{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"63d48bd8a9d5","name":"PISTON KIT/4 77.00 COMP 13:1YAMAHA YZF1000 WOSSNER K8752DA-4","sku":"56-W9876.000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":793.43,"formatted":"£793.43"},"summary":"Wossner K8752DA-4 forged piston kit for four-stroke engines. Features include skirt coating, elliptical design for uniform thermal expansion and balanced load distribution, and engineered heat transfer. Bore size is 77.00mm standard with a measured bore of 76.96mm. Display displacement is 998 / 1023 cm&sup3;, stroke is 53.60mm, and clearance is 0.04mm. Compression ratio is 13.5:1, compared to OEM 12.5:1. Dome volume is &ndash;4.70 cm&sup3;, and compression height is 22.80mm. Kit includes four pistons, piston pins, clips, and rings. Manufactured in Germany. Part No. 56-W9876.000.WO. Clip: CW17. Piston Pin: WP0111. Ring Set: 770XAS-2.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77.00mm"},{"label":"Variant Id","value":"259025"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock57971_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock57971_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock57971_2.jpg"],"description":"Wossner K8752DA-4 forged piston kit for four-stroke engines. Features include skirt coating, elliptical design for uniform thermal expansion and balanced load distribution, and engineered heat transfer. Bore size is 77.00mm standard with a measured bore of 76.96mm. Display displacement is 998 / 1023 cm&sup3;, stroke is 53.60mm, and clearance is 0.04mm. Compression ratio is 13.5:1, compared to OEM 12.5:1. Dome volume is &ndash;4.70 cm&sup3;, and compression height is 22.80mm. Kit includes four pistons, piston pins, clips, and rings. Manufactured in Germany. Part No. 56-W9876.000.WO. Clip: CW17. Piston Pin: WP0111. Ring Set: 770XAS-2.","descriptionMarkdown":"### Wossner Forged Piston Kit for High-Performance Engines\n\nEnhance your motorcycle's power and combustion efficiency with the Wossner K8752DA-4 Piston Kit. This premium, standard-size forged piston set is engineered for demanding four-stroke applications, offering a significant upgrade over OEM specifications.\n\n#### Key Features:\n\n\t\n- High-Performance Forged Pistons: Crafted for durability and superior performance, these pistons feature a skirt coating for reduced friction and enhanced longevity.\n\t\n- Optimized Thermal Expansion: The elliptical design promotes uniform heat expansion, ensuring balanced load distribution and consistent performance under stress.\n\t\n- Improved Heat Transfer: Designed to efficiently transfer heat from the combustion chamber to the cylinder walls, contributing to optimal engine operating temperatures.\n\t\n- Increased Compression Ratio: Achieve greater power output with a raised compression ratio of 13.5:1, compared to the OEM 12.5:1.\n\t\n- Complete Kit: Includes everything needed for installation, such as piston pins, clips, and high-quality piston rings.\n\t\n- German Engineering: Manufactured in Germany, guaranteeing precision and quality.\n\n#### Specifications:\n\n\t\n- Bore Size: 77.00mm (Standard)\n\t\n- Measured Bore: 76.96mm\n\t\n- Stroke: 53.60mm\n\t\n- Clearance: 0.04mm\n\t\n- Compression Ratio: 13.5:1\n\t\n- Dome Volume: -4.70 cm&sup3;\n\t\n- Compression Height: 22.80mm\n\t\n- Pistons per Kit: 4","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-kit4-7700-comp-131yamaha-yzf1000-wossner-k8752da-4","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/63d48bd8a9d5:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/63d48bd8a9d5:1"}},"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."]}}