{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"00955b91b9d6","name":"HONDA CR 250 1989-1994 GRADE B 66.35mm TWIN RING REPLICA","sku":"V.2153B","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 (low expansion) Silicon aluminium alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are produced using gravity casting or hydraulic forging, followed by a heat treatment process utilizing an automatic HT implant with solubilization by quench in hot water. Machining is done on the latest CNC machines with 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 for increased hardness, surface porosity, and enhanced Molybdenum Coating adhesion. This is a Grade B replica piston with twin rings and a 66.35mm bore.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-1989-1994-grade-b-66.35mm-twin-ring-replica-1559-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-cr-250-1989-1994-grade-b-66.35mm-twin-ring-replica-1559-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex (low expansion) Silicon aluminium alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are produced using gravity casting or hydraulic forging, followed by a heat treatment process utilizing an automatic HT implant with solubilization by quench in hot water. Machining is done on the latest CNC machines with 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 for increased hardness, surface porosity, and enhanced Molybdenum Coating adhesion. This is a Grade B replica piston with twin rings and a 66.35mm bore.","descriptionMarkdown":"### Vertex Replica Piston 66.35mm Twin Ring\n\nThe Vertex Replica Piston is engineered to meet the demanding requirements of high-performance two-stroke engines. Designed for precision and reliability, this piston is manufactured using advanced aluminium alloys specifically selected for their low expansion properties, ensuring structural integrity under extreme operating temperatures.\n\n### Advanced Manufacturing and Material Quality\n\nVertex utilizes either gravity casting or hydraulic forging processes to create high-strength blanks. These components undergo a sophisticated heat treatment process in an automated implant with hot water quenching, which refines the material structure for maximum durability. Precision CNC machining and diamond tooling are employed to achieve exact dimensions and specific surface finishes tailored to the requirements of your engine.\n\n### Key Features\n\n- Twin Ring Design: Engineered to provide an optimal seal and improved heat transfer between the piston and cylinder wall.\n\n- 66.35mm Diameter: Precision machined to specific tolerances for a reliable fit.\n\n- Phosphate Coating: Features a modern phosphate coating that provides a slight hardness increase and light surface porosity. This surface acts as a superior base for the Molybdenum Bisulphite coating.\n\n- Molybdenum Bisulphite Coating: A high-performance black coating that assists during the critical engine break-in period and significantly reduces internal friction during operation.\n\n- Extended Durability: The combination of phosphate and molybdenum coatings ensures the piston surface remains protected for twice as long as standard coatings.\n\n- Quality Assured: Every piston undergoes a rigorous manual and automatic quality control inspection to ensure it meets the highest standards for performance and consistency.\n\nWhether you are performing a routine rebuild or a full engine restoration, Vertex pistons provide the professional-grade quality needed to restore power and maintain engine reliability.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-cr-250-1989-1994-grade-b-6635mm-twin-ring-replica","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/00955b91b9d6:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/00955b91b9d6:1"}},"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. 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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."]}}