{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"4fd67c00bae6","name":"PISTON KIT 85-87 YZ80 49.50, WOSSNER 8186D150 YAMAHA MX","sku":"56-W520+150.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":88.93,"formatted":"£88.93"},"summary":"Wossner piston kit for Yamaha YZ80 models 1985-1987. Features a 49.50 mm bore with an actual piston diameter of 49.45 mm. Forged in Germany for high strength and optimized heat transfer. Elliptical design ensures even load distribution under thermal expansion, reducing localized pressure and preventing piston collapse. Specifications: Bore size 49.50 mm, actual piston diameter 49.45 mm, display (cm³) 82, stroke 45.60 mm, clearance 0.05 mm, compression height 26.80 mm, Wossner compression ratio 2-stroke, OEM compression ratio 2-stroke. Part numbers: Wossner Piston 8186D150, Lock CW12, Pin WP091, Ring Set RSB4950, Alternate 56-W520+150.WO. Weight 148g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"49.5mm"},{"label":"Variant Id","value":"256680"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55626_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55626_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55626_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55626_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55626_4.jpg"],"description":"Wossner piston kit for Yamaha YZ80 models 1985-1987. Features a 49.50 mm bore with an actual piston diameter of 49.45 mm. Forged in Germany for high strength and optimized heat transfer. Elliptical design ensures even load distribution under thermal expansion, reducing localized pressure and preventing piston collapse. Specifications: Bore size 49.50 mm, actual piston diameter 49.45 mm, display (cm³) 82, stroke 45.60 mm, clearance 0.05 mm, compression height 26.80 mm, Wossner compression ratio 2-stroke, OEM compression ratio 2-stroke. Part numbers: Wossner Piston 8186D150, Lock CW12, Pin WP091, Ring Set RSB4950, Alternate 56-W520+150.WO. Weight 148g.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YZ80 (1985-1987)\n\nEnhance the performance and durability of your Yamaha YZ80 with this premium Wossner forged piston kit. Precision engineered in Germany, this kit is designed to meet the demands of high-performance riding.\n\n**Key Features:**\n\n\t\n- Forged piston construction provides superior strength and resilience.\n\t\n- Optimized for efficient heat transfer from the combustion chamber to the cylinder walls, promoting better engine cooling.\n\t\n- Features an elliptical piston design that ensures even load distribution under thermal expansion, minimizing localized pressure and preventing piston collapse.\n\t\n- Manufactured to exacting standards in Germany, ensuring exceptional quality and reliability.\n\n**Specifications:**\n\n\t\n- Bore size: 49.50 mm\n\t\n- Actual piston diameter: 49.45 mm\n\t\n- Displacement (cm³): 82\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: 8186D150\n\t\n- Lock Part Number: CW12\n\t\n- Pin Part Number: WP091\n\t\n- Ring Set Part Number: RSB4950","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-yz80-4950-wossner-8186d150-yamaha-mx","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/4fd67c00bae6:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/4fd67c00bae6:1"}},"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."]}}