{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"c33041d45a0a","name":"PISTON KIT 85-87 YZ80 48.50, WOSSNER 8186D050 YAMAHA MX","sku":"56-W520+050.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":90.61,"formatted":"£90.61"},"summary":"Wossner 8186D050 forged piston kit for Yamaha YZ80 1985-1987. Features a 48.50 mm bore and 48.45 mm actual piston diameter. Manufactured in Germany, this piston has an elliptical design for consistent bearing surface and uniform load distribution, promoting even thrust load distribution and reducing localized pressure to prevent piston collapse. Engineered for effective combustion heat transfer. Specifications include 82 cm³ displacement, 45.60 mm stroke, 0.05 mm clearance, 26.80 mm compression height, and 2-stroke compression ratios. Includes lock part number CW12, pin part number WP091, and ring set part number RSB4850. Alternate part number 56-W520+050.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"48.5mm"},{"label":"Variant Id","value":"256676"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55622_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55622_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55622_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55622_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55622_4.jpg"],"description":"Wossner 8186D050 forged piston kit for Yamaha YZ80 1985-1987. Features a 48.50 mm bore and 48.45 mm actual piston diameter. Manufactured in Germany, this piston has an elliptical design for consistent bearing surface and uniform load distribution, promoting even thrust load distribution and reducing localized pressure to prevent piston collapse. Engineered for effective combustion heat transfer. Specifications include 82 cm³ displacement, 45.60 mm stroke, 0.05 mm clearance, 26.80 mm compression height, and 2-stroke compression ratios. Includes lock part number CW12, pin part number WP091, and ring set part number RSB4850. Alternate part number 56-W520+050.WO.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YZ80 (1985-1987)\n\nUpgrade your Yamaha YZ80's performance with this high-quality Wossner forged piston kit. Engineered for durability and optimal heat transfer, this piston is designed to enhance combustion efficiency and withstand the rigors of off-road riding.\n\nThe advanced elliptical design of the piston ensures a consistent bearing surface, even under the thermal expansion experienced during operation. This feature promotes uniform load distribution, reducing localized pressure and preventing piston collapse for a longer lifespan.\n\n**Key Features:**\n\n\t\n- Forged piston construction for superior strength and durability.\n\t\n- Designed for effective transfer of combustion heat.\n\t\n- Elliptical piston shape allows for uniform load distribution.\n\t\n- Precision manufactured in Germany.\n\n**Specifications:**\n\n\t\n- Bore Size: 48.50 mm\n\t\n- Actual Piston Diameter: 48.45 mm\n\t\n- Displacement: 82 cm&sup3;\n\t\n- Stroke: 45.60 mm\n\t\n- Clearance: 0.05 mm\n\t\n- Compression Height: 26.80 mm\n\t\n- Wossner Compression Ratio: 2-stroke\n\t\n- OEM Compression Ratio: 2-stroke\n\n**Included Components:**\n\n\t\n- Wossner Piston Part Number: 8186D050\n\t\n- Lock Part Number: CW12\n\t\n- Pin Part Number: WP091\n\t\n- Ring Set Part Number: RSB4850","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-85-87-yz80-4850-wossner-8186d050-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/c33041d45a0a:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/c33041d45a0a: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."]}}