{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"7a0b07ef7a2b","name":"YAMAHA YZ 250 1990-1995 +0.50mm OVERSIZE 68.45mm TWIN RING PISTON","sku":"V.2154.050","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":234.82,"formatted":"£234.82"},"summary":"Vertex pistons are manufactured using Low-Ex (low expansion) Silicon aluminum alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are made using either gravity cast or hydraulic forging processes, then heat-treated using an automatic HT implant with solubilization by quench in hot water. This heat treatment process uses advanced technology for these aluminum alloys. Machining is completed using the latest CNC machines and software with diamond tools, allowing for specific surface finishes based on the piston's final application. Each 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 within the cylinder. A new all-over Phosphate Coating has been introduced, offering increased hardness and light surface porosity for superior adhesion and durability of the Molybdenum Coating. This piston is twin ring and 0.50mm oversize at 68.45mm.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-250-1990-1995-0.50mm-oversize-68.45mm-twin-ring-piston-7167-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-250-1990-1995-0.50mm-oversize-68.45mm-twin-ring-piston-7167-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex (low expansion) Silicon aluminum alloys with 12%, 18%, or 21% silicon content depending on the application. Pistons are made using either gravity cast or hydraulic forging processes, then heat-treated using an automatic HT implant with solubilization by quench in hot water. This heat treatment process uses advanced technology for these aluminum alloys. Machining is completed using the latest CNC machines and software with diamond tools, allowing for specific surface finishes based on the piston's final application. Each 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 within the cylinder. A new all-over Phosphate Coating has been introduced, offering increased hardness and light surface porosity for superior adhesion and durability of the Molybdenum Coating. This piston is twin ring and 0.50mm oversize at 68.45mm.","descriptionMarkdown":"### High-Performance Vertex Oversize Twin Ring Piston\n\nRestore your engine performance with the Vertex oversize twin ring piston. Engineered for durability and precision, this 68.45mm piston is designed to provide a reliable solution for top-end rebuilds requiring a 0.50mm overbore.\n\nVertex pistons are crafted from advanced Low-Ex silicon-charged aluminium alloys, chosen for their superior thermal stability. Through a combination of gravity casting or hydraulic forging and a sophisticated heat treatment process, these pistons achieve an exceptional material structure that stands up to the rigors of high-performance riding.\n\n### Advanced Engineering and Durability\n\n \n- Precision Manufacturing: Every piston is machined using high-tech CNC equipment and diamond tooling to ensure exact tolerances and optimal surface finishes.\n \n- Phosphate Coating: Features an all-over phosphate coating that increases surface hardness and provides light porosity, ensuring superior adhesion for the friction-reducing layer.\n \n- Molybdenum Bisulphite Coating: Applied to reduce friction during the break-in process and improve performance within the cylinder.\n \n- Quality Assurance: Each unit undergoes rigorous manual and automatic quality control inspections to guarantee consistency and reliability.\n \n- Twin Ring Design: Engineered to provide an effective seal and maintain compression, ensuring consistent power output.\n\nBy utilizing cutting-edge metallurgical processes and Formula One-inspired coatings, Vertex delivers a piston that extends service life and maintains performance under demanding conditions. This twin ring design is an excellent choice for riders looking to maintain the longevity and efficiency of their engine.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-250-1990-1995-050mm-oversize-6845mm-twin-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/7a0b07ef7a2b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/7a0b07ef7a2b: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."]}}