{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"edb67f0ad85a","name":"HONDA CR 250 2005-2007 GRADE B 66.35mm SINGLE RING RACE PISTON","sku":"V.3133B","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 depending on application. Piston blanks are gravity cast or hydraulically forged and then heat treated in an automatic HT implant with solubilization by quench in hot water. Machining is completed using the latest CNC machines, software, and diamond tools to achieve specific surface finishes for each application. 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 newer Phosphate Coating provides increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for extended durability. This is a Grade B, 66.35mm single ring race piston.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-2005-2007-grade-b-66.35mm-single-ring-race-piston-6246-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-2005-2007-grade-b-66.35mm-single-ring-race-piston-6246-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18% or 21% silicon depending on application. Piston blanks are gravity cast or hydraulically forged and then heat treated in an automatic HT implant with solubilization by quench in hot water. Machining is completed using the latest CNC machines, software, and diamond tools to achieve specific surface finishes for each application. 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 newer Phosphate Coating provides increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for extended durability. This is a Grade B, 66.35mm single ring race piston.","descriptionMarkdown":"### Vertex Grade B 66.35mm Single Ring Race Piston\n\nUpgrade your engine performance with this high-quality Vertex race piston. Engineered for precision and durability, this 66.35mm single ring piston is designed to meet the rigorous demands of competitive racing, ensuring your engine runs at its peak potential.\n\n### Advanced Manufacturing and Material Technology\n\nVertex pistons are crafted using specialized Low-Ex (low expansion) silicon-charged aluminum alloys, with silicon content ranging from 12% to 21% depending on the specific application requirements. Through advanced gravity casting or hydraulic forging processes, each piston is refined using state-of-the-art heat treatment technology. This results in a superior material structure that provides exceptional strength and resistance to thermal stress.\n\n### Precision Engineering and Surface Finishing\n\nEvery piston is machined using high-tech CNC equipment and precision diamond tools. This meticulous manufacturing process allows for specific surface finishes optimized for the high-performance environment of your engine. To ensure peak reliability, every unit undergoes exhaustive manual and automatic quality control inspections.\n\n### Enhanced Durability and Friction Reduction\n\nThis piston features a specialized Molybdenum Bisulphite black coating, which assists in the break-in process and significantly reduces friction during operation. Additionally, Vertex utilizes a phosphate coating, inspired by Formula One engine technology. This treatment increases surface hardness and provides a light porosity that ensures superior adhesion of the Molybdenum coating, effectively doubling its durability for long-lasting performance.\n\n### Key Features\n\n \n- Diameter: 66.35mm\n \n- Grade: B\n \n- Ring Configuration: Single ring design for reduced friction and improved racing response\n \n- Material: High-performance Low-Ex silicon-charged aluminum alloy\n \n- Heat Treatment: Precision automated heat treatment for refined material structure\n \n- Advanced Coating: Molybdenum Bisulphite black coating for friction reduction and break-in protection\n \n- Phosphate Treatment: Integrated coating for increased hardness and improved lubricant adhesion\n \n- Quality Assurance: Rigorous manual and automatic inspection process","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-cr-250-2005-2007-grade-b-6635mm-single-ring-race-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/edb67f0ad85a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/edb67f0ad85a: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."]}}