{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2e0e5af34d00","name":"YAMAHA YZF 250 2016-2018 GRADE A 76.95mm STANDARD COMPRESSION 13.5:1","sku":"V.4109A","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":161.92,"formatted":"£161.92"},"summary":"Vertex pistons are forged from 2618 aluminum alloy, suitable for modern four-stroke engines. They feature a Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and wear reduction. Vertex offers unique piston profiles and compression ratios in A, B, C, and D sizes with 0.01mm variations for precise cylinder fitment, maximizing performance and reducing blow-by and oil consumption. This is a Grade A piston with a 76.95mm bore and 13.5:1 compression ratio.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-250-2016-2018-grade-a-76.95mm-standard-compression-13.5-1-6518-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/yamaha-yzf-250-2016-2018-grade-a-76.95mm-standard-compression-13.5-1-6518-p.jpg"],"description":"Vertex pistons are forged from 2618 aluminum alloy, suitable for modern four-stroke engines. They feature a Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and wear reduction. Vertex offers unique piston profiles and compression ratios in A, B, C, and D sizes with 0.01mm variations for precise cylinder fitment, maximizing performance and reducing blow-by and oil consumption. This is a Grade A piston with a 76.95mm bore and 13.5:1 compression ratio.","descriptionMarkdown":"### Vertex High-Performance Four-Stroke Piston\n\nUpgrade your engine reliability and performance with the Vertex Grade A four-stroke piston. Engineered for precision, this piston is designed to meet the demanding requirements of modern high-performance engines, ensuring optimal power delivery and long-term durability.\n\n### Advanced Material Construction\n\nVertex pistons are forged from premium 2618 aluminum alloy. This material choice is specifically engineered to withstand the extreme pressures and heat generated by high-output four-stroke engines. By utilizing this high-grade alloy, the piston maintains structural integrity even under intense racing conditions.\n\n### Features for Enhanced Longevity\n\n- Molybdenum Disulphide (MOS2) Coating: Every piston features a specialized MOS2 coating on the skirt. This advanced coating significantly reduces friction, assists in the engine break-in process, and minimizes wear on both the piston and the cylinder wall.\n\n- Precision Sizing: Vertex offers unique piston profiles and size variations, allowing for a near-perfect fit within your cylinder. This precise clearance is essential for maximizing compression, reducing oil consumption, and eliminating blow-by.\n\n- Optimized Compression: Designed with a 13.5:1 compression ratio, this piston helps restore or enhance the combustion efficiency of your engine, providing a responsive and powerful throttle feel.\n\n- 76.95mm Diameter: Engineered to exact specifications to ensure consistent performance throughout the entire power band.\n\nWhether you are performing a routine engine rebuild or seeking to maintain peak competitive performance, the Vertex four-stroke piston offers the reliability and engineering excellence required to keep your machine running at its best.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/yamaha-yzf-250-2016-2018-grade-a-7695mm-standard-compression-1351","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2e0e5af34d00:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2e0e5af34d00:1"}},"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."]}}