark arrestor insert for compliance.\n\n- Comes with a 94dB quiet insert for reduced noise levels.\n\n- Offers a significant weight reduction, weighing only 7.4 lbs.\n\n- Provides a massive power increase across the entire RPM range.\n\n- Features RTS (Rapid Tuning System) for straightforward tuning adjustments.\n\n- Built for robustness and resistance to corrosion.\n\n- Manufactured exclusively from proprietary alloy-grade titanium and premium materials in Southern California.\n\n**Specifications:**\n\n- Type: Slip-On\n\n- Configuration: Single\n\n- Construction Material: Aluminium\n\n- Finish: Natural\n\n- Midpipe Material: Stainless Steel\n\n- End Cap Material: Carbon Fiber\n\n- Spark Arrestor: Screen insert (included)\n\n- Quiet Insert: 94dB insert (included)\n\n- Weight: 7.4 lbs","weightGrams":null,"fitments":[{"make":"GASGAS","model":"EX 250F","cc":null,"notes":null,"years":"2021–2023"},{"make":"GASGAS","model":"EX 350F","cc":null,"notes":null,"years":"2021–2023"},{"make":"GASGAS","model":"EX 450F","cc":null,"notes":null,"years":"2021–2023"},{"make":"GASGAS","model":"MC 250F","cc":null,"notes":null,"years":"2021–2023"},{"make":"GASGAS","model":"MC 350F","cc":null,"notes":null,"years":"2021–2023"},{"make":"GASGAS","model":"MC 450F","cc":null,"notes":null,"years":"2021–2023"},{"make":"HUSQVARNA","model":"FC 250","cc":null,"notes":null,"years":"2019–2022"},{"make":"HUSQVARNA","model":"FC 350","cc":null,"notes":null,"years":"2019–2022"},{"make":"HUSQVARNA","model":"FC 450","cc":null,"notes":null,"years":"2019–2022"},{"make":"HUSQVARNA","model":"FC 450 ROCKSTAR EDITION","cc":null,"notes":null,"years":"2018–2021"},{"make":"HUSQVARNA","model":"FX 350","cc":null,"notes":null,"years":"2019–2022"},{"make":"HUSQVARNA","model":"FX 450","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"250 SX-F","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"250 XC-F","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"350 SX-F","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"350 XC-F","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"350 XC-F KAILUB RUSSELL","cc":null,"notes":null,"years":"2021"},{"make":"KTM","model":"450 SX-F","cc":null,"notes":null,"years":"2019–2022"},{"make":"KTM","model":"450 SX-F FACTORY EDITION","cc":null,"notes":null,"years":"2018, 2020–2021"},{"make":"KTM","model":"450 XC-F","cc":null,"notes":null,"years":"2019–2022"}],"collections":[{"name":"Exhaust Systems & Parts","url":"https://www.2brosparts.com/api/agent/collection/GB/exhaust-systems-parts"},{"name":"Silencer","url":"https://www.2brosparts.com/api/agent/collection/GB/silencer"}],"links":{"page":"https://www.2brosparts.com/products/factory-41-rct-exhaust-silencer-18-23-ktm-husqvarna-gasgas-350-450-fmf-045628","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d1161c0be206:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d1161c0be206:1"}},"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."]}}