{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"bc9cf62e52de","name":"Factory 4.1 RCT Exhaust Silencer 25-26 Honda CRF 250 R RX - FMF 041618","sku":"07-4007.F41.A","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":635.5,"formatted":"£635.50"},"summary":"Delivering massive performance gains across the RPM range, the FMF Factory 4.1 RCT Stainless Slip-On with Carbon End Cap uses advanced Resonance Chamber Technology and Factory Forward Engineering to move the muffler closer to the engine. This construction enhances mass centralisation and reduces susceptibility to crash damage thanks to a shorter overall length. Precision built from aerospace-grade materials and manufactured in Southern California, this slip-on provides significant weight savings, rapid tuning features, and a carbon end cap for ultimate strength and style. Features include FMF Resonance Chamber Technology for optimum power and sound, engineered for improved mass centralisation and reduced crash damage. Constructed from premium aerospace-grade aluminium and stainless steel, it has a lightweight design with carbon end cap for enhanced durability. Includes screen-type spark arrestor and 94dB quiet insert as standard. RTS Rapid Tuning System for easy adjustments. 100% made in the USA. For closed course use only. Specifications: Item ID 041618, Type Slip-On, Configuration Single. Muffler Construction Aluminium, natural finish, grey anodised. End Cap Carbon fibre. Midpipe Material Stainless steel. Spark Arrestor Screen insert included. Quiet Insert 94dB insert included. Carb Warning No. Intended Use Closed course.","attributes":[],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4007_2EF41_2EA/8fa4a2237ebb7b33.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4007_2EF41_2EA/8fa4a2237ebb7b33.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4007_2EF41_2EA/9f6c6700deffd28b.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/07-4007_2EF41_2EA/2c3ee15d7112edb9.jpg"],"description":"Delivering massive performance gains across the RPM range, the FMF Factory 4.1 RCT Stainless Slip-On with Carbon End Cap uses advanced Resonance Chamber Technology and Factory Forward Engineering to move the muffler closer to the engine. This construction enhances mass centralisation and reduces susceptibility to crash damage thanks to a shorter overall length. Precision built from aerospace-grade materials and manufactured in Southern California, this slip-on provides significant weight savings, rapid tuning features, and a carbon end cap for ultimate strength and style. Features include FMF Resonance Chamber Technology for optimum power and sound, engineered for improved mass centralisation and reduced crash damage. Constructed from premium aerospace-grade aluminium and stainless steel, it has a lightweight design with carbon end cap for enhanced durability. Includes screen-type spark arrestor and 94dB quiet insert as standard. RTS Rapid Tuning System for easy adjustments. 100% made in the USA. For closed course use only. Specifications: Item ID 041618, Type Slip-On, Configuration Single. Muffler Construction Aluminium, natural finish, grey anodised. End Cap Carbon fibre. Midpipe Material Stainless steel. Spark Arrestor Screen insert included. Quiet Insert 94dB insert included. Carb Warning No. Intended Use Closed course.","descriptionMarkdown":"### FMF Factory 4.1 RCT Exhaust Silencer with Carbon End Cap\n\nUnlock significant performance gains across the entire RPM range with the FMF Factory 4.1 RCT Stainless Slip-On. This exhaust system utilizes advanced Resonance Chamber Technology™ and Factory Forward Engineering to position the muffler closer to the engine. This design improves mass centralization, reduces susceptibility to crash damage due to its shorter length, and offers a substantial weight saving.\n\nPrecision crafted from aerospace-grade materials in the USA, this slip-on features a stylish and durable carbon fiber end cap, offering enhanced strength and aesthetics. It comes equipped with a screen-type spark arrestor and a 94dB quiet insert, making it suitable for various riding conditions, though it is intended for closed-course use only.\n\n**Key Features:**\n\n- Incorporates FMF Resonance Chamber Technology™ for optimized power and sound output.\n\n- Engineered for enhanced mass centralization and reduced risk of crash damage.\n\n- Constructed with premium aerospace-grade aluminum and stainless steel components.\n\n- Lightweight design featuring a carbon fiber end cap for superior durability and style.\n\n- Includes a screen-type spark arrestor and a 94dB quiet insert as standard equipment.\n\n- Features RTS (Rapid Tuning System) for straightforward adjustments.\n\n- Proudly 100% manufactured in the USA.\n\n- Intended for closed-course competition use only.\n\n**Specifications:**\n\n- Exhaust Type: Slip-On\n\n- Configuration: Single\n\n- Muffler Construction: Natural finish grey anodized aluminum.\n\n- End Cap Material: Carbon fiber.\n\n- Midpipe Material: Stainless steel.\n\n- Included Accessories: Screen insert spark arrestor and 94dB quiet insert.","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 250R","cc":null,"notes":null,"years":"2025–2026"},{"make":"HONDA","model":"CRF 250RX","cc":null,"notes":null,"years":"2025–2026"}],"collections":[],"links":{"page":"https://www.2brosparts.com/products/factory-41-rct-exhaust-silencer-25-26-honda-crf-250-r-rx-fmf-041618","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/bc9cf62e52de:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/bc9cf62e52de: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. Every URL is a plain path (no query string) and a GET. Nothing is stored between calls.","checkoutLinkFormat":"https://www.2brosparts.com/api/agent/checkout/GB/{basketKey}:{quantity},{basketKey}:{quantity}","steps":["1. Find products: follow links in these responses, or fetch https://www.2brosparts.com/api/agent/search/GB/{words+joined+with+plus} (e.g. https://www.2brosparts.com/api/agent/search/GB/brake+pads). Every product has a basketKey.","2. Optional check: https://www.2brosparts.com/api/agent/basket/GB/{basketKey}:{quantity},{basketKey}:{quantity} returns stock, totals per delivery option and the checkout link.","3. Give the shopper the checkout link. Opening it fills their basket with exactly these items (replacing what was there) and opens checkout for United Kingdom. They pay on 2brosparts.com through Stripe."],"noFetchNeeded":"You can write the checkout link yourself from basketKeys and quantities; nothing has to be fetched first. 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."]}}