{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"83fc43740a4a","name":"Q4 Hex Exhaust Silencer 21-26 Honda CRF 450 R RX - FMF 041601","sku":"06-9939.FMF.Q4H","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":423.77,"formatted":"£423.77"},"summary":"The FMF Q4 HEX S/A 041601 is a slip-on exhaust silencer engineered for superior off-road performance while minimizing sound emissions. It features sophisticated chambers, baffles, and advanced multi-stage packing materials for robust power gains across the entire RPM range. This silencer meets USFS and FIM World Enduro noise regulations, includes a spark arrestor and quiet insert, and is constructed for rugged off-road durability. The system has a lightweight aluminium body with a natural finish, a stainless steel midpipe, and a stainless steel endcap. Manufactured in the USA with high-grade materials, its proprietary packing enhances long-term performance. Installation is a slip-on type. Item ID: 041601. Configuration: Single. Carb Warning: No.","attributes":[{"label":"General Product Group","value":"Exhaust Systems & Parts"},{"label":"General Product Type","value":"Silencer"},{"label":"Variant Id","value":"299083"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9939_2EFMF_2EQ4H/f3ac597d6fa90a85.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9939_2EFMF_2EQ4H/f3ac597d6fa90a85.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-9939_2EFMF_2EQ4H/6f5f715b104fd0f7.jpg"],"description":"The FMF Q4 HEX S/A 041601 is a slip-on exhaust silencer engineered for superior off-road performance while minimizing sound emissions. It features sophisticated chambers, baffles, and advanced multi-stage packing materials for robust power gains across the entire RPM range. This silencer meets USFS and FIM World Enduro noise regulations, includes a spark arrestor and quiet insert, and is constructed for rugged off-road durability. The system has a lightweight aluminium body with a natural finish, a stainless steel midpipe, and a stainless steel endcap. Manufactured in the USA with high-grade materials, its proprietary packing enhances long-term performance. Installation is a slip-on type. Item ID: 041601. Configuration: Single. Carb Warning: No.","descriptionMarkdown":"### FMF Q4 Hex Exhaust Silencer\n\nThe FMF Q4 HEX S/A exhaust system is engineered for riders demanding superior off-road performance while keeping sound emissions to a minimum. This slip-on muffler utilises sophisticated chambers, baffles, and advanced multi-stage packing materials to deliver robust power gains across the entire RPM range, all while meeting strict USFS and FIM World Enduro noise regulations. Its lightweight, durable construction makes it ideal for enduring the rigours of off-road racing, and it includes a spark arrestor for rider safety and regulatory compliance. Designed and manufactured in the USA, the Q4 HEX sets the benchmark for quiet, high-performance exhaust technology.\n\n**Key Features:**\n\n- Meets USFS and FIM World Enduro sound regulations for legal compliance.\n\n- Noticeably lighter than OEM exhaust systems.\n\n- Delivers increased power and torque across the full RPM range.\n\n- Includes a spark arrestor and quiet insert.\n\n- Constructed for rugged off-road durability.\n\n- Manufactured in the USA with high-grade materials.\n\n- Proprietary packing materials enhance long-term performance.\n\n- Slip-on installation for ease of fitment.\n\n**Specifications:**\n\n- Type: Slip-On\n\n- Configuration: Single\n\n- Construction: Aluminium body\n\n- Finish: Natural\n\n- Midpipe: Stainless Steel\n\n- Endcap: Stainless Steel\n\n- Spark Arrestor: Screen Insert (included)\n\n- Quiet Insert: Included","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 450R","cc":null,"notes":null,"years":"2021–2026"},{"make":"HONDA","model":"CRF 450RX","cc":null,"notes":null,"years":"2021–2026"}],"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/q4-hex-exhaust-silencer-21-26-honda-crf-450-r-rx-fmf-041601","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/83fc43740a4a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/83fc43740a4a: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."]}}