{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"802419e9c110","name":"HONDA CRF 250R 2020-2021 GRADE B 78.97mm HIGH COMPRESSION 14.4:1","sku":"V.4517B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":291.52,"formatted":"£291.52"},"summary":"Vertex 78.97mm high compression piston. Grade B. 14.4:1 compression ratio. Forged from 2618 aluminum alloy. Features a Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and wear reduction. Unique piston profiles and compression ratios offered in A, B, C, and D sizes, varying by 0.01mm for a precise cylinder fit, maximizing performance and reducing blow-by and oil consumption.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2020-grade-b-78.97mm-high-compression-10454-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2020-grade-b-78.97mm-high-compression-10454-p.jpg"],"description":"Vertex 78.97mm high compression piston. Grade B. 14.4:1 compression ratio. Forged from 2618 aluminum alloy. Features a Molybdenum Disulphide (MOS2) coating on the piston skirt for break-in and wear reduction. Unique piston profiles and compression ratios offered in A, B, C, and D sizes, varying by 0.01mm for a precise cylinder fit, maximizing performance and reducing blow-by and oil consumption.","descriptionMarkdown":"### High Compression Performance Piston\n\nMaximize the power output of your engine with the Vertex high compression piston. Engineered for riders who demand peak performance and reliability, this piston is designed to meet the rigorous demands of modern four-stroke powerplants. By increasing the compression ratio to 14.4:1, this component helps deliver improved throttle response and increased torque throughout the rev range.\n\n### Advanced Engineering and Durability\n\nVertex pistons are forged from premium 2618 aluminum alloy, providing the structural integrity required to withstand the high pressures and extreme internal temperatures of high-performance riding. This forged construction ensures a lighter weight and greater durability compared to cast alternatives, making it an ideal choice for both track and competitive use.\n\n### Key Features\n\n \n- High Compression Ratio: Engineered at 14.4:1 for enhanced power delivery and acceleration.\n \n- Forged Construction: Crafted from high-quality 2618 aluminum alloy for superior strength and fatigue resistance.\n \n- MOS2 Coating: Features a specialized Molybdenum Disulphide coating on the piston skirt to facilitate a smooth break-in process and significantly reduce friction-related wear.\n \n- Precision Sizing: This Grade B piston measures 78.97mm, offering precise tolerances to optimize cylinder sealing, reduce blow-by, and minimize oil consumption.\n \n- Engine Longevity: Designed to maintain peak performance while protecting the internal components of the engine under heavy load.\n\nWhen choosing a replacement piston, the Vertex range offers industry-leading profiles that allow for an exact fit to your cylinder. This level of attention to detail ensures that your engine operates at its maximum potential while maintaining consistent performance over time.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-crf-250r-2020-2021-grade-b-7897mm-high-compression-1441","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/802419e9c110:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/802419e9c110:1"}},"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."]}}