{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"362df6a3ca20","name":"HONDA CR 250 2002-2004 GRADE D 66.37mm SINGLE RING RACE PISTON","sku":"V.2810D","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 aluminium alloys with 12%, 18%, or 21% silicon content. Pistons are made using gravity casting or hydraulic forging and refined with a high-tech heat treatment process. Machining is performed using advanced CNC machines and diamond tools, achieving specific surface finishes. All Vertex pistons undergo rigorous quality control. They are coated with Molybdenum Bisulphite for break-in and friction reduction. A newer Phosphate Coating offers increased hardness and porosity for superior adhesion and durability. This single ring race piston has a 66.37mm bore.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-2002-2004-grade-d-66.37mm-single-ring-race-piston-1577-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-2002-2004-grade-d-66.37mm-single-ring-race-piston-1577-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content. Pistons are made using gravity casting or hydraulic forging and refined with a high-tech heat treatment process. Machining is performed using advanced CNC machines and diamond tools, achieving specific surface finishes. All Vertex pistons undergo rigorous quality control. They are coated with Molybdenum Bisulphite for break-in and friction reduction. A newer Phosphate Coating offers increased hardness and porosity for superior adhesion and durability. This single ring race piston has a 66.37mm bore.","descriptionMarkdown":"### Vertex High-Performance Single Ring Race Piston\n\nEnhance your engine performance with the Vertex Grade D Race Piston. Engineered for reliability and power, this piston is crafted using advanced Low-Ex aluminium alloys with high silicon content to ensure exceptional durability and thermal stability under race conditions.\n\nVertex utilizes a sophisticated gravity cast or hydraulic forging process, followed by precision heat treatment, to refine the material structure. The manufacturing process employs state-of-the-art CNC machinery and diamond tooling to achieve exact tolerances and specific surface finishes tailored for high-performance applications.\n\n### Key Features and Benefits\n\n \n- Advanced Material Composition: Constructed from exotic aluminium alloys charged with high levels of silicon to minimize thermal expansion.\n \n- Superior Coating Technology: Features a Molybdenum Bisulphite black coating to reduce friction and assist with the initial break-in period.\n \n- Enhanced Durability: Incorporates a phosphate coating that provides increased surface hardness and superior adhesion for the Molybdenum layer, significantly extending the life of the piston.\n \n- Rigorous Quality Control: Every unit undergoes strict manual and automatic inspection to maintain the highest manufacturing standards.\n \n- Optimized Design: Engineered for racing performance to ensure maximum efficiency inside the cylinder.\n\nVertex pistons represent the pinnacle of aftermarket engineering, trusted by riders who demand consistent power and long-lasting reliability. This single-ring configuration is designed to meet the rigorous demands of competitive riding.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-cr-250-2002-2004-grade-d-6637mm-single-ring-race-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/362df6a3ca20:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/362df6a3ca20:1"}},"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."]}}