{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"7ef3c246a70e","name":"PISTON KIT4 YAMAHA YZF1000 78.00mm WOSSNER K8752D100-4 COMP 13:1","sku":"56-W9876.100.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":793.43,"formatted":"£793.43"},"summary":"Wossner Piston Kit 78mm Bore. This kit features forged pistons superior in strength and design, engineered for optimal combustion chamber heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, eliminating localized pressure and distributing thrust loads evenly. Made in Germany. Cross reference numbers include WOSSNER FORGED PISTON K8752D100-4, Clip part no CW17, Piston pin WP0111, and Ring set 780XAS-2. Specifications: Display (cm3) 998 / 1023, Hub stroke (mm) 53.60, Clearance (mm) 0.04, Wossner compression Ratio 13.50:1, OEM Compression ratio 12.50:1, Dome volume (cm3) -4.70, Compression height (mm) 22.80. Offers unmatched reliability and performance from high-tech materials, manufactured to exacting standards. Meets or exceeds OEM quality. Direct OEM replacement. Please see image before ordering to avoid mistakes. Weight: 1366g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78.00mm"},{"label":"Variant Id","value":"259026"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9876_2E100_2EWO/7e987e49c5c4f22f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9876_2E100_2EWO/7e987e49c5c4f22f.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9876_2E100_2EWO/f46704fe5eb2c9c8.jpg"],"description":"Wossner Piston Kit 78mm Bore. This kit features forged pistons superior in strength and design, engineered for optimal combustion chamber heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, eliminating localized pressure and distributing thrust loads evenly. Made in Germany. Cross reference numbers include WOSSNER FORGED PISTON K8752D100-4, Clip part no CW17, Piston pin WP0111, and Ring set 780XAS-2. Specifications: Display (cm3) 998 / 1023, Hub stroke (mm) 53.60, Clearance (mm) 0.04, Wossner compression Ratio 13.50:1, OEM Compression ratio 12.50:1, Dome volume (cm3) -4.70, Compression height (mm) 22.80. Offers unmatched reliability and performance from high-tech materials, manufactured to exacting standards. Meets or exceeds OEM quality. Direct OEM replacement. Please see image before ordering to avoid mistakes. Weight: 1366g.","descriptionMarkdown":"### Wossner Piston Kit for Yamaha YZF1000\n\nThis Wossner Piston Kit is engineered for superior strength and performance, designed to optimize combustion chamber heat transfer to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, preventing localized pressure and distributing thrust loads evenly for increased reliability.\n\n### Key Features:\n\n\t\n- Wossner forged pistons offer exceptional strength and advanced design.\n\t\n- Optimized for efficient combustion chamber heat transfer.\n\t\n- Elliptical design provides a more uniform bearing surface during heat expansion, eliminating localized pressure and distributing thrust loads evenly to prevent piston collapse.\n\t\n- Made in Germany to exacting standards.\n\t\n- Unmatched reliability and performance from high-tech materials.\n\t\n- Meets or exceeds OEM quality and serves as a direct OEM replacement.\n\t\n- Provides best value for money.\n\n### Specifications:\n\n\t\n- Bore: 78.00mm\n\t\n- Stroke: 53.60mm\n\t\n- Clearance: 0.04mm\n\t\n- Wossner Compression Ratio: 13.50:1\n\t\n- OEM Compression Ratio: 12.50:1\n\t\n- Dome Volume: -4.70cm3\n\t\n- Compression Height: 22.80mm\n\t\n- Display (cm3): 998 / 1023\n\nThis high-quality replacement part is designed for easy installation. We recommend using a professional if you are unsure.","weightGrams":null,"fitments":[],"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-kit4-yamaha-yzf1000-7800mm-wossner-k8752d100-4-comp-131","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/7ef3c246a70e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/7ef3c246a70e: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. 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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."]}}