{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f0f9bf99c295","name":"YAMAHA YZ 125 1997 OVERSIZE +0.50mm 54.45mm SINGLE RING PISTON","sku":"V.2441.050","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":186.22,"formatted":"£186.22"},"summary":"Vertex pistons are manufactured using Low-Ex 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. Machining is performed using CNC machines and 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 newer Phosphate Coating for enhanced durability and adhesion. This piston is single ring and oversize at +0.50mm with a 54.45mm diameter.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-125-1997-grade-a-53.93mm-single-ring-piston-1607-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-125-1997-grade-a-53.93mm-single-ring-piston-1607-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex 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. Machining is performed using CNC machines and 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 newer Phosphate Coating for enhanced durability and adhesion. This piston is single ring and oversize at +0.50mm with a 54.45mm diameter.","descriptionMarkdown":"### Vertex Oversize Single Ring Piston\n\nRestore your engine performance with this premium Vertex oversize piston. Engineered for durability and precision, this component is designed to meet the rigorous demands of high-performance riding. Whether you are performing a top-end rebuild or general maintenance, Vertex pistons provide the reliability needed to keep your engine running at its peak.\n\n### Advanced Manufacturing and Material Quality\n\nVertex pistons are crafted using specialized Low-Ex (low expansion) silicon-charged aluminium alloys, with silicon content ranging from 12% to 21% depending on the specific application requirements. Through either gravity casting or hydraulic forging, these pistons achieve superior structural integrity, further enhanced by an advanced heat treatment process involving automatic solubilization and hot water quenching.\n\n### Key Features\n\n- Oversize Engineering: Precision machined to +0.50mm over standard sizing (54.45mm diameter) to ensure a perfect fit in worn or bored cylinders.\n\n- High-Tech Machining: Manufactured using state-of-the-art CNC technology and diamond tooling for exact tolerances and specific surface finishes.\n\n- Dual-Layer Coating: Features a Molybdenum Bisulphite black coating to reduce friction and facilitate a smoother engine break-in period.\n\n- Phosphate Coating: Includes an all-over Phosphate coating inspired by Formula One technology, providing increased surface hardness and superior adhesion for the Molybdenum layer to ensure long-lasting durability.\n\n- Quality Assured: Every piston undergoes a comprehensive manual and automatic quality control process to ensure consistent, race-ready quality.\n\n### Performance and Reliability\n\nBy utilizing cutting-edge material science and sophisticated manufacturing techniques, Vertex provides a piston that minimizes wear and maximizes power output. The combination of friction-reducing coatings and high-strength alloys makes this piston an ideal choice for riders who demand longevity and consistent performance from their motorcycle engine.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-125-1997-oversize-050mm-5445mm-single-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/f0f9bf99c295:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/f0f9bf99c295:1"}},"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."]}}