{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e9ff8742be4d","name":"KAWASAKI KX 250 1998-2001 GRADE B 66.36mm SINGLE RING RACE PISTON","sku":"V.2579B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":218.62,"formatted":"£218.62"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are produced using gravity casting or hydraulic forging, followed by heat treatment in an automatic HT implant with solubilization by quenching in hot water. Machining is performed using CNC machines and diamond tools to achieve specific surface finishes. Each Vertex piston undergoes manual and automatic quality control. Pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. A new Phosphate Coating is also available, offering increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for enhanced durability. This listing is for a 66.36mm single ring race piston, Grade B.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kx-250-1998-2001-grade-b-66.36mm-1685-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kx-250-1998-2001-grade-b-66.36mm-1685-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are produced using gravity casting or hydraulic forging, followed by heat treatment in an automatic HT implant with solubilization by quenching in hot water. Machining is performed using CNC machines and diamond tools to achieve specific surface finishes. Each Vertex piston undergoes manual and automatic quality control. Pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. A new Phosphate Coating is also available, offering increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for enhanced durability. This listing is for a 66.36mm single ring race piston, Grade B.","descriptionMarkdown":"### Vertex Single Ring Race Piston\n\nThe Vertex Single Ring Race Piston is engineered for high-performance engine reliability. Utilizing advanced manufacturing techniques, this piston is crafted from exotic Low-Ex (low expansion) silicon-charged aluminium alloys to ensure structural integrity and thermal resistance under demanding racing conditions.\n\nEvery piston undergoes a sophisticated heat treatment process, including solubilization and hot water quenching, to refine the material structure. Precision machining is performed using state-of-the-art CNC technology and diamond tooling to achieve exact surface finishes tailored for optimal performance.\n\n### Key Features\n\n \n- Advanced Alloy Composition: Constructed with 12%, 18%, or 21% silicon content depending on the specific application requirements.\n \n- Dual-Layer Coating System: Features a Molybdenum Bisulphite black coating to reduce friction and assist in the break-in process. This is combined with an all-over Phosphate Coating that provides surface hardness and superior adhesion for the Molybdenum layer, significantly extending durability.\n \n- Precision Engineering: Manufactured through either gravity casting or hydraulic forging processes for maximum strength.\n \n- Quality Assured: Each unit is subjected to rigorous manual and automatic quality control inspections to ensure industry-leading standards.\n \n- Optimized Design: Specifically machined to maintain internal tolerances, promoting efficient combustion and engine power output.\n\nThis Grade B piston is designed to meet the rigorous demands of competitive riding, offering enhanced protection against wear and improved service life through its specialized coating technology.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/kawasaki-kx-250-1998-2001-grade-b-6636mm-single-ring-race-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e9ff8742be4d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e9ff8742be4d: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."]}}