{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a78af26ce869","name":"PISTON KIT 16-22 SXF250 78 HC WOSSNER 8924DC KTM, HIGH COMPRESSION 79030207000, WOSSNER 8924DC KTM","sku":"56-W265.A.WO.HC","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner 78mm piston kit with high compression. Bore size 77.96mm. Wossner forged pistons are superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part number 56-W265.A.WO.HC. Piston size: 77.96mm. Lock P/N CW16. Pin P/N WP070. Ring Set P/N RIK78.00. Display (cm3) 249. Hub stroke (mm) 52.30. Clearance (mm) 0.05. Wossner compression ratio: 14.50:1. OEM compression ratio: 13.90:1. Dome volume (cm3) -0.94. Compression height (mm) 19.50. Theoretical weight (G) 135.00. Cross reference numbers: 79030207000, 40144M07800.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"255313"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54259_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54259_1.jpg"],"description":"Wossner 78mm piston kit with high compression. Bore size 77.96mm. Wossner forged pistons are superior in strength and design, engineered to provide the best possible path for combustion chamber heat transfer to cylinder walls. Elliptically designed to provide a more uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads more evenly, thereby preventing piston collapse. Made in Germany. Part number 56-W265.A.WO.HC. Piston size: 77.96mm. Lock P/N CW16. Pin P/N WP070. Ring Set P/N RIK78.00. Display (cm3) 249. Hub stroke (mm) 52.30. Clearance (mm) 0.05. Wossner compression ratio: 14.50:1. OEM compression ratio: 13.90:1. Dome volume (cm3) -0.94. Compression height (mm) 19.50. Theoretical weight (G) 135.00. Cross reference numbers: 79030207000, 40144M07800.","descriptionMarkdown":"### Wossner High Compression Piston Kit\n\nThis Wossner Piston Kit is designed for high-performance applications, featuring a high compression ratio for increased power output. Each piston is forged for superior strength and durability, and engineered for optimal heat transfer from the combustion chamber to the cylinder walls.\n\nThe elliptical design ensures a uniform bearing surface even under extreme heat expansion, eliminating localized pressure and distributing thrust loads evenly to prevent piston collapse. Precision manufacturing in Germany guarantees top-tier quality.\n\n### Key Features:\n\n \n- Forged Piston: Superior strength and design for demanding use.\n \n- Optimized Heat Transfer: Engineered for efficient combustion chamber heat management.\n \n- Elliptical Design: Ensures uniform bearing surface and even thrust load distribution.\n \n- High Compression Ratio: Achieves 14.50:1 compression, compared to the OEM 13.90:1.\n \n- Precision Machining: Made in Germany for exceptional quality.\n \n- Piston Diameter: 77.96mm (0.00mm Oversize).\n \n- Compression Height: 19.50mm.\n \n- Dome Volume: -0.94 cm3.\n \n- Theoretical Weight: 135.00g.\n \n- Includes: Lock Piston Pin (CW16), Pin Piston Pin (WP070), and Ring Set (RIK78.00).\n\n**Cross Reference Numbers:** 79030207000, 40144M07800","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-16-22-sxf250-78-hc-wossner-8924dc-ktm-high-compression-79030207000-wo","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a78af26ce869:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a78af26ce869:1"}},"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."]}}