{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ba49ebb1ed23","name":"Yamaha YFZ 450R Quad 2009-2017 98mm 478cc Big Bore Kit","sku":"CW.21003-K02","brand":"Cylinder Works","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":874.8,"formatted":"£874.80"},"summary":"Cylinder Works Big Bore Kit. Transforms your ATV from modest to monster in one box. Includes stock appearing, nickel silicon carbide, precision honed big bore cylinder kit, all required gaskets, and Vertex big bore piston complete with rings, pin, and circlips. For Yamaha YFZ 450R Quad 2009-2017 98mm 478cc.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yfz-450r-quad-2010-2013-98mm-478cc-big-bore-kit-2222-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yfz-450r-quad-2010-2013-98mm-478cc-big-bore-kit-2222-p.jpg"],"description":"Cylinder Works Big Bore Kit. Transforms your ATV from modest to monster in one box. Includes stock appearing, nickel silicon carbide, precision honed big bore cylinder kit, all required gaskets, and Vertex big bore piston complete with rings, pin, and circlips. For Yamaha YFZ 450R Quad 2009-2017 98mm 478cc.","descriptionMarkdown":"### Unlock Superior Performance with the Cylinder Works Big Bore Kit\n\nTransform your vehicle from modest to monster with the Cylinder Works Big Bore Kit. Designed for riders seeking a significant increase in power and displacement, this all-in-one performance upgrade provides the precision engineering required to elevate your engine's capabilities. Whether you are looking to dominate on the track or enhance your off-road experience, this kit delivers the reliability and strength needed for high-performance riding.\n\n### Precision Engineering and Durability\n\nAt the heart of this kit is a high-quality big bore cylinder, precision honed for optimal performance. The cylinder features a durable Nickel Silicon Carbide coating, providing a stock-appearing finish that offers superior heat dissipation and reduced friction for a longer engine life. By increasing your displacement to 478cc with a 98mm bore, this kit ensures your engine operates at peak efficiency.\n\n### Everything You Need for a Complete Upgrade\n\nCylinder Works simplifies the engine modification process by packaging every essential component into one convenient box. You no longer need to source individual parts to complete your top-end rebuild. Each kit includes high-quality components designed to work in perfect harmony with your machine.\n\n \n- Premium Big Bore Cylinder: Precision honed with a Nickel Silicon Carbide plating for maximum durability and thermal stability.\n \n- Vertex Big Bore Piston: Includes a complete piston kit featuring rings, wrist pin, and circlips for a precise seal and smooth operation.\n \n- Comprehensive Gasket Set: All necessary gaskets are included to ensure a secure, leak-free installation.\n \n- Performance Focused: Engineered specifically to increase displacement and overall horsepower output.\n\nUpgrade your engine with confidence using a kit trusted by professionals and enthusiasts alike. With Cylinder Works, you get the performance gains you demand without the complexity of sourcing individual aftermarket components.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yfz-450r-quad-2009-2017-98mm-478cc-big-bore-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ba49ebb1ed23:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ba49ebb1ed23:1"}},"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."]}}