{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d5bff4a40f5d","name":"PISTON KIT 99-25 YZ250 66.40 C, PROX 01.2321.D RM250 03-12","sku":"56-W742.D.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":155.9,"formatted":"£155.90"},"summary":"ProX Piston Kit with a 66.40mm bore. This kit features a low-expansion, low-friction piston alloy, identical to that used by major Japanese engine manufacturers. ProX pistons are precision machined using state-of-the-art CNC equipment. Most ProX pistons include a coating designed to assist in the wear-in process and reduce friction after wear-in, increasing performance. The piston size is 66.38mm. Part number 01.2321.D.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.40mm"},{"label":"Variant Id","value":"257600"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2ED_2EPX/a0679fa155493aec.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W742_2ED_2EPX/a0679fa155493aec.jpg"],"description":"ProX Piston Kit with a 66.40mm bore. This kit features a low-expansion, low-friction piston alloy, identical to that used by major Japanese engine manufacturers. ProX pistons are precision machined using state-of-the-art CNC equipment. Most ProX pistons include a coating designed to assist in the wear-in process and reduce friction after wear-in, increasing performance. The piston size is 66.38mm. Part number 01.2321.D.","descriptionMarkdown":"### ProX Piston Kit 66.40mm Bore\n\nThis ProX Piston Kit is designed for optimal performance and longevity, featuring a 66.40mm bore size. The piston itself measures 66.38mm, ensuring a precise fit. Crafted using state-of-the-art CNC equipment, ProX pistons utilize the same advanced low-expansion, low-friction alloy trusted by major Japanese engine manufacturers. This kit provides a high-quality replacement for your original piston.\n\n#### Key Features:\n\n- Precision machined with advanced CNC equipment.\n\n- Utilizes a low-expansion, low-friction piston alloy, same as used by major Japanese engine manufacturers.\n\n- Coated for ultimate performance: Features OEM style Tin coating to aid the initial wear-in process.\n\n- New skirt coating developed to assist wear-in and reduce friction post wear-in.\n\n- Black coating is a proprietary mix of materials designed to increase performance.","weightGrams":null,"fitments":[{"make":"FANTIC","model":"XX 250","cc":null,"notes":null,"years":"2022–2025"},{"make":"SUZUKI","model":"RM 250","cc":null,"notes":null,"years":"2003–2012"},{"make":"YAMAHA","model":"YZ 250","cc":null,"notes":null,"years":"1999–2025"},{"make":"YAMAHA","model":"YZ 250X","cc":null,"notes":null,"years":"2016–2025"}],"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-99-25-yz250-6640-c-prox-012321d-rm250-03-12","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d5bff4a40f5d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d5bff4a40f5d: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."]}}