{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"43c297890551","name":"PISTON KIT B 78MM KTM SX-F/XC-F 250 16-22, ATHENA S5F07800002B","sku":"56-W265.B.ATH","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":166.55,"formatted":"£166.55"},"summary":"Forged Piston Kit B 78mm for Athena and OE Cylinders. Bore Diameter: 77.97 mm. Compression Height: 19.50 mm. Compression Ratio: 14.4:1. Displacement: 250 cc. Big End Pin Diameter: 16x9x38.2 mm. Piston Pin Type: Standard. Number Of Segments: 2. Net Weight: 0.19 Kg. This kit contains the piston, pin, circlips, and piston rings. Rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride). Athena pistons are made from a special high-performance aluminum alloy with high silicon content. Some pistons feature a molybdenum disulfide coating on the skirts to reduce friction. Engineered in Italy.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"289763"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W265_2EB_2EATH/cb1b83cf92ae30da.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W265_2EB_2EATH/cb1b83cf92ae30da.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W265_2EB_2EATH/c0f7c0036bfc1b05.jpg"],"description":"Forged Piston Kit B 78mm for Athena and OE Cylinders. Bore Diameter: 77.97 mm. Compression Height: 19.50 mm. Compression Ratio: 14.4:1. Displacement: 250 cc. Big End Pin Diameter: 16x9x38.2 mm. Piston Pin Type: Standard. Number Of Segments: 2. Net Weight: 0.19 Kg. This kit contains the piston, pin, circlips, and piston rings. Rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride). Athena pistons are made from a special high-performance aluminum alloy with high silicon content. Some pistons feature a molybdenum disulfide coating on the skirts to reduce friction. Engineered in Italy.","descriptionMarkdown":"### Athena Forged Piston Kit - Enhance Your Off-Road Performance\n\nUpgrade your motorcycle's engine with the Athena Forged Piston Kit, engineered for superior performance and durability in demanding off-road conditions. Crafted by Athena, a leader in motorcycle spare parts for over 40 years, this piston kit is manufactured using advanced reverse extrusion and cutting-edge CNC machining tools, ensuring exceptional dimensional accuracy.\n\nMade from a special high-performance aluminum alloy with a high silicon content, these pistons offer reliability comparable to Original Equipment (OE) pistons while delivering enhanced resistance and performance. The perfectly smooth profile promotes optimal airflow and efficient flame propagation for improved combustion. Some piston skirts feature a molybdenum disulfide coating applied via screen printing, further reducing friction for increased performance and longevity.\n\nAthena pistons are meticulously engineered in Italy and rigorously tested on engine dynamometer benches and on the track to validate their performance even under extreme stress. This piston kit includes the piston, pin, circlips, and piston rings, all designed for interchangeability and replacement.\n\nThe included piston rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to maximize durability and maintain optimal cylinder liner contact, even at low tangential loads, leading to reduced friction and higher performance.\n\n**Key Features:**\n\n \n- Piston Type: Forged\n \n- Bore Diameter: 77.97 mm\n \n- Compression Height: 19.50 mm\n \n- Compression Ratio: 14.4:1\n \n- Displacement: 250 cc\n \n- Number of Segments: 2\n \n- Piston Pin Type: Standard\n \n- Big End Pin Diameter: 16x9x38.2 mm\n \n- Kit Includes: Piston, pin, circlips, and piston rings\n \n- Material: High-performance aluminum alloy with high silicon content\n \n- Coating: Some skirts feature a molybdenum disulfide coating for reduced friction\n \n- Rings: Made in Japan with wear-resistant coatings (PVD or chromium nitride)\n \n- Weight: 0.19 Kg (Net)\n\n_Please note: Products intended for competitive sports use or high-performance applications may have limited warranty coverage unless a clear defect is present. Athena assumes no responsibility for any use of the product contrary to national regulations._","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EX F 250","cc":null,"notes":null,"years":"2021–2023"},{"make":"GAS-GAS","model":"MC F 250","cc":null,"notes":null,"years":"2021–2023"},{"make":"HUSQVARNA","model":"FC 250","cc":null,"notes":null,"years":"2016–2022"},{"make":"HUSQVARNA","model":"FE 250","cc":null,"notes":null,"years":"2016–2019"},{"make":"KTM","model":"250 EXC-F","cc":null,"notes":null,"years":"2016–2019"},{"make":"KTM","model":"250 SX-F","cc":null,"notes":null,"years":"2016–2022"},{"make":"KTM","model":"250 XC-F","cc":null,"notes":null,"years":"2016–2021"}],"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-b-78mm-ktm-sx-fxc-f-250-16-22-athena-s5f07800002b","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/43c297890551:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/43c297890551:1"}},"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."]}}