{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"562defbd411c","name":"Factory 4.1 RCT Exhaust Silencer 19-23 Kawasaki KX 450 F X - FMF 042371","sku":"06-9891.F4TA","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":706.07,"formatted":"£706.07"},"summary":"FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On with Carbon Cap. Designed for high-performance off-road and motocross competition, this slip-on muffler features a blue anodized titanium body and carbon end cap, engineered to centralize mass and deliver impressive horsepower gains across the RPM range. Aerospace-grade titanium and 100% American manufacturing ensure unmatched durability. Features include closed course use only, lightweight titanium construction with blue anodized finish, carbon fibre end cap for enhanced strength and aesthetics, significant power gain throughout the RPM range, Rapid Tuning System (RTS) for quick adjustments, shorter overall length for reduced crash susceptibility, muffler placement optimised for mass centralisation, includes 94dB quiet insert and spark arrestor screen insert, and precision fitment manufactured in the USA. Item ID: 042371. Type: Slip-on. Configuration: Single. Construction: Titanium. Finish: Blue anodised. Midpipe: Titanium. Endcap: Carbon fibre. Spark Arrestor: Screen insert included. Quiet Insert: 94dB insert included. Weight: 7.0 lbs. Not CARB compliant; for closed course only.","attributes":[{"label":"General Product Group","value":"Exhaust Systems & Parts"},{"label":"General Product Type","value":"Silencer"},{"label":"Variant Id","value":"286345"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9891_2EF4TA/017c9c6188615245.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9891_2EF4TA/017c9c6188615245.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9891_2EF4TA/daf5f71d1d3ffa3d.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9891_2EF4TA/d5ba55671ae104b4.jpg"],"description":"FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On with Carbon Cap. Designed for high-performance off-road and motocross competition, this slip-on muffler features a blue anodized titanium body and carbon end cap, engineered to centralize mass and deliver impressive horsepower gains across the RPM range. Aerospace-grade titanium and 100% American manufacturing ensure unmatched durability. Features include closed course use only, lightweight titanium construction with blue anodized finish, carbon fibre end cap for enhanced strength and aesthetics, significant power gain throughout the RPM range, Rapid Tuning System (RTS) for quick adjustments, shorter overall length for reduced crash susceptibility, muffler placement optimised for mass centralisation, includes 94dB quiet insert and spark arrestor screen insert, and precision fitment manufactured in the USA. Item ID: 042371. Type: Slip-on. Configuration: Single. Construction: Titanium. Finish: Blue anodised. Midpipe: Titanium. Endcap: Carbon fibre. Spark Arrestor: Screen insert included. Quiet Insert: 94dB insert included. Weight: 7.0 lbs. Not CARB compliant; for closed course only.","descriptionMarkdown":"### FMF Racing Factory 4.1 RCT Exhaust Silencer - Titanium Blue Anodized\n\nExperience peak performance with the FMF Racing Factory 4.1 RCT Titanium Anodized Slip-On. Engineered for competitive off-road and motocross riding, this exhaust system integrates FMF Resonance Chamber Technology™ to significantly boost power and reduce weight. Its distinctive blue anodised titanium body and carbon fibre end cap are meticulously designed for mass centralisation, delivering substantial horsepower gains across the entire RPM range. Constructed from aerospace-grade titanium and proudly manufactured in the USA, this system offers exceptional durability and a precise fit.\n\n#### Key Features:\n\n \n- Designed exclusively for closed course competition.\n \n- Constructed from lightweight titanium with a striking blue anodised finish.\n \n- Features a high-strength carbon fibre end cap for enhanced durability and aesthetics.\n \n- Provides noticeable power increases throughout the RPM band.\n \n- Equipped with the Rapid Tuning System (RTS) for quick and easy adjustments.\n \n- A shorter overall length design minimises the risk of damage from impacts.\n \n- Optimised muffler placement contributes to improved mass centralisation.\n \n- Includes a 94dB quiet insert for noise reduction and a spark arrestor screen insert for safety.\n \n- Precision engineered and manufactured entirely at FMF's facility in the USA, ensuring top quality and fitment.\n\n#### Specifications:\n\n \n- Type: Slip-on muffler\n \n- Configuration: Single\n \n- Construction Material: Titanium\n \n- Finish: Blue Anodised\n \n- Midpipe Material: Titanium\n \n- Endcap Material: Carbon Fibre\n \n- Spark Arrestor: Included (Screen insert)\n \n- Quiet Insert: Included (94dB)\n \n- Weight: Approximately 7.0 lbs\n \n- Compliance: Not CARB compliant; intended for closed course use only.","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 450F","cc":null,"notes":null,"years":"2019–2023"},{"make":"KAWASAKI","model":"KX 450X","cc":null,"notes":null,"years":"2019–2023"}],"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-19-23-kawasaki-kx-450-f-x-fmf-042371","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/562defbd411c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/562defbd411c: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."]}}