{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"0153a698acb2","name":"PISTON KIT 08-11 YZF250 77.00, PROX 01.2409.C, 3-RING","sku":"56-W4952.C.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":188.28,"formatted":"£188.28"},"summary":"3-ring piston kit with 77.00 mm bore and 13.5:1 standard compression ratio. This kit is ready to install and includes piston rings, wrist pin, and circlips. ProX pistons are precision machined using a low-expansion, low-friction piston alloy, the same used by major Japanese engine manufacturers. The piston features an OEM-style tin coating to aid in the break-in process. Replacement parts include ProX ring set 02.2402, ProX pin 04.1644.4, and ProX clips 05.1612C. This kit is compatible with Yamaha YZF250 YZ250F models from 2008-2009.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"256433"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4952_2EC_2EPX/d801084d7032c0ce.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4952_2EC_2EPX/d801084d7032c0ce.jpg"],"description":"3-ring piston kit with 77.00 mm bore and 13.5:1 standard compression ratio. This kit is ready to install and includes piston rings, wrist pin, and circlips. ProX pistons are precision machined using a low-expansion, low-friction piston alloy, the same used by major Japanese engine manufacturers. The piston features an OEM-style tin coating to aid in the break-in process. Replacement parts include ProX ring set 02.2402, ProX pin 04.1644.4, and ProX clips 05.1612C. This kit is compatible with Yamaha YZF250 YZ250F models from 2008-2009.","descriptionMarkdown":"### ProX 3-Ring Piston Kit\n\nThis ProX Piston Kit is engineered for precision and performance, featuring a 77.00 mm bore size and a standard compression ratio of 13.5:1. Designed for easy installation, each kit includes the piston, piston rings, wrist pin, and circlips, providing a complete solution for your engine rebuild.\n\n**Key Features:**\n\n \n- Precision machined using advanced CNC equipment.\n \n- Constructed from a high-quality, low-expansion, low-friction piston alloy, mirroring that used by major Japanese engine manufacturers.\n \n- Includes an OEM-style tin coating to aid in the crucial break-in process.\n \n- Ready for immediate installation.\n\nThis ProX piston kit ensures reliable performance and durability, offering replacement parts that meet stringent quality standards.","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2008–2011"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2007–2011"}],"collections":[{"name":"Engine","url":"https://www.2brosparts.com/api/agent/collection/GB/engine"},{"name":"Pistons & Kits","url":"https://www.2brosparts.com/api/agent/collection/GB/pistons-kits"}],"links":{"page":"https://www.2brosparts.com/products/piston-kit-08-11-yzf250-7700-prox-012409c-3-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/0153a698acb2:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/0153a698acb2:1"}},"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."]}}