{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"af409308806b","name":"PISTON KIT 2000-2005 KAWASAKI ZX12 WOSSNER K8779DA-4","sku":"56-W9815.83.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":841.02,"formatted":"£841.02"},"summary":"Wossner K8779DA-4 forged piston kit with an 83mm bore. Designed for standard replacement on Kawasaki ZX12 models from 2000 to 2005, including turbo applications. Forged in Germany, these pistons feature an elliptical design for efficient heat transfer, structural reliability, and even pressure distribution under thermal expansion, reducing the risk of piston collapse. Specifications include an actual bore of 82.93mm, stroke of 55.40mm, clearance of 0.07mm, and a Wossner compression ratio of 9.80:1. Dome volume is -9.80 cm&sup3;, compression height is 25.00mm, lock part number is CW21, pin part number is WP092, and ring set part number is 830XTY. Cross-reference OEM part numbers include 56-W9815.83.WO and K8779DA-4.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"258801"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9815_2E83_2EWO/50f2cbcb68f0a76a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9815_2E83_2EWO/50f2cbcb68f0a76a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9815_2E83_2EWO/fb17cabc3cd46be2.jpg"],"description":"Wossner K8779DA-4 forged piston kit with an 83mm bore. Designed for standard replacement on Kawasaki ZX12 models from 2000 to 2005, including turbo applications. Forged in Germany, these pistons feature an elliptical design for efficient heat transfer, structural reliability, and even pressure distribution under thermal expansion, reducing the risk of piston collapse. Specifications include an actual bore of 82.93mm, stroke of 55.40mm, clearance of 0.07mm, and a Wossner compression ratio of 9.80:1. Dome volume is -9.80 cm&sup3;, compression height is 25.00mm, lock part number is CW21, pin part number is WP092, and ring set part number is 830XTY. Cross-reference OEM part numbers include 56-W9815.83.WO and K8779DA-4.","descriptionMarkdown":"### Wossner Piston Kit 83mm Bore for Kawasaki ZX12 (2000-2005)\n\nUpgrade your Kawasaki ZX12 engine with this high-performance Wossner piston kit. Featuring an 83mm bore, this kit is designed as a standard replacement for models manufactured between 2000 and 2005, and is also suitable for turbo applications. Forged in Germany, Wossner pistons are renowned for their exceptional durability, efficient heat transfer capabilities, and structural integrity, ensuring reliable performance even under demanding conditions.\n\nThe advanced elliptical design of these pistons ensures consistent pressure distribution and a stable bearing surface, even during thermal expansion. This engineering prevents piston collapse in high-performance engines and minimizes localized stress by distributing thrust loads evenly.\n\n**Key Features:**\n\n\t\n- Forged construction for superior strength and extended lifespan.\n\t\n- Engineered for optimal combustion heat transfer to cylinder walls.\n\t\n- Elliptical profile maintains a consistent bearing surface during thermal expansion.\n\t\n- Ensures even thrust load distribution to reduce localized stress.\n\t\n- Expertly manufactured in Germany for guaranteed quality.\n\n**Specifications:**\n\n\t\n- Bore Size: 83mm (Standard)\n\t\n- Actual Bore: 82.93mm\n\t\n- Display Volume: 1198 / 1257 cm&sup3;\n\t\n- Stroke: 55.40mm\n\t\n- Clearance: 0.07mm\n\t\n- Wossner Compression Ratio: 9.80:1\n\t\n- OEM Compression Ratio: 12.20:1\n\t\n- Dome Volume: -9.80 cm&sup3;\n\t\n- Compression Height: 25.00mm\n\t\n- Lock Part Number: CW21\n\t\n- Pin Part Number: WP092\n\t\n- Ring Set Part Number: 830XTY","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-kit-2000-2005-kawasaki-zx12-wossner-k8779da-4","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/af409308806b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/af409308806b: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."]}}