{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"08787f17e9ba","name":"KAWASAKI KX 250 1998-2001 GRADE B 66.36mm TWIN RING PISTON","sku":"V.2521B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":218.62,"formatted":"£218.62"},"summary":"Vertex pistons are manufactured using Low-Ex Silicon aluminium alloys with 12%, 18% or 21% silicon content. They are produced using gravity casting or hydraulic forging, followed by a heat treatment process. Machining is done using CNC machines and diamond tools to achieve specific surface finishes. Each piston undergoes manual and automatic quality control. Vertex pistons feature a Molybdenum Bisulphite black coating for break-in and friction reduction, and a new Phosphate Coating that increases hardness, surface porosity, and Molybdenum coating durability. This piston has a 66.36mm bore size and is designed for twin ring applications.","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 Silicon aluminium alloys with 12%, 18% or 21% silicon content. They are produced using gravity casting or hydraulic forging, followed by a heat treatment process. Machining is done using CNC machines and diamond tools to achieve specific surface finishes. Each piston undergoes manual and automatic quality control. Vertex pistons feature a Molybdenum Bisulphite black coating for break-in and friction reduction, and a new Phosphate Coating that increases hardness, surface porosity, and Molybdenum coating durability. This piston has a 66.36mm bore size and is designed for twin ring applications.","descriptionMarkdown":"### High-Performance Vertex Twin Ring Piston\n\nUpgrade your engine's reliability and performance with this precision-engineered Vertex Twin Ring Piston. Designed for riders who demand consistency and durability, this 66.36mm piston is manufactured using advanced aluminium alloys and cutting-edge production techniques to ensure a perfect fit and long service life.\n\n### Advanced Material Technology\n\nVertex pistons are crafted from high-quality Low-Ex silicon-charged aluminium alloys. Through a rigorous heat treatment process, the material structure is refined to provide superior strength and thermal resistance. The machining process utilizes state-of-the-art CNC technology and diamond tooling to achieve precise surface finishes tailored for high-performance engine applications.\n\n### Key Features\n\n \n- Precision Engineering: Manufactured with advanced CNC software and diamond tools for exacting tolerances.\n \n- Twin Ring Design: Engineered to provide an excellent seal and consistent compression.\n \n- Advanced Coatings: Features a Molybdenum Bisulphite black coating to reduce friction during the critical break-in period.\n \n- Phosphate Coating: Includes an all-over phosphate treatment that improves surface hardness and provides superior adhesion for the Molybdenum coating, significantly extending durability.\n \n- Quality Assured: Every piston undergoes strict manual and automatic quality control inspections to meet professional standards.\n\nWhether you are rebuilding your top end for competition or maintaining your machine for recreational use, this Vertex piston offers the technical excellence required to keep your engine running at its peak.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/kawasaki-kx-250-1998-2001-grade-b-6636mm-twin-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/08787f17e9ba:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/08787f17e9ba: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."]}}