{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"512063a66861","name":"PISTON KIT 04-07 CRF250R 78 HC, PROX 01.1339.B HI COMP 13.5:1","sku":"56-W4829.B.PXHC","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":202.2,"formatted":"£202.20"},"summary":"PISTON KIT 78.00mm HIGH COMPRESSION 13.5:1. ProX pistons are precision machined on CNC equipment using a low-expansion, low-friction piston alloy. ProX Piston Kits are a first-class solution to replace the original piston. Most ProX pistons come with a coating. OEM style tin coated pistons assist the wear in process. A new skirt coating assists the wear in process and helps reduce friction. The black coating is made from a delicate mix of materials and will increase performance. Replacement part. PROX RING SET 02.1335. Includes piston, rings, pin, and circlips.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"256199"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EB_2EPXHC/692b79c78005980f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4829_2EB_2EPXHC/692b79c78005980f.jpg"],"description":"PISTON KIT 78.00mm HIGH COMPRESSION 13.5:1. ProX pistons are precision machined on CNC equipment using a low-expansion, low-friction piston alloy. ProX Piston Kits are a first-class solution to replace the original piston. Most ProX pistons come with a coating. OEM style tin coated pistons assist the wear in process. A new skirt coating assists the wear in process and helps reduce friction. The black coating is made from a delicate mix of materials and will increase performance. Replacement part. PROX RING SET 02.1335. Includes piston, rings, pin, and circlips.","descriptionMarkdown":"### ProX High Compression Piston Kit - 78.00mm Bore\n\nUpgrade your engine's performance with this ProX High Compression Piston Kit. Designed for precision and durability, this kit features a 78.00mm bore and a 13.5:1 compression ratio, delivering a significant boost in power and responsiveness.\n\nProX pistons are manufactured using state-of-the-art CNC equipment and utilize the same low-expansion, low-friction alloy trusted by major Japanese engine manufacturers. This ensures a perfect fit and exceptional longevity for your motorcycle, scooter, moped, ATV, or personal watercraft.\n\nThis piston kit includes advanced coatings designed to optimize performance and durability:\n\n \n- OEM Style Tin Coating: Aids in the initial wear-in process, ensuring a smooth break-in period.\n \n- New Skirt Coating: Not only assists in wear-in but also significantly reduces friction for increased performance after the initial break-in. This advanced black coating is formulated to enhance overall engine efficiency.\n\n**Key Features:**\n\n \n- Bore Size: 78.00mm\n \n- Compression Ratio: 13.5:1 (High Compression)\n \n- Material: Low-expansion, low-friction alloy\n \n- Manufacturing: Precision CNC machined\n \n- Coating: Includes wear-in and friction-reducing skirt coatings for enhanced performance and longevity.\n \n- Replacement Part: Designed as a high-quality replacement for original pistons.\n\n**Note:** Replacement ring set part number is 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-011339b-hi-comp-1351","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/512063a66861:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/512063a66861:1"}},"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."]}}