{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3d13e7e1941d","name":"KAWASAKI KX 250 1998-2001 GRADE A 66.35mm TWIN RING PISTON","sku":"V.2521A","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":218.62,"formatted":"£218.62"},"summary":"Vertex pistons are manufactured using Low-Ex aluminum alloys with 21% silicon. The gravity cast or hydraulic forging process is followed by a hi-tech heat treatment and solubilization by quench in hot water. Machining is completed using the latest CNC machines and software with diamond tools. 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 offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating, doubling durability. This is a Grade A twin ring piston with a 66.35mm bore.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kx-250-1998-2001-grade-a-66.35mm-1684-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kx-250-1998-2001-grade-a-66.35mm-1684-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminum alloys with 21% silicon. The gravity cast or hydraulic forging process is followed by a hi-tech heat treatment and solubilization by quench in hot water. Machining is completed using the latest CNC machines and software with diamond tools. 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 offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating, doubling durability. This is a Grade A twin ring piston with a 66.35mm bore.","descriptionMarkdown":"### Premium Grade A 66.35mm Twin Ring Piston\n\nEngineered for peak performance and reliability, this Grade A twin ring piston is designed to meet the rigorous demands of high-performance engines. Vertex pistons are manufactured using exotic Low-Ex (low expansion) silicon-charged aluminium alloys, chosen specifically for their superior durability and thermal stability.\n\nEvery piston undergoes a precision manufacturing process, utilizing gravity casting or hydraulic forging, followed by state-of-the-art heat treatment. This refined material structure ensures consistent performance under extreme operating conditions. Using advanced CNC machining and diamond tooling, Vertex achieves precise tolerances and specific surface finishes tailored to the exact requirements of your engine.\n\n### Advanced Coating Technology\n\nThis piston features a specialized Molybdenum Bisulphite black coating, which serves two critical functions: it assists during the initial break-in period and significantly reduces friction during operation. Furthermore, the piston incorporates a high-durability Phosphate coating. Inspired by Formula One engine technology, this layer provides a slight hardness increase and light surface porosity, which ensures superior adhesion of the Molybdenum coating and effectively doubles its operational lifespan.\n\n### Key Features\n\n \n- Material Excellence: Crafted from high-specification, low-expansion silicon-charged aluminium alloys.\n \n- Precision Engineering: Manufactured using advanced CNC technology and diamond-tipped tools for exact dimensions.\n \n- Enhanced Durability: Heat-treated for improved material structural integrity and thermal resistance.\n \n- Friction Reduction: Molybdenum Bisulphite black coating minimizes internal engine drag.\n \n- Extended Longevity: Phosphate coating provides superior adhesion for the friction-reducing layers, ensuring long-lasting protection.\n \n- Quality Assured: Each unit passes through a rigorous manual and automatic quality control process to ensure peak performance standards.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/kawasaki-kx-250-1998-2001-grade-a-6635mm-twin-ring-piston","buyOneNow":null,"basketWithThis":null}},"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."]}}