{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"36adac20ceea","name":"PISTON KIT 04-07 CRF250R 78 HC, PROX 01.1339.A HI COMP 13.5:1","sku":"56-W4829.A.PXHC","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":202.19,"formatted":"£202.19"},"summary":"PISTON KIT 78.00mm HIGH COMPRESSION 13.5:1. ProX pistons are precision machined on state-of-the-art CNC equipment using a low-expansion, low-friction piston alloy similar to that used by major Japanese engine manufacturers. These piston kits are a high-quality replacement for original pistons in motorcycles, scooters, mopeds, ATVs, and personal watercraft. Many ProX pistons feature an OEM-style tin coating to aid the break-in process and a new skirt coating that reduces friction after break-in. The black coating is made from a blend of materials to increase performance. This kit is a replacement part for PROX RING SET 02.1335.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"256196"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EA_2EPXHC/692b79c78005980f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EA_2EPXHC/692b79c78005980f.jpg"],"description":"PISTON KIT 78.00mm HIGH COMPRESSION 13.5:1. ProX pistons are precision machined on state-of-the-art CNC equipment using a low-expansion, low-friction piston alloy similar to that used by major Japanese engine manufacturers. These piston kits are a high-quality replacement for original pistons in motorcycles, scooters, mopeds, ATVs, and personal watercraft. Many ProX pistons feature an OEM-style tin coating to aid the break-in process and a new skirt coating that reduces friction after break-in. The black coating is made from a blend of materials to increase performance. This kit is a replacement part for PROX RING SET 02.1335.","descriptionMarkdown":"### ProX High Compression Piston Kit - 78mm Bore (13.5:1)\n\nThis ProX Piston Kit features a high compression ratio of 13.5:1 and a bore size of 78.00mm, designed to provide enhanced performance. ProX pistons are manufactured using the latest CNC equipment and utilize the same low-expansion, low-friction piston alloy trusted by major Japanese engine manufacturers. This kit is an excellent choice for replacing the original piston in your powersports vehicle.\n\n**Key Features:**\n\n \n- High Compression Ratio: 13.5:1\n \n- Bore Size: 78.00mm\n \n- Precision Machined: Utilizes state-of-the-art CNC equipment\n \n- Advanced Piston Alloy: Features a low-expansion, low-friction alloy\n \n- Performance Coating: Many ProX pistons come with a special coating. The OEM-style Tin coating aids in the initial wear-in process. A newer skirt coating assists in wear-in and reduces friction after break-in, contributing to increased performance.\n \n- Direct Replacement: A first-class solution to replace original pistons.\n\n**Replacement Part:** PROX RING SET 02.1335","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-78-hc-prox-011339a-hi-comp-1351","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/36adac20ceea:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/36adac20ceea: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."]}}