{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"325370d2ef59","name":"PISTON KIT 97-18 MC EC 66.40, PROX 01.7307.B GASGAS","sku":"56-W157.B.PROX","brand":"Pro-X Racing","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":172.22,"formatted":"£172.22"},"summary":"ProX 2-ring Piston Kit, 66.40mm bore. Includes piston, rings, wrist pin, and circlips. Precision machined on CNC equipment using a low-expansion, low-friction piston alloy. Features an OEM-style tin coating for break-in assistance. Nominal size 66.34mm. Part number 01.7307.B.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"66.4mm"},{"label":"Variant Id","value":"254753"}],"image":"https://www.oro2u.com/media/catalog/product/5/6/56-w157-a-prox.jpg","images":["https://www.oro2u.com/media/catalog/product/5/6/56-w157-a-prox.jpg"],"description":"ProX 2-ring Piston Kit, 66.40mm bore. Includes piston, rings, wrist pin, and circlips. Precision machined on CNC equipment using a low-expansion, low-friction piston alloy. Features an OEM-style tin coating for break-in assistance. Nominal size 66.34mm. Part number 01.7307.B.","descriptionMarkdown":"### ProX 2-Ring Piston Kit 66.40mm\n\nThis ProX Piston Kit is designed for optimal performance and durability. Each kit comes ready to install, including the piston rings, wrist pin, and circlips for a complete solution.\n\nProX pistons are manufactured using advanced CNC machinery, ensuring precision in every component. The pistons are constructed from a low-expansion, low-friction alloy, mirroring the materials used by major Japanese engine manufacturers. This high-quality alloy contributes to reliable engine operation and longevity.\n\nTo facilitate a smooth break-in period, this piston features an OEM-style tin coating. This coating helps reduce friction during the initial use of your machine, promoting proper seating of the piston rings.\n\n \n- Precision machined using state-of-the-art CNC equipment.\n \n- Constructed from a low-expansion, low-friction piston alloy.\n \n- Utilizes an OEM-style tin coating for improved break-in.\n \n- Supplied complete with piston rings, wrist pin, and circlips.\n\nFor spare rings, please refer to ProX part number 02.7307. The nominal size for spare rings is 66.34mm.","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EC 250","cc":null,"notes":null,"years":"1997–2019"},{"make":"GAS-GAS","model":"EC R 250","cc":null,"notes":null,"years":"2014–2020"},{"make":"GAS-GAS","model":"MC 250","cc":null,"notes":null,"years":"1997–2019"},{"make":"GAS-GAS","model":"MX 250","cc":null,"notes":null,"years":"1997–2019"},{"make":"GAS-GAS","model":"SM 250","cc":null,"notes":null,"years":"1997–2008"},{"make":"GAS-GAS","model":"XC 250","cc":null,"notes":null,"years":"1997–2019"}],"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-97-18-mc-ec-6640-prox-017307b-gasgas","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/325370d2ef59:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/325370d2ef59:1"}},"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."]}}