{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4d394866c51a","name":"YAMAHA YZ 85 2002 - 2022 GRADE A 47.44mm SINGLE RING PISTON","sku":"V.4370A","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":121.42,"formatted":"£121.42"},"summary":"Vertex pistons are manufactured using Low-Ex Silicon aluminium alloys with 12%, 18% or 21% silicon content, depending on the application. They are produced using either a gravity cast or hydraulic forging process, followed by a hi-tech heat treatment in an automatic plant with solubilization by quench in hot water. Machining is completed using the latest CNC machines and software with diamond tools to achieve specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Vertex pistons are coated with a special Molybdenum Bisulphite black coating to aid break-in and reduce friction. A new Phosphate Coating, developed from Formula One engine technology, offers increased hardness, light surface porosity, and superior adhesion and durability of the Molybdenum Coating. This piston has a bore of 47.44mm and is a single ring design.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-85-2002-2018-grade-a-47.44mm-1588-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-85-2002-2018-grade-a-47.44mm-1588-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex Silicon aluminium alloys with 12%, 18% or 21% silicon content, depending on the application. They are produced using either a gravity cast or hydraulic forging process, followed by a hi-tech heat treatment in an automatic plant with solubilization by quench in hot water. Machining is completed using the latest CNC machines and software with diamond tools to achieve specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Vertex pistons are coated with a special Molybdenum Bisulphite black coating to aid break-in and reduce friction. A new Phosphate Coating, developed from Formula One engine technology, offers increased hardness, light surface porosity, and superior adhesion and durability of the Molybdenum Coating. This piston has a bore of 47.44mm and is a single ring design.","descriptionMarkdown":"### Vertex Grade A 47.44mm Single Ring Piston\n\nMaintain peak engine performance with the Vertex Grade A 47.44mm single ring piston. Engineered for precision and durability, this high-performance piston is crafted using advanced Low-Ex silicon-charged aluminium alloys, offering exceptional thermal stability and strength. Whether you are performing a routine rebuild or a full engine restoration, this piston provides the reliability needed for demanding riding conditions.\n\n### Key Features and Manufacturing Technology\n\n \n- Advanced Alloy Composition: Constructed from exotic aluminium alloys charged with high levels of silicon to ensure low expansion and maximum structural integrity.\n \n- Precision Engineering: Manufactured through gravity casting or hydraulic forging, followed by a refined heat treatment process using automated quenching for superior material consistency.\n \n- CNC Machined: Finished using cutting-edge CNC technology and diamond tooling to achieve precise surface finishes tailored to specific engine requirements.\n \n- Molybdenum Bisulphite Coating: Features a specialized black coating that assists during the initial piston break-in period and significantly reduces friction within the cylinder walls.\n \n- Phosphate Coating Integration: Incorporates advanced phosphate coating technology for increased surface hardness and improved adhesion of the Molybdenum layer, effectively doubling the durability of the piston coating.\n \n- Quality Assured: Every piston undergoes rigorous manual and automatic quality control inspections to ensure it meets the highest industry standards.\n\n### Technical Specifications\n\n \n- Brand: Vertex\n \n- Piston Type: Single Ring\n \n- Grade: A\n \n- Diameter: 47.44mm","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-85-2002-2022-grade-a-4744mm-single-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4d394866c51a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4d394866c51a: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."]}}