{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"cf51d60d4128","name":"HONDA RS 125 2003-2009 GRADE C 53.96mm DOME HEAD .78mm RING","sku":"V.3105C","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":291.52,"formatted":"£291.52"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon, depending on the application. They are made using gravity cast or hydraulic forging processes, followed by heat treatment in an automatic HT implant with solubilization by quench in hot water. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes for the intended application. Each piston undergoes rigorous manual and automatic 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, light surface porosity, and superior adhesion qualities for enhanced coating durability. This product is 53.96mm with a dome head and a 0.78mm ring.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-rs-125-2003-2009-grade-c-53.96mm-dome-head-.78mm-ring-3820-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-rs-125-2003-2009-grade-c-53.96mm-dome-head-.78mm-ring-3820-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys with 12%, 18%, or 21% silicon, depending on the application. They are made using gravity cast or hydraulic forging processes, followed by heat treatment in an automatic HT implant with solubilization by quench in hot water. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes for the intended application. Each piston undergoes rigorous manual and automatic 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, light surface porosity, and superior adhesion qualities for enhanced coating durability. This product is 53.96mm with a dome head and a 0.78mm ring.","descriptionMarkdown":"### Vertex High Performance Racing Piston\n\nEngineered for maximum performance and reliability, the Vertex Grade C replacement piston is a premium component designed for high-revving racing engines. Trusted by professional race teams for its exceptional durability, this piston is manufactured using advanced aluminium alloys and precision engineering to ensure peak power delivery.\n\n### Key Features and Construction\n\n \n- Advanced Alloy Technology: Manufactured using Low-Ex (low expansion) Silicon-charged aluminium alloys to maintain structural integrity under extreme thermal conditions.\n \n- Precision Manufacturing: Utilizes a combination of gravity casting or hydraulic forging processes, finished with CNC machining and diamond tooling for exact tolerances.\n \n- Advanced Heat Treatment: Undergoes a sophisticated heat treatment process in an automatic implant with hot water quench solubilization to refine the material structure.\n \n- Dual-Layer Coating System: Features a specialized Molybdenum Bisulphite black coating to reduce internal friction and assist during the break-in process.\n \n- Phosphate Coating: Incorporates a Formula One derived phosphate coating that provides increased surface hardness and superior adhesion for the Molybdenum layer, significantly extending the lifespan of the finish.\n \n- Quality Assurance: Every piston undergoes rigorous manual and automatic quality control inspections to meet the highest standards of racing performance.\n\n### Specifications\n\n \n- Bore Size: 53.96mm\n \n- Piston Type: Dome Head\n \n- Ring Size: 0.78mm\n \n- Grade: C","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-rs-125-2003-2009-grade-c-5396mm-dome-head-78mm-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/cf51d60d4128:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/cf51d60d4128:1"}},"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."]}}