{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"446f920a19bc","name":"PISTON KIT 12-13 YZF250 77.00, PROX 01.2412.B, 3-RING","sku":"56-W108.00B.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":188.28,"formatted":"£188.28"},"summary":"ProX Piston Kit 77.00 mm Bore STD Compression 13.5:1. This 3-ring piston kit is ready to install and supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest CNC equipment and use a low-expansion, low-friction piston alloy. The kit uses an OEM style tin coating to assist the break-in process. Replacement parts include ProX ring set 02.2402, ProX pin 04.1641.9, and ProX clips 05.1612C. SKU 56-W108.00B.PX, Manufacturer Part Number 01.2412.B.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"254544"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock53490_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock53490_1.jpg"],"description":"ProX Piston Kit 77.00 mm Bore STD Compression 13.5:1. This 3-ring piston kit is ready to install and supplied complete with piston rings, wrist pin, and circlips. ProX pistons are precision machined on the latest CNC equipment and use a low-expansion, low-friction piston alloy. The kit uses an OEM style tin coating to assist the break-in process. Replacement parts include ProX ring set 02.2402, ProX pin 04.1641.9, and ProX clips 05.1612C. SKU 56-W108.00B.PX, Manufacturer Part Number 01.2412.B.","descriptionMarkdown":"### ProX Piston Kit - 77.00 mm Bore\n\nThis ProX Piston Kit is designed for optimal performance and durability. It features a 77.00 mm bore and a standard compression ratio of 13.5:1, making it ready for immediate installation.\n\nProX pistons are meticulously crafted using advanced CNC equipment and employ a low-expansion, low-friction piston alloy, mirroring the materials used by major Japanese engine manufacturers. This ensures consistent performance and longevity.\n\nEach ProX Piston Kit includes all necessary components for a complete installation:\n\n \n- Piston rings\n \n- Wrist pin\n \n- Circlips\n\nThe piston is treated with an OEM-style tin coating. This coating aids in the crucial break-in process when your machine is first started, promoting smoother operation and extended component life.\n\n**Key Features:**\n\n \n- Bore Size: 77.00 mm\n \n- Compression Ratio: 13.5:1\n \n- Rings Included: 3-ring design\n \n- Included Components: Piston, rings, wrist pin, and circlips\n \n- Material: Low-expansion, low-friction alloy\n \n- Surface Treatment: OEM-style tin coating for break-in","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YZ 250F","cc":null,"notes":null,"years":"2012–2013"},{"make":"YAMAHA","model":"YZF 250","cc":null,"notes":null,"years":"2012–2013"}],"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-12-13-yzf250-7700-prox-012412b-3-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/446f920a19bc:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/446f920a19bc: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."]}}