{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"145f82d7c9b7","name":"PISTON KIT 88-92 YZ80 48.00, WOSSNER 8187DA YAMAHA MX, 39K-11611-00-00","sku":"56-W569+000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":88.94,"formatted":"£88.94"},"summary":"Wossner 8187DA piston kit for Yamaha YZ80 models 1988-1992. Features forged construction for high strength and longevity, and an elliptical piston design for uniform load distribution and reduced localised pressure. Designed for efficient heat transfer. Includes all necessary components for engine rebuilding. Specifications: Bore Size 48.00 mm, Actual Bore Diameter 47.95 mm, Stroke 45.60 mm, Display Displacement 82 cm³, Clearance 0.05 mm, Compression Ratio 2-stroke, Compression Height 27.00 mm. Cross-reference OEM part numbers: 39K-11611-00-00, 569M04800. Cross-reference Wossner part numbers: Piston Kit 8187DA, Lock CW12, Pin WP091, Ring Set RSB4800. Manufactured in Germany. Weight 128g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"48.0mm"},{"label":"Variant Id","value":"256905"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55851_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55851_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55851_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55851_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55851_4.jpg"],"description":"Wossner 8187DA piston kit for Yamaha YZ80 models 1988-1992. Features forged construction for high strength and longevity, and an elliptical piston design for uniform load distribution and reduced localised pressure. Designed for efficient heat transfer. Includes all necessary components for engine rebuilding. Specifications: Bore Size 48.00 mm, Actual Bore Diameter 47.95 mm, Stroke 45.60 mm, Display Displacement 82 cm³, Clearance 0.05 mm, Compression Ratio 2-stroke, Compression Height 27.00 mm. Cross-reference OEM part numbers: 39K-11611-00-00, 569M04800. Cross-reference Wossner part numbers: Piston Kit 8187DA, Lock CW12, Pin WP091, Ring Set RSB4800. Manufactured in Germany. Weight 128g.","descriptionMarkdown":"### Wossner 8187DA Piston Kit - 48.00mm Bore\n\nEnhance the performance and durability of your engine with the Wossner 8187DA Piston Kit. Specifically engineered for demanding applications, this kit features a forged piston construction for superior strength and longevity. German precision manufacturing ensures high quality and reliable thermal performance, crucial for maintaining optimal engine function under stress.\n\nThe innovative elliptical piston design is key to its advanced performance. This design allows for even distribution of load during thermal expansion, which significantly reduces localized pressure points. By minimizing these stress concentrations, the Wossner piston effectively prevents piston collapse and deformation, ensuring a longer lifespan for your engine components.\n\nThis comprehensive kit includes all essential parts needed for a professional engine rebuild, offering a complete solution for restoring or upgrading your engine.\n\n### Key Features\n\n- Forged Piston Construction: Delivers exceptional strength, durability, and resistance to wear.\n\n- Efficient Heat Transfer: Designed to effectively transfer heat to cylinder walls, promoting stable engine temperatures.\n\n- Elliptical Piston Profile: Minimizes stress caused by thermal expansion, reducing the risk of engine damage.\n\n- Prevents Piston Failure: Engineered to withstand high loads without deforming or failing.\n\n- Precision German Engineering: Manufactured to the highest standards for reliable performance.\n\n### Specifications\n\n- Bore Size: 48.00 mm\n\n- Actual Bore Diameter: 47.95 mm\n\n- Stroke: 45.60 mm\n\n- Displacement: 82 cm&sup3;\n\n- Clearance: 0.05 mm\n\n- Compression Ratio: 2-stroke (Wossner and OEM)\n\n- Compression Height: 27.00 mm\n\n### Cross-Reference Information\n\n**OEM Part Numbers:**\n\n- 39K-11611-00-00\n\n- 569M04800\n\n**Wossner Part Components:**\n\n- Piston Kit: 8187DA\n\n- Lock: CW12\n\n- Pin: WP091\n\n- Ring Set: RSB4800","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-88-92-yz80-4800-wossner-8187da-yamaha-mx-39k-11611-00-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/145f82d7c9b7:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/145f82d7c9b7:1"}},"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."]}}