{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e195a3e45fae","name":"YAMAHA YZF 250 2008-2013 GRADE B 76.96mm STANDARD COMPRESSION 13.5:1","sku":"V.3391B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":259.12,"formatted":"£259.12"},"summary":"Vertex 23391B piston for Yamaha YZF 250. Grade B. 76.96mm standard compression 13.5:1. Forged from high quality 2618 aluminum alloy. Features Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and reduced wear. Unique piston profiles and compression ratios offered in A, B, C and D sizes for precise cylinder fitment, maximizing performance, reducing blow-by, and lowering oil consumption.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-250-2008-2013-grade-b-76.96mm-standard-compression-13.5-1-1797-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-250-2008-2013-grade-b-76.96mm-standard-compression-13.5-1-1797-p.jpg"],"description":"Vertex 23391B piston for Yamaha YZF 250. Grade B. 76.96mm standard compression 13.5:1. Forged from high quality 2618 aluminum alloy. Features Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and reduced wear. Unique piston profiles and compression ratios offered in A, B, C and D sizes for precise cylinder fitment, maximizing performance, reducing blow-by, and lowering oil consumption.","descriptionMarkdown":"### Vertex Standard Compression Four-Stroke Piston\n\nEnhance the performance and reliability of your engine with this Vertex four-stroke piston. Engineered for riders who demand precision, Vertex pistons are forged from high-quality 2618 aluminum alloy. This advanced material composition provides the strength necessary to withstand the extreme internal pressures and high-performance demands of modern four-stroke engines.\n\n### Key Features\n\n \n- Forged Construction: Manufactured from premium 2618 aluminum alloy for maximum durability and resistance to engine stress.\n \n- MOS2 Skirt Coating: Each piston features a specialized Molybdenum Disulphide (MOS2) coating on the skirt to assist with the break-in process and significantly reduce friction-related wear.\n \n- Precision Sizing: This Grade B piston is specifically machined to exact tolerances, allowing for a perfect cylinder-to-piston fit. This precision sizing helps to maximize engine power while minimizing blow-by and oil consumption.\n \n- Performance Focused: Designed to maintain a standard compression ratio of 13.5:1, ensuring consistent power delivery and engine efficiency.\n\nChoosing the correct piston size is critical for achieving optimal engine performance. By utilizing the specific grading system, Vertex ensures that your engine components function in harmony, providing smoother operation and a longer service life for your top end.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yzf-250-2008-2013-grade-b-7696mm-standard-compression-1351","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e195a3e45fae:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e195a3e45fae: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."]}}