{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"ecaac175a500","name":"HONDA CRF 250R 2018-2019 GRADE A 81.96mm BIG BORE PISTON 13.9:1","sku":"V.4348A","brand":"Vertex","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":291.52,"formatted":"£291.52"},"summary":"Vertex Forged Piston. Grade A. 81.96mm bore. 13.9:1 compression ratio. Forged from 2618 aluminum alloy. Features a T-bridge design inspired by F1 for maximized compression without loss of reliability. Special racing profile. Molybdenum Disulphide (MOS2) coating on the piston skirt aids in break-in and reduces wear. Unique piston profiles and compression ratios offered in A, B, C, and D sizes (0.01mm variation) to perfectly size the piston to the cylinder for maximum power and performance while reducing blow-by and oil consumption.","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":"Vertex Forged Piston. Grade A. 81.96mm bore. 13.9:1 compression ratio. Forged from 2618 aluminum alloy. Features a T-bridge design inspired by F1 for maximized compression without loss of reliability. Special racing profile. Molybdenum Disulphide (MOS2) coating on the piston skirt aids in break-in and reduces wear. Unique piston profiles and compression ratios offered in A, B, C, and D sizes (0.01mm variation) to perfectly size the piston to the cylinder for maximum power and performance while reducing blow-by and oil consumption.","descriptionMarkdown":"### Vertex GP Racers Choice High Compression Big Bore Piston\n\nUpgrade your engine performance with the Vertex GP Racers Choice Big Bore Piston. Engineered for riders who demand maximum power and durability, this piston features an exclusive T-Bridge design inspired by Formula 1 technology. Each piston is precision forged to offer a specialized racing profile that effectively increases compression without sacrificing engine reliability.\n\n### Advanced Engineering and Construction\n\nVertex four-stroke pistons are forged from premium 2618 aluminum alloy, specifically selected to withstand the intense pressures and high heat generated by modern high-performance engines. To ensure superior longevity and a smoother break-in period, every piston skirt is treated with a specialized Molybdenum Disulphide (MOS2) coating. This coating is designed to reduce friction, minimize wear, and enhance overall engine efficiency.\n\n### Key Features\n\n \n- High-Performance Design: Features an F1-inspired T-Bridge for increased structural integrity and performance.\n \n- Premium Material: Forged from high-strength 2618 aluminum alloy for maximum durability under racing conditions.\n \n- Reduced Friction: Integrated Molybdenum Disulphide (MOS2) skirt coating assists in the break-in process and reduces internal engine wear.\n \n- Optimized Compression: Specifically engineered to maximize compression ratios for improved throttle response and power output.\n \n- Precision Sizing: Vertex pistons are manufactured with strict tolerances to ensure a perfect fit, helping to reduce blow-by and oil consumption.\n\nWhether you are competing on the track or looking to improve the output of your four-stroke machine, the Vertex GP Racers Choice piston provides the reliable power delivery needed to stay ahead of the competition.","weightGrams":null,"fitments":[],"collections":[],"links":{"page":"https://www.2brosparts.com/products/honda-crf-250r-2018-2019-grade-a-8196mm-big-bore-piston-1391","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/ecaac175a500:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/ecaac175a500:1"}},"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."]}}