{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0c03e1e3ede4","name":"HONDA CRF 250R 2020-2021 GRADE B 78.97mm STANDARD COMPRESSION 13.85:1","sku":"V.4516B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":4,"price":{"amount":251.02,"formatted":"£251.02"},"summary":"Vertex four-stroke pistons are forged from high-quality 2618 aluminum alloy, designed to withstand the demands of modern four-stroke engines. Each piston features a Molybdenum Disulphide (MOS2) coating on the skirt to facilitate break-in and minimize wear. Vertex pistons offer unique profiles and compression ratios in A, B, C, and D sizes, with variations of 0.01mm to ensure a precise fit within the cylinder, optimizing power and performance while reducing blow-by and oil consumption. This specific piston is Grade B, 78.97mm, with a standard compression ratio of 13.85:1.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2020-grade-b-78.97mm-standard-compression-10450-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2020-grade-b-78.97mm-standard-compression-10450-p.jpg"],"description":"Vertex four-stroke pistons are forged from high-quality 2618 aluminum alloy, designed to withstand the demands of modern four-stroke engines. Each piston features a Molybdenum Disulphide (MOS2) coating on the skirt to facilitate break-in and minimize wear. Vertex pistons offer unique profiles and compression ratios in A, B, C, and D sizes, with variations of 0.01mm to ensure a precise fit within the cylinder, optimizing power and performance while reducing blow-by and oil consumption. This specific piston is Grade B, 78.97mm, with a standard compression ratio of 13.85:1.","descriptionMarkdown":"### Vertex High-Performance Four-Stroke Piston\n\nUpgrade your engine's power and reliability with the Vertex four-stroke piston. Engineered for riders who demand precision, this piston is forged from high-quality 2618 aluminum alloy. This material choice ensures superior strength and durability, allowing the component to withstand the high pressures and extreme conditions found in modern high-performance engines.\n\nVertex pistons are designed with specific profiles to ensure an optimal fit. This Grade B piston measures 78.97mm and features a 13.85:1 compression ratio, matching the rigorous standards required for peak engine performance. By maintaining precise tolerances, this piston helps maximize power output while effectively minimizing oil consumption and blow-by.\n\n### Key Features\n\n \n- Advanced Alloy Construction: Forged from 2618 aluminum alloy for exceptional structural integrity under load.\n \n- MOS2 Skirt Coating: Each piston is finished with a Molybdenum Disulphide coating to reduce friction, aid in the break-in process, and minimize long-term wear.\n \n- Precision Engineering: Manufactured to specific sizing standards to ensure the best possible seal within the cylinder.\n \n- Optimized Compression: Engineered to maintain a 13.85:1 compression ratio for reliable power delivery.\n \n- Reduced Blow-by: Precision sizing contributes to improved combustion chamber sealing, leading to enhanced engine efficiency.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-crf-250r-2020-2021-grade-b-7897mm-standard-compression-13851","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0c03e1e3ede4:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0c03e1e3ede4:1"}},"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."]}}