{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6cf9c3eea5d2","name":"HONDA RS 125 2003-2009 GRADE A 53.94mm DOME HEAD .78mm RING","sku":"V.3105A","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":15,"price":{"amount":291.52,"formatted":"£291.52"},"summary":"Vertex pistons are manufactured using exotic aluminium alloys called Low-Ex (low expansion) Silicon charged with 12%, 18% or 21% depending on the application. Vertex pistons are manufactured using either a gravity cast or hydraulic forging process to make the blank parts and then the material structure is refined using a hi-tech Heat Treatment completed in an automatic HT implant with solubilization by quench in hot water. This heat treating process is cutting edge technology for this type of aluminium alloys. The machining process is completed using the latest CNC machines and software as well as the usage of diamond tools. By using this high tech tooling, specific surface finishes can be achieved depending on the final application of the finished piston. Every Vertex piston passes through a rigorous manual and automatic quality control process to insure only the highest quality level. Vertex pistons are coated with a special Molybdenum Bisulphite black coating to aid during piston break in and reducing friction during the work inside the cylinder. Recently, following the latest developments used in Formula One engines, Vertex has introduced a new, all over, Phosphate Coating which has a slight hardness increase combined with a light surface porosity that exhibits superior adhesion qualities of the Molybdenum Coating, extending the coating durability for twice as long. This is a Grade A 53.94mm dome head piston with a 0.78mm ring.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/09-grade-a-53.94mm-dome-head-.78mm-ring-3819-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/09-grade-a-53.94mm-dome-head-.78mm-ring-3819-p.jpg"],"description":"Vertex pistons are manufactured using exotic aluminium alloys called Low-Ex (low expansion) Silicon charged with 12%, 18% or 21% depending on the application. Vertex pistons are manufactured using either a gravity cast or hydraulic forging process to make the blank parts and then the material structure is refined using a hi-tech Heat Treatment completed in an automatic HT implant with solubilization by quench in hot water. This heat treating process is cutting edge technology for this type of aluminium alloys. The machining process is completed using the latest CNC machines and software as well as the usage of diamond tools. By using this high tech tooling, specific surface finishes can be achieved depending on the final application of the finished piston. Every Vertex piston passes through a rigorous manual and automatic quality control process to insure only the highest quality level. Vertex pistons are coated with a special Molybdenum Bisulphite black coating to aid during piston break in and reducing friction during the work inside the cylinder. Recently, following the latest developments used in Formula One engines, Vertex has introduced a new, all over, Phosphate Coating which has a slight hardness increase combined with a light surface porosity that exhibits superior adhesion qualities of the Molybdenum Coating, extending the coating durability for twice as long. This is a Grade A 53.94mm dome head piston with a 0.78mm ring.","descriptionMarkdown":"### Vertex High-Performance Racing Piston\n\nUpgrade your engine with this premium Grade A Vertex piston, engineered for precision and reliability. Designed to meet the demanding standards of professional racing teams, this piston provides the durability and performance necessary for high-output applications. Each unit is crafted to exacting tolerances to ensure optimal engine efficiency and longevity.\n\n### Advanced Manufacturing and Material Quality\n\nVertex utilizes specialized Low-Ex silicon-charged aluminium alloys to manage thermal expansion effectively. Depending on the specific application, these alloys contain 12%, 18%, or 21% silicon. The blanks are produced through advanced gravity casting or hydraulic forging processes, followed by a sophisticated heat treatment in an automatic HT implant. This solubilization quench process refines the material structure to provide exceptional strength under racing conditions.\n\n### Key Features\n\n \n- Precision Machining: Manufactured using state of the art CNC machinery and diamond-tipped tooling to ensure specific surface finishes and perfect dimensions.\n \n- Enhanced Coatings: Features a dual-layer coating system. A Molybdenum Bisulphite black coating reduces friction during the break-in period, while a high-tech Phosphate base coating provides increased surface hardness and superior adhesion.\n \n- Extended Durability: The advanced phosphate coating improves the adhesion of the molybdenum layer, effectively doubling the lifespan and durability of the piston surface.\n \n- Rigorous Quality Control: Every individual piston undergoes both manual and automatic inspection processes to maintain the highest quality standards.\n \n- Race Proven: Trusted by world-class racing teams for consistent performance and engine reliability.\n\n### Technical Specifications\n\n \n- Size: 53.94mm\n \n- Piston Type: Dome Head\n \n- Ring Configuration:.78mm Ring\n \n- Brand: Vertex","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-rs-125-2003-2009-grade-a-5394mm-dome-head-78mm-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6cf9c3eea5d2:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6cf9c3eea5d2:1"}},"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."]}}