{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"9a3370de591b","name":"PISTON KIT 08-11 YZF250 77.00, PROX 01.2409.A, 3-RING","sku":"56-W4952.A.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 A Piston KIT 77.00 mm Bore STD Compression 13.5:1. ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest, state of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. Uses an OEM style tin coating to assist the break-in process. Replacement parts: PROX RING SET 02.2402, PROX PIN 04.1644.4, PROX CLIPS 05.1612C. PROX 01.2409.A.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"256431"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55377_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55377_1.jpg"],"description":"3-RING A Piston KIT 77.00 mm Bore STD Compression 13.5:1. ProX Piston Kits are supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest, state of the art CNC equipment and use the same low-expansion, low-friction piston alloy all major Japanese engine manufacturers use. Uses an OEM style tin coating to assist the break-in process. Replacement parts: PROX RING SET 02.2402, PROX PIN 04.1644.4, PROX CLIPS 05.1612C. PROX 01.2409.A.","descriptionMarkdown":"### ProX Piston Kit - 77.00mm Bore, 3-Ring\n\nThis ProX Piston Kit is designed for high-performance and reliability, featuring a 77.00mm bore and a 13.5:1 standard compression ratio. Each kit is ready for installation, including all necessary components for a complete engine rebuild.\n\nProX pistons are manufactured using advanced CNC machinery, employing a low-expansion, low-friction aluminum alloy that is identical to the material used by major Japanese engine manufacturers. This ensures optimal performance and durability.\n\nThe piston features an OEM-style tin coating, which aids in the crucial break-in process of your engine. This coating helps to reduce friction during initial startup, promoting a smoother and more effective break-in period.\n\nThis comprehensive kit includes:\n\n \n- ProX Piston\n \n- Piston Rings (3-ring design)\n \n- Wrist Pin\n \n- Circlips\n\nReplacement parts are available for this kit, including the ProX Ring Set (02.2402), ProX Pin (04.1644.4), and ProX Clips (05.1612C).","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-012409a-3-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/9a3370de591b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/9a3370de591b: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."]}}