{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1b3be474febb","name":"PISTON KIT 90MM KTM EXC-F/SX-F/XC-F 350 11-15, ATHENA S4F090000050 365CC BIG BORE","sku":"56-K152.90.PIS","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":208.43,"formatted":"£208.43"},"summary":"Piston kit 89.96mm bore diameter. For Athena Big Bore cylinder. Made from a special high-performance aluminum alloy with high silicon content. Features cutting-edge CNC machining for dimensional tolerances of less than 0.01 mm. Some piston skirts have a molybdenum disulfide coating applied by screen printing to reduce friction and enhance performance and durability. Rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase retention and durability. Kit includes piston, pin, circlips, and piston rings. Big End Pin Diameter 18x10.5x44.5mm. Compression Ratio 13.5:1. Displacement 350cc. Number of Segments 2. Piston Pin Type Standard. Piston Type Forged.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"90mm"},{"label":"Variant Id","value":"252945"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K152_2E90_2EPIS/4af834ea67e43beb.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K152_2E90_2EPIS/4af834ea67e43beb.jpg"],"description":"Piston kit 89.96mm bore diameter. For Athena Big Bore cylinder. Made from a special high-performance aluminum alloy with high silicon content. Features cutting-edge CNC machining for dimensional tolerances of less than 0.01 mm. Some piston skirts have a molybdenum disulfide coating applied by screen printing to reduce friction and enhance performance and durability. Rings are produced in Japan with wear-resistant coatings (PVD or chromium nitride) to increase retention and durability. Kit includes piston, pin, circlips, and piston rings. Big End Pin Diameter 18x10.5x44.5mm. Compression Ratio 13.5:1. Displacement 350cc. Number of Segments 2. Piston Pin Type Standard. Piston Type Forged.","descriptionMarkdown":"### Athena Forged Racing Piston Kit - Big Bore 90mm\n\n This Athena forged racing piston kit is designed for high-performance motorcycle engines.\n Manufactured using advanced reverse extrusion techniques and precision CNC machining,\n these pistons ensure exceptional dimensional accuracy of less than 0.01 mm.\n Crafted from a special high-silicon aluminum alloy, they offer a superior balance of\n reliability, resistance, and performance, meeting or exceeding Original Equipment (OE) standards.\n\n The piston's smooth profile promotes efficient gas flow and optimal flame propagation.\n Some piston skirts feature a molybdenum disulfide coating, applied via screen printing,\n to further reduce friction, thereby enhancing performance and extending durability.\n Each piston is engineered in Italy by the Athena R&D department and undergoes rigorous testing\n on dynamometer benches and in real-world track conditions to validate its performance.\n\n This kit includes a piston, pin, circlips, and piston rings. The piston rings are produced in Japan\n with wear-resistant coatings (PVD or chromium nitride) to improve retention and durability,\n ensuring a perfect fit with the cylinder liner even under low tangential load. All included\n components are replaceable and interchangeable for ease of maintenance.\n\n **Key Features:**\n\n \n- Forged Piston Type\n \n- Big Bore 90mm Diameter (89.96 mm)\n \n- High Performance Aluminum Alloy with High Silicon Content\n \n- Reduced Friction with Molybdenum Disulfide Coating (on some models)\n \n- Precision CNC Machining for Tight Tolerances\n \n- Engineered and Tested for Extreme Conditions\n \n- Includes Piston, Pin, Circlips, and Piston Rings\n \n- Japanese-Made Piston Rings with Wear-Resistant Coatings\n \n- Compression Ratio: 13.5:1\n \n- Number of Segments: 2\n \n- Piston Pin Type: Standard\n \n- Net Weight: 0.35 Kg\n\n **Technical Specifications:**\n\n \n- Big End Pin Diameter: 18x10,5x44,5 mm\n \n- Bore Diameter: 89.96 mm\n \n- Compression Ratio: 13.5:1\n \n- Displacement: 350 cc\n \n- Net Weight: 0.35 Kg\n \n- Number Of Segments: 2\n \n- Piston Pin Type: Standard\n \n- Piston Type: Forged\n\n _Note: Products designed for increased displacement and power may be intended exclusively for competitive use.\n Please adhere to all local regulations regarding vehicle modifications._","weightGrams":null,"fitments":[{"make":"HUSQVARNA","model":"FC 350","cc":null,"notes":null,"years":"2014–2015"},{"make":"HUSQVARNA","model":"FE 350","cc":null,"notes":null,"years":"2014–2016"},{"make":"KTM","model":"350 EXC-F","cc":null,"notes":null,"years":"2012–2016"},{"make":"KTM","model":"350 EXC-F SIX DAYS","cc":null,"notes":null,"years":"2013–2016"},{"make":"KTM","model":"350 FREERIDE","cc":null,"notes":null,"years":"2013–2014"},{"make":"KTM","model":"350 SX-F","cc":null,"notes":null,"years":"2011–2015"},{"make":"KTM","model":"350 XC-F","cc":null,"notes":null,"years":"2011–2015"},{"make":"KTM","model":"350 XCF-W","cc":null,"notes":null,"years":"2012–2016"}],"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-90mm-ktm-exc-fsx-fxc-f-350-11-15-athena-s4f090000050-365cc-big-bore","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1b3be474febb:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1b3be474febb: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."]}}