{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4141610daf6e","name":"KAWASAKI KXF 250 2021-2022 GRADE C 77.97mm G.P RACERS CHOICE 15.05:1","sku":"V.4515C","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":356.32,"formatted":"£356.32"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys, silicon charged at 12%, 18%, or 21% depending on the application. They are made using gravity casting or hydraulic forging, with material structure refined by a hi-tech heat treatment process. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes. 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, used in Formula One engines, offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating, doubling durability. This piston is 77.97mm with a 15.05:1 compression ratio.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kxf-250-2020-grade-c-77.97mm-g.p-racers-choice-10539-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/kawasaki-kxf-250-2020-grade-c-77.97mm-g.p-racers-choice-10539-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys, silicon charged at 12%, 18%, or 21% depending on the application. They are made using gravity casting or hydraulic forging, with material structure refined by a hi-tech heat treatment process. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes. 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, used in Formula One engines, offers increased hardness, light surface porosity, and superior adhesion of the Molybdenum Coating, doubling durability. This piston is 77.97mm with a 15.05:1 compression ratio.","descriptionMarkdown":"### Vertex G.P. Racers Choice High Compression Piston\n\nUpgrade your engine performance with the Vertex G.P. Racers Choice piston. Engineered for competitive racing applications, this high compression piston features a 15.05:1 ratio, providing the power and throttle response required for demanding track conditions. Built with precision and durability in mind, Vertex pistons are the preferred choice for riders looking to maximize engine output.\n\n### Advanced Manufacturing and Material Quality\n\nVertex pistons are manufactured using exotic Low-Ex (low expansion) silicon-charged aluminum alloys, with silicon content tailored to the specific application for optimal thermal stability. The blanks are produced through a refined gravity cast or hydraulic forging process, followed by state of the art heat treatment in an automatic HT implant. This process ensures a robust material structure capable of handling the high stresses of performance riding.\n\n### Precision Engineering and Friction Reduction\n\nEvery piston is machined using high precision CNC technology and diamond tooling to achieve exact surface finishes. To ensure longevity and smooth operation, these pistons feature a specialized dual-coating system:\n\n- Molybdenum Bisulphite Coating: A black surface treatment that assists during the critical piston break-in period and significantly reduces internal friction.\n\n- Phosphate Coating: Borrowing technology from Formula One, this coating increases surface hardness and provides light surface porosity. This allows for superior adhesion of the Molybdenum coating, effectively doubling its durability.\n\n### Key Features\n\n- Engineered for high compression racing performance (15.05:1).\n\n- Constructed from high-grade, silicon-charged aluminum alloys.\n\n- Enhanced durability with advanced Molybdenum and Phosphate coatings.\n\n- Rigorously tested through manual and automatic quality control processes.\n\n- Optimized for heat resistance and reduced friction.\n\n- Bore size: 77.97mm (Grade C).","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/kawasaki-kxf-250-2021-2022-grade-c-7797mm-gp-racers-choice-15051","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4141610daf6e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4141610daf6e: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."]}}