{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"622dcef0bd70","name":"YAMAHA YZ 125 1998-2001 +1.00mm OVERSIZE 54.95mm SINGLE RING PISTON","sku":"V.2520.100","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":194.32,"formatted":"£194.32"},"summary":"Vertex pistons are manufactured using Low-Ex aluminum alloys with 12%, 18% or 21% silicon depending on the application. Pistons are made using gravity casting or hydraulic forging, then refined with a hi-tech heat treatment. This process involves an automatic HT implant with solubilization by quench in hot water. Machining is done with the latest CNC machines, software, and diamond tools to achieve specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Vertex pistons are coated with Molybdenum Bisulphite for break-in and friction reduction. A new Phosphate Coating, used in Formula One engines, offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for extended durability. This piston is 54.95mm with a +1.00mm oversize.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-125-1998-2001-1.00mm-oversize-54.95mm-single-ring-piston-7157-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yz-125-1998-2001-1.00mm-oversize-54.95mm-single-ring-piston-7157-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminum alloys with 12%, 18% or 21% silicon depending on the application. Pistons are made using gravity casting or hydraulic forging, then refined with a hi-tech heat treatment. This process involves an automatic HT implant with solubilization by quench in hot water. Machining is done with the latest CNC machines, software, and diamond tools to achieve specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Vertex pistons are coated with Molybdenum Bisulphite for break-in and friction reduction. A new Phosphate Coating, used in Formula One engines, offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating for extended durability. This piston is 54.95mm with a +1.00mm oversize.","descriptionMarkdown":"### Vertex 54.95mm Oversize Single Ring Piston\n\nRestore your engine performance with this Vertex +1.00mm oversize piston. Engineered for durability and high-performance operation, this piston is precision-machined to exacting standards to ensure optimal compression and longevity for your motorcycle engine.\n\n### Advanced Materials and Engineering\n\nVertex pistons are manufactured using high-quality Low-Ex (low expansion) silicon-charged aluminium alloys, with silicon content tailored to the specific application. The production process utilizes either gravity casting or hydraulic forging, followed by a sophisticated heat treatment in an automated system to refine the material structure and maximize strength.\n\n### Precision Manufacturing\n\nEvery piston is crafted using state-of-the-art CNC machinery and advanced diamond tooling to achieve precise surface finishes. To guarantee consistent quality, each unit undergoes a comprehensive inspection process through both manual and automatic quality control checks.\n\n### Enhanced Surface Coatings\n\nThis piston features industry-leading coating technology designed to reduce friction and improve wear resistance:\n\n \n- Molybdenum Bisulphite Coating: A specialized black coating that assists with the piston break-in process and reduces friction during cylinder operation.\n \n- Phosphate Coating: Drawing on Formula One development, this all-over treatment provides a slight increase in surface hardness and introduces light surface porosity. This creates superior adhesion for the Molybdenum coating, effectively doubling its durability.\n\n### Key Features\n\n \n- 54.95mm diameter (+1.00mm oversize)\n \n- Single ring design for high-performance applications\n \n- Advanced Low-Ex aluminium alloy construction\n \n- High-tech CNC machining with diamond tooling\n \n- Integrated Molybdenum Bisulphite and Phosphate coatings\n \n- Rigorous quality control testing","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yz-125-1998-2001-100mm-oversize-5495mm-single-ring-piston","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/622dcef0bd70:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/622dcef0bd70:1"}},"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."]}}