{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1978791feffe","name":"KTM SX / EXC 125 1994-1997 GRADE C 54.21mm","sku":"V.2361C","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":178.12,"formatted":"£178.12"},"summary":"Vertex pistons are manufactured using Low-Ex aluminium alloys, silicon charged at 12%, 18%, or 21% depending on application. Pistons are made using gravity cast or hydraulic forging, with material structure refined by heat treatment. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. Vertex also offers a new Phosphate Coating for increased hardness, surface porosity, and superior adhesion and durability. Piston size is 54.21mm.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-exc-125-1994-1997-grade-c-54.21mm-4676-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/ktm-sx-exc-125-1994-1997-grade-c-54.21mm-4676-p.jpg"],"description":"Vertex pistons are manufactured using Low-Ex aluminium alloys, silicon charged at 12%, 18%, or 21% depending on application. Pistons are made using gravity cast or hydraulic forging, with material structure refined by heat treatment. Machining is completed using CNC machines and diamond tools, achieving specific surface finishes. Every Vertex piston undergoes rigorous manual and automatic quality control. Pistons are coated with a special Molybdenum Bisulphite black coating for break-in and friction reduction. Vertex also offers a new Phosphate Coating for increased hardness, surface porosity, and superior adhesion and durability. Piston size is 54.21mm.","descriptionMarkdown":"### Vertex High-Performance Piston - 54.21mm Grade C\n\nEngineered for precision and reliability, this Vertex piston is designed to restore power and performance to your engine. Manufactured using advanced metallurgical techniques, this piston offers the perfect balance of durability and lightweight performance, ensuring consistent output under demanding conditions.\n\n### Advanced Manufacturing Technology\n\nVertex utilizes proprietary Low-Expansion (Low-Ex) silicon-charged aluminium alloys to ensure structural integrity and thermal stability. Each piston blank is created through either gravity casting or hydraulic forging, followed by a sophisticated heat-treatment process in an automated implant. This ensures a refined material structure capable of handling the high stresses of high-performance internal combustion engines.\n\n### Precision Machining and Quality\n\nThe manufacturing process is completed on state-of-the-art CNC machinery utilizing diamond-tipped tooling. This allows for exact tolerances and specific surface finishes tailored to the requirements of your engine. Every piston undergoes rigorous manual and automatic quality control inspections to guarantee premium standards.\n\n### Enhanced Coatings for Longevity\n\nTo ensure optimal performance and engine protection, this piston features dual-layer coating technology:\n\n \n- Molybdenum Bisulphite Coating: A specialized black finish that assists during the critical engine break-in period and significantly reduces friction during operation.\n \n- Phosphate Coating: Borrowing from Formula One engine development, this all-over coating increases surface hardness and adds micro-porosity to the surface. This improves the adhesion of the Molybdenum coating, resulting in twice the coating durability and extended component life.\n\n### Key Features\n\n \n- Grade C 54.21mm sizing for precision fitment\n \n- High-strength, low-expansion alloy construction\n \n- CNC machined for exact tolerances\n \n- Friction-reducing Molybdenum Bisulphite surface treatment\n \n- Phosphate coating for superior durability and wear resistance","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/ktm-sx-exc-125-1994-1997-grade-c-5421mm","buyOneNow":null,"basketWithThis":null}},"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."]}}