{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1ce8f49b03bd","name":"PISTON KIT 04-07 CRF250R 78.00, PROX 01.1338.B 04-17 CRF250X","sku":"56-W4829.B.PX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":188.28,"formatted":"£188.28"},"summary":"ProX pistons are precision machined on CNC equipment using a low-expansion, low-friction piston alloy identical to that used by major Japanese engine manufacturers. This Piston Kit is a solution to replace the original piston. Most ProX pistons come with a special coating. OEM style tin coated pistons assist the wear-in process after initial startup. A new skirt coating reduces friction after wear-in, increasing performance. This kit includes: PROX RING SET 02.1335, PROX PISTON PIN 04.1641.5, PROX CLIPS 05.1612. 78.00mm STD compression 12.9:1.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"256198"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EB_2EPX/2f0245e87f646f4e.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EB_2EPX/2f0245e87f646f4e.jpg"],"description":"ProX pistons are precision machined on CNC equipment using a low-expansion, low-friction piston alloy identical to that used by major Japanese engine manufacturers. This Piston Kit is a solution to replace the original piston. Most ProX pistons come with a special coating. OEM style tin coated pistons assist the wear-in process after initial startup. A new skirt coating reduces friction after wear-in, increasing performance. This kit includes: PROX RING SET 02.1335, PROX PISTON PIN 04.1641.5, PROX CLIPS 05.1612. 78.00mm STD compression 12.9:1.","descriptionMarkdown":"### ProX Piston Kit - 78.00mm Standard Compression 12.9:1\n\nEnhance your motorcycle's performance with this high-quality ProX Piston Kit. Precision-machined using the latest CNC equipment, this piston kit is designed to be a premium replacement for your original piston.\n\n**Key Features:**\n\n \n- Diameter: 78.00mm\n \n- Compression Ratio: 12.9:1 (Standard)\n \n- Material: Low-expansion, low-friction piston alloy, the same used by major Japanese engine manufacturers.\n \n- Coated for Ultimate Performance: Features a special skirt coating that assists the break-in process and reduces friction after wear-in, contributing to increased performance.\n \n- OEM Style: Designed as a direct replacement for original pistons.\n\nThis ProX Piston Kit is a first-class solution for restoring or upgrading your engine.\n\n**Replacement Parts Available:**\n\n \n- ProX Ring Set\n \n- ProX Piston Pin\n \n- ProX Clips","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 250R","cc":null,"notes":null,"years":"2004–2009"},{"make":"HONDA","model":"CRF 250X","cc":null,"notes":null,"years":"2004–2017"}],"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-04-07-crf250r-7800-prox-011338b-04-17-crf250x","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1ce8f49b03bd:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1ce8f49b03bd: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."]}}