{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6ac28531b90c","name":"CYLINDER FULL KIT 85MM KTM SX-F/XC-F 250 19-22, ATHENA P400270100025 300CC BIG BORE, (Piston included)","sku":"56-K178.85.CKA","brand":"Athena","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":839.02,"formatted":"£839.02"},"summary":"Athena 300cc Big Bore Cylinder Kit. Increases displacement from 250cc to 300cc. Includes aluminum cylinder with 85 mm steel liner, high-performance forged piston with DLC-coated wrist pin and circlips, complete gasket set with MLS head gasket, and GET Boost electronic module with preloaded 300cc fuel map. Plug-and-play installation, no ECU reflash required. Developed for motocross and enduro applications. Bore Size: 85 mm. Displacement: 300 cc. Cylinder Material: High-silicon aluminum alloy with co-fused steel liner. Piston: Forged aluminum with molybdenum disulfide coating. Wrist Pin: Aerospace-grade steel, DLC-coated. Electronics: GET Boost module with pre-installed map. Gasket Type: Multi-Layer Steel MLS head gasket. Manufacturer: Athena. Part Number: P400270100025.","attributes":[],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/bc7da95424169344.png","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/bc7da95424169344.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/827e0a33a75c4e99.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/710cbf02e568dbbb.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/bff7dce9405343ba.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/6a406c770eda5e23.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/05b4e4b0dc79bc1b.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/cffac0e626e08199.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/22cf6c744ddb5a46.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/9859c67c5b1ea672.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/bb301f0a6866cbd9.png","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-K178_2E85_2ECKA/7b847b4052f9c894.png"],"description":"Athena 300cc Big Bore Cylinder Kit. Increases displacement from 250cc to 300cc. Includes aluminum cylinder with 85 mm steel liner, high-performance forged piston with DLC-coated wrist pin and circlips, complete gasket set with MLS head gasket, and GET Boost electronic module with preloaded 300cc fuel map. Plug-and-play installation, no ECU reflash required. Developed for motocross and enduro applications. Bore Size: 85 mm. Displacement: 300 cc. Cylinder Material: High-silicon aluminum alloy with co-fused steel liner. Piston: Forged aluminum with molybdenum disulfide coating. Wrist Pin: Aerospace-grade steel, DLC-coated. Electronics: GET Boost module with pre-installed map. Gasket Type: Multi-Layer Steel MLS head gasket. Manufacturer: Athena. Part Number: P400270100025.","descriptionMarkdown":"### Athena 300cc Big Bore Cylinder Kit for KTM SX-F/XC-F 250\n\nElevate your motorcycle's performance with the Athena 300cc Big Bore Cylinder Kit. This comprehensive kit is engineered to increase the displacement of your 250cc four-stroke engine to 300cc, delivering significant gains in power and torque. Designed for demanding motocross and enduro applications, this kit ensures a noticeable improvement in your riding experience.\n\n### Key Features:\n\n\t\n- Increased Displacement: Boosts engine capacity from 250cc to 300cc for enhanced performance.\n\t\n- High-Quality Construction: Features an aluminum cylinder with a durable 85mm steel liner.\n\t\n- Performance Piston: Includes a high-performance forged piston with a DLC-coated wrist pin and circlips for superior durability and reduced friction.\n\t\n- Complete Gasket Set: Comes with a full gasket set, including a Multi-Layer Steel (MLS) head gasket for a reliable seal.\n\t\n- GET Boost Electronic Module: Integrates seamlessly with the GET Boost electronic module, featuring a pre-loaded 300cc fuel map.\n\t\n- Plug-and-Play Installation: Designed for straightforward installation without the need for ECU reprogramming.\n\n### Specifications:\n\n\t\n- Manufacturer: Athena\n\t\n- Bore Size: 85 mm\n\t\n- Displacement: 300 cc\n\t\n- Cylinder Material: High-silicon aluminum alloy with a co-fused steel liner.\n\t\n- Piston Coating: Molybdenum disulfide coating for reduced friction.\n\t\n- Wrist Pin: Aerospace-grade steel with DLC coating.\n\t\n- Electronics: Includes GET Boost module with pre-installed fuel map.","weightGrams":null,"fitments":[{"make":"HUSQVARNA","model":"FC 250","cc":null,"notes":null,"years":"2016–2021"},{"make":"HUSQVARNA","model":"FE 250","cc":null,"notes":null,"years":"2017–2019"},{"make":"KTM","model":"250 EXC-F","cc":null,"notes":null,"years":"2017–2019"},{"make":"KTM","model":"250 SX-F","cc":null,"notes":null,"years":"2016–2021"},{"make":"KTM","model":"250 XC-F","cc":null,"notes":null,"years":"2016–2021"}],"collections":[],"links":{"page":"https://www.2brosparts.com/products/cylinder-full-kit-85mm-ktm-sx-fxc-f-250-19-22-athena-p400270100025-300cc-big-bor","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6ac28531b90c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6ac28531b90c: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."]}}