{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"50af456a5323","name":"YAMAHA YZ 250 1990-1995 GRADE B 67.95mm TWIN RING PISTON","sku":"V.2154B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":5,"price":{"amount":218.62,"formatted":"£218.62"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content. They are produced using gravity casting or hydraulic forging, followed by a heat treatment process involving solubilization by quench in hot water. Machining is performed on CNC machines with diamond tools to achieve specific surface finishes. Each piston undergoes rigorous quality control. Vertex pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. A new Phosphate Coating is also available, offering increased hardness and surface porosity for superior adhesion and durability of the Molybdenum Coating. This piston has a 67.95mm bore and twin rings.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-250-1990-1995-grade-b-67.95mm-twin-ring-piston-5043-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-250-1990-1995-grade-b-67.95mm-twin-ring-piston-5043-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon content. They are produced using gravity casting or hydraulic forging, followed by a heat treatment process involving solubilization by quench in hot water. Machining is performed on CNC machines with diamond tools to achieve specific surface finishes. Each piston undergoes rigorous quality control. Vertex pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. A new Phosphate Coating is also available, offering increased hardness and surface porosity for superior adhesion and durability of the Molybdenum Coating. This piston has a 67.95mm bore and twin rings.","descriptionMarkdown":"### Vertex High-Performance Twin Ring Piston\n\nRestore your engine's power and reliability with this premium Vertex replacement piston. Engineered for precision and longevity, Vertex pistons are manufactured using advanced Low-Ex silicon-charged aluminum alloys, ensuring optimal thermal stability and structural integrity during high-performance operation.\n\n### Advanced Manufacturing Technology\n\nVertex utilizes either gravity casting or hydraulic forging processes to create the piston blank, followed by a state-of-the-art heat treatment in an automated facility. This process refines the material structure for maximum durability. Every component is machined on high-precision CNC equipment using diamond tooling to achieve exact surface finishes tailored to your engine's specific requirements.\n\n### Key Features\n\n \n- Precision Engineering: Manufactured from specialized Low-Ex aluminum alloys with 12%, 18%, or 21% silicon content depending on the application.\n \n- Durable Coatings: Features a Molybdenum Bisulphite black coating to reduce friction and assist with the initial break-in period.\n \n- Enhanced Durability: Incorporates an advanced Phosphate coating that increases surface hardness and improves the adhesion of the Molybdenum coating, significantly extending the life of the finish.\n \n- Quality Assured: Every piston undergoes a rigorous manual and automatic quality control inspection to ensure it meets the highest industry standards.\n \n- Design: Twin ring configuration for reliable compression sealing and heat transfer.\n \n- Specifications: Grade B piston with a 67.95mm diameter.\n\nWhether you are rebuilding for maintenance or chasing improved performance, Vertex pistons provide the professional-grade quality and reliability required for demanding riding conditions.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-250-1990-1995-grade-b-6795mm-twin-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/50af456a5323:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/50af456a5323:1"}},"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."]}}