{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2c7c0abc68cf","name":"Factory 4.1 RCT Exhaust Silencer 16-18 Kawasaki KX 450 F - FMF 042330","sku":"06-1781.FMF.FAC","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":564.92,"formatted":"£564.92"},"summary":"FMF Racing Factory 4.1 RCT Stainless SL Slip-On exhaust with carbon end cap. Features Resonance Chamber Technology for optimised exhaust flow and greater power. Innovative Factory Forward Engineering positions the muffler closer to the engine for centralised mass and improved handling. Aerospace-grade construction and streamlined length offer increased durability and significant weight reduction. Meticulously manufactured in Southern California. Internal and external Resonance Chamber Technology for enhanced power delivery. Constructed from aerospace-grade aluminium, stainless steel, and proprietary titanium blend. Factory Forward Engineering for better mass centralisation. Shorter, stronger design reduces susceptibility to crash damage. Significant weight savings for agile handling. Rapid Tuning System (RTS) for quick adjustments. Carbon fibre end cap for premium finish and durability. Closed course use only. Includes spark arrestor (screen insert) and 94dB quiet insert. Proudly made in the USA. Item ID: 042330. Type: Slip-on. Configuration: Single. Construction: Aluminium muffler with stainless steel midpipe and carbon end cap. Finish: Natural. Included: Spark arrestor (screen insert), 94dB quiet insert. Weight: 5.1 lbs (2.3 kg). Not for road use (closed course only).","attributes":[{"label":"General Product Group","value":"Exhaust Systems & Parts"},{"label":"General Product Type","value":"Silencer"},{"label":"Variant Id","value":"209391"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1781_2EFMF_2EFAC/235da2f5c1971065.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1781_2EFMF_2EFAC/235da2f5c1971065.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1781_2EFMF_2EFAC/714032c6c8358afe.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1781_2EFMF_2EFAC/8831d765360ff80f.jpg"],"description":"FMF Racing Factory 4.1 RCT Stainless SL Slip-On exhaust with carbon end cap. Features Resonance Chamber Technology for optimised exhaust flow and greater power. Innovative Factory Forward Engineering positions the muffler closer to the engine for centralised mass and improved handling. Aerospace-grade construction and streamlined length offer increased durability and significant weight reduction. Meticulously manufactured in Southern California. Internal and external Resonance Chamber Technology for enhanced power delivery. Constructed from aerospace-grade aluminium, stainless steel, and proprietary titanium blend. Factory Forward Engineering for better mass centralisation. Shorter, stronger design reduces susceptibility to crash damage. Significant weight savings for agile handling. Rapid Tuning System (RTS) for quick adjustments. Carbon fibre end cap for premium finish and durability. Closed course use only. Includes spark arrestor (screen insert) and 94dB quiet insert. Proudly made in the USA. Item ID: 042330. Type: Slip-on. Configuration: Single. Construction: Aluminium muffler with stainless steel midpipe and carbon end cap. Finish: Natural. Included: Spark arrestor (screen insert), 94dB quiet insert. Weight: 5.1 lbs (2.3 kg). Not for road use (closed course only).","descriptionMarkdown":"### FMF Racing Factory 4.1 RCT Stainless SL Slip-On Exhaust System\n\nEngineered for race-focused riders, the FMF Racing Factory 4.1 RCT Stainless SL Slip-On exhaust with carbon end cap features advanced Resonance Chamber Technology™ to optimise exhaust flow for greater power across the rev range. Its innovative Factory Forward Engineering positions the muffler closer to the engine for centralised mass and improved handling, while the aerospace-grade construction and streamlined length offer increased durability and significant weight reduction. Meticulously manufactured in Southern California, this slip-on achieves the perfect blend of strength, performance, and modern design for competitive environments.\n\n#### Key Features\n\n- Incorporates internal and external Resonance Chamber Technology™ for enhanced power delivery\n\n- Constructed from aerospace-grade aluminium, stainless steel, and proprietary titanium blend\n\n- Factory Forward Engineering for better mass centralisation\n\n- Shorter, stronger design reduces susceptibility to crash damage\n\n- Significant weight savings for agile handling\n\n- Rapid Tuning System (RTS) for quick adjustments\n\n- Carbon fibre end cap for premium finish and durability\n\n- Includes spark arrestor (screen insert) and 94dB quiet insert\n\n- Proudly made in the USA\n\n#### Specifications\n\n- Type: Slip-on\n\n- Configuration: Single\n\n- Construction: Aluminium muffler with stainless steel midpipe and carbon end cap\n\n- Finish: Natural\n\n- Included: Spark arrestor (screen insert), 94dB quiet insert\n\n- Weight: 5.1 lbs (2.3 kg)\n\n- Not for road use (closed course only)","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2016–2018"}],"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-16-18-kawasaki-kx-450-f-fmf-042330","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2c7c0abc68cf:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2c7c0abc68cf: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."]}}