{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1bec8f1ad789","name":"YAMAHA YFZ 450S 2004-2009 YFZ 450R 2009-2017 BIG BORE 98mm 480cc","sku":"V.3403","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":323.92,"formatted":"£323.92"},"summary":"Vertex 23551C Four-stroke Pistons. Forged from high-quality 2618 aluminum alloy, these pistons are designed for the demands of modern four-stroke engines. Each piston features a Molybdenum Disulphide (MOS2) coating on the piston skirt to assist with break-in and minimize wear. Vertex offers unique piston profiles and compression ratios in A, B, C, and D sizes, with variations of 0.004 inches, allowing for precise cylinder fitment to maximize power and performance while reducing blow-by and oil consumption. This specific piston is a big bore 98mm 480cc.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yfz-450s-2004-2009-yfz-450r-2009-2017-big-bore-98mm-480cc-5069-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yfz-450s-2004-2009-yfz-450r-2009-2017-big-bore-98mm-480cc-5069-p.jpg"],"description":"Vertex 23551C Four-stroke Pistons. Forged from high-quality 2618 aluminum alloy, these pistons are designed for the demands of modern four-stroke engines. Each piston features a Molybdenum Disulphide (MOS2) coating on the piston skirt to assist with break-in and minimize wear. Vertex offers unique piston profiles and compression ratios in A, B, C, and D sizes, with variations of 0.004 inches, allowing for precise cylinder fitment to maximize power and performance while reducing blow-by and oil consumption. This specific piston is a big bore 98mm 480cc.","descriptionMarkdown":"### Vertex 98mm 480cc Big Bore Piston Kit\n\nEnhance the power and reliability of your engine with the Vertex Big Bore Piston Kit. Designed for high-performance applications, this 98mm piston is engineered to transform your engine into a 480cc powerhouse. Whether you are racing or looking for a significant upgrade in torque and throttle response, this kit provides the precision and durability required for demanding four-stroke motors.\n\n**Superior Construction and Material**\n\nEach Vertex piston is forged from high-quality 2618 aluminum alloy. This premium material selection is chosen specifically for its ability to withstand the extreme pressures and heat generated by modern, high-compression engines. The result is a lightweight yet incredibly robust component that maintains its structural integrity under intense operating conditions.\n\n**Advanced Piston Technology**\n\nVertex incorporates industry-leading features to maximize engine longevity and efficiency:\n\n- Molybdenum Disulphide (MOS2) Coating: Every piston skirt features a specialized MOS2 coating. This advanced treatment aids in the break-in process, provides superior lubrication during initial startup, and significantly reduces friction and wear over the life of the piston.\n\n- Precision Profiles: Vertex is known for its unique piston profiles that optimize combustion and performance.\n\n- Optimized Sizing: Available in specific sizing increments (A, B, C, and D), these pistons allow for a perfect match to your cylinder bore. Precise sizing is essential for maximizing power output while effectively minimizing blow-by and oil consumption.\n\n**Key Benefits**\n\n- Engineered to increase displacement to 480cc.\n\n- Forged 2618 aluminum alloy for maximum strength.\n\n- Reduces engine wear through advanced skirt coating.\n\n- Improves power delivery and throttle response.\n\n- Designed to meet the rigorous demands of high-performance riding.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yfz-450s-2004-2009-yfz-450r-2009-2017-big-bore-98mm-480cc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1bec8f1ad789:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1bec8f1ad789:1"}},"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."]}}