{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"8b5037ca82e3","name":"KTM SX 144 / 150 2007-2015 GRADE D 55.98mm","sku":"V.3383D","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":5,"price":{"amount":210.52,"formatted":"£210.52"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18% or 21% silicon, depending on the application. Pistons are made using gravity casting or hydraulic forging, followed by a heat treatment process. Machining is done with CNC machines and diamond tools for specific surface finishes. Each piston undergoes manual and automatic quality control. Vertex pistons have a Molybdenum Bisulphite black coating for break-in and friction reduction, and a new Phosphate Coating for increased hardness, surface porosity, and extended durability. This product is a Grade D 55.98mm piston.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-144-150-2007-2015-grade-d-55.98mm-6330-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-144-150-2007-2015-grade-d-55.98mm-6330-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18% or 21% silicon, depending on the application. Pistons are made using gravity casting or hydraulic forging, followed by a heat treatment process. Machining is done with CNC machines and diamond tools for specific surface finishes. Each piston undergoes manual and automatic quality control. Vertex pistons have a Molybdenum Bisulphite black coating for break-in and friction reduction, and a new Phosphate Coating for increased hardness, surface porosity, and extended durability. This product is a Grade D 55.98mm piston.","descriptionMarkdown":"### Vertex High-Performance Piston - Grade D 55.98mm\n\nEnhance the performance and reliability of your engine with this premium Vertex piston. Engineered for durability and precision, Vertex pistons are trusted by riders and mechanics worldwide for their ability to withstand demanding racing conditions while maintaining consistent power output.\n\nVertex pistons are manufactured using exotic Low-Ex (low expansion) aluminium alloys, specifically chosen for their high silicon content. This advanced material composition ensures superior dimensional stability and heat resistance. The manufacturing process utilizes either a gravity cast or hydraulic forging method, followed by a state-of-the-art heat treatment process that refines the material structure to ensure maximum strength and longevity.\n\n**Key Features:**\n\n- Precision Engineering: Machined using the latest CNC technology and diamond-tipped tools to achieve exact tolerances and specific surface finishes for optimal performance.\n\n- Advanced Coatings: Features a Molybdenum Bisulphite black coating to assist with the break-in process and significantly reduce friction during operation.\n\n- Enhanced Durability: Incorporates a phosphate coating derived from Formula One technology. This provides a slight increase in hardness and improved surface porosity, ensuring superior adhesion of the Molybdenum coating and doubling its operational lifespan.\n\n- Quality Assured: Every piston undergoes a rigorous manual and automatic quality control inspection to ensure it meets the highest industry standards for reliability.\n\nDesigned for those who demand the best from their machine, this Grade D 55.98mm piston offers the perfect combination of structural integrity, reduced friction, and long-term durability. Whether you are performing a top-end rebuild or a full engine refresh, Vertex provides the professional-grade components required to keep your engine running at its peak.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/ktm-sx-144-150-2007-2015-grade-d-5598mm","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/8b5037ca82e3:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/8b5037ca82e3:1"}},"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."]}}