{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ad1d9cdf3542","name":"Q4 Hex Exhaust Silencer 18-26 Yamaha 450 YZ WR F FX - FMF 044442","sku":"06-1784.SIL.Q4","brand":"FMF Exhausts","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":5,"price":{"amount":423.77,"formatted":"£423.77"},"summary":"FMF's Q4 HEX S/A 044442 exhaust offers high-performance, low-noise off-road riding with advanced muffler technology, intricate internal chambers, and proprietary multi-stage packing. It provides power gains across the rev range while meeting USFS and FIM World Enduro sound standards. Features include an integrated spark arrestor, durable construction for extended off-road use, and a quiet insert. This slip-on system is substantially lighter than OEM exhausts. Constructed and manufactured in the USA with aluminium construction, stainless steel midpipe, and endcap. Weight 5.7 lbs. Closed course use only.","attributes":[{"label":"General Product Group","value":"Exhaust Systems & Parts"},{"label":"General Product Type","value":"Silencer"},{"label":"Variant Id","value":"209413"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1784_2ESIL_2EQ4/cdd94718d7c4de37.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1784_2ESIL_2EQ4/cdd94718d7c4de37.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/06-1784_2ESIL_2EQ4/e854ec8a7f73f08c.jpg"],"description":"FMF's Q4 HEX S/A 044442 exhaust offers high-performance, low-noise off-road riding with advanced muffler technology, intricate internal chambers, and proprietary multi-stage packing. It provides power gains across the rev range while meeting USFS and FIM World Enduro sound standards. Features include an integrated spark arrestor, durable construction for extended off-road use, and a quiet insert. This slip-on system is substantially lighter than OEM exhausts. Constructed and manufactured in the USA with aluminium construction, stainless steel midpipe, and endcap. Weight 5.7 lbs. Closed course use only.","descriptionMarkdown":"### FMF Q4 Hex Exhaust Silencer\n\nElevate your off-road riding experience with the FMF Q4 Hex Exhaust Silencer. This high-performance silencer is engineered to deliver exceptional power gains across the entire RPM range while adhering to strict sound regulations. Its advanced muffler technology and specialized packing ensure a potent yet quiet performance, making it ideal for trail and enduro riders who demand reliability and efficiency.\n\n**Key Features:**\n\n- Significantly reduced noise levels for compliant off-road use.\n\n- Meets USFS and FIM World Enduro sound standards.\n\n- Provides noticeable power improvements throughout the rev band.\n\n- Includes an integrated spark arrestor screen insert.\n\n- Substantially lighter than stock exhausts, contributing to better handling.\n\n- Durable construction designed for demanding off-road conditions.\n\n- Comes with a quiet insert for further sound reduction.\n\n- Manufactured in the USA.\n\n**Specifications:**\n\n- Type: Slip-On\n\n- Configuration: Single\n\n- Construction Material: Aluminum\n\n- Midpipe Material: Stainless Steel\n\n- Endcap Material: Stainless Steel\n\n- Finish: Natural\n\n- Spark Arrestor: Included (Screen Insert)\n\n- Quiet Insert: Included\n\n- Weight: 5.7 lbs\n\n- Application: Closed course use only","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2019–2024"},{"make":"YAMAHA","model":"WRF 450","cc":null,"notes":null,"years":"2019"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2018–2026"},{"make":"YAMAHA","model":"YZ 450FX","cc":null,"notes":null,"years":"2019–2025"},{"make":"YAMAHA","model":"YZF 450","cc":null,"notes":null,"years":"2018–2020"},{"make":"YAMAHA","model":"YZF X 450","cc":null,"notes":null,"years":"2019–2020"}],"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-18-26-yamaha-450-yz-wr-f-fx-fmf-044442","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ad1d9cdf3542:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ad1d9cdf3542:1"}},"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."]}}