{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0e3c1655e02a","name":"HONDA CRF 250R 2018-2019 GRADE B 81.97mm BIG BORE PISTON 13.9:1","sku":"V.4348B","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":291.52,"formatted":"£291.52"},"summary":"Grade B forged piston with exclusive T-bridge inspired by F1 racing. Special racing profile to maximize compression without loss of reliability. Forged from the highest quality 2618 aluminum alloy. Utilizes a unique Molybdenum Disulphide MOS2 coating on the piston skirt for break-in and reduced wear. Piston sizing available in A, B, C, and D grades for a precise cylinder fit, maximizing power and performance while reducing blow-by and oil consumption. 81.97mm bore size with a 13.9:1 compression ratio.","attributes":[],"image":"https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2018-2019-grade-c-78.98mm-gp-racers-choice-10449-p.jpg","images":["https://www.twsgb.co.uk/Graphics/Std_Product_Images/honda-crf-250r-2018-2019-grade-c-78.98mm-gp-racers-choice-10449-p.jpg"],"description":"Grade B forged piston with exclusive T-bridge inspired by F1 racing. Special racing profile to maximize compression without loss of reliability. Forged from the highest quality 2618 aluminum alloy. Utilizes a unique Molybdenum Disulphide MOS2 coating on the piston skirt for break-in and reduced wear. Piston sizing available in A, B, C, and D grades for a precise cylinder fit, maximizing power and performance while reducing blow-by and oil consumption. 81.97mm bore size with a 13.9:1 compression ratio.","descriptionMarkdown":"### Vertex GP Racers Choice Big Bore Piston\n\nEnhance your engine performance with the Vertex GP Racers Choice Big Bore Piston. Engineered for riders who demand power and reliability, this high-performance component features an exclusive T-bridge design inspired by Formula 1 technology. By utilizing a specialized racing profile, this piston effectively maximizes compression ratios without compromising the longevity of your engine.\n\n### Advanced Materials and Engineering\n\nEach Vertex four-stroke piston is forged from high-quality 2618 aluminum alloy. This material selection ensures the piston can withstand the extreme pressures and high-stress environments found in modern four-stroke engines. To improve the break-in process and minimize long-term friction, the piston skirt is finished with a unique Molybdenum Disulphide (MOS2) coating.\n\n### Key Features\n\n \n- Forged 2618 Aluminum Alloy: Provides superior strength and durability under intense operating conditions.\n \n- GP Racers Choice Profile: Advanced geometry designed to maximize compression and overall power output.\n \n- MOS2 Skirt Coating: Reduces wear and helps the piston seat properly during the initial break-in period.\n \n- Precision Sizing: Manufactured to exacting tolerances to ensure a perfect fit within the cylinder, effectively reducing blow-by and oil consumption.\n \n- Race-Inspired Design: Features an exclusive T-bridge architecture for enhanced structural integrity.\n\nWhether you are competing on the track or pushing your machine to its limits, the Vertex GP Racers Choice piston offers the engineering precision required to maintain peak performance and consistent power delivery.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-crf-250r-2018-2019-grade-b-8197mm-big-bore-piston-1391","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0e3c1655e02a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0e3c1655e02a: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. 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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."]}}