{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2f2c1085020b","name":"PISTON KIT 1981 YZ80 49.00mm, FORGED WOSSNER 8184DA 527-11633-00-00","sku":"56-W465+000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":88.94,"formatted":"£88.94"},"summary":"Wossner 49mm Bore Forged Piston Kit (Part No. 8184DA) is designed for the 1981 Yamaha YZ80. This high-performance piston features a high-strength forged construction for durability and optimized heat transfer for improved combustion efficiency. Its elliptical design ensures even thrust load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston is specifically designed for two-stroke applications. Specifications include a bore size of 49mm, actual bore diameter of 48.95mm, displacement of 79cc, stroke of 42.00mm, clearance of 0.05mm, and compression height of 24.20mm. Cross-reference OEM Part Numbers include Lock P/N CW12, Pin P/N WP091, Ring Set P/N RSB4900, and OEM Part Number 527-11633-00-00.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"49mm"},{"label":"Variant Id","value":"255816"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54762_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54762_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54762_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54762_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54762_4.jpg"],"description":"Wossner 49mm Bore Forged Piston Kit (Part No. 8184DA) is designed for the 1981 Yamaha YZ80. This high-performance piston features a high-strength forged construction for durability and optimized heat transfer for improved combustion efficiency. Its elliptical design ensures even thrust load distribution, reducing localized pressure and preventing piston collapse. Manufactured in Germany, this piston is specifically designed for two-stroke applications. Specifications include a bore size of 49mm, actual bore diameter of 48.95mm, displacement of 79cc, stroke of 42.00mm, clearance of 0.05mm, and compression height of 24.20mm. Cross-reference OEM Part Numbers include Lock P/N CW12, Pin P/N WP091, Ring Set P/N RSB4900, and OEM Part Number 527-11633-00-00.","descriptionMarkdown":"### Wossner Forged Piston Kit 49mm Bore for Two-Stroke Engines\n\nEnhance the performance and durability of your motorcycle with the Wossner 49mm Bore Piston Kit. This high-performance forged piston is engineered for demanding two-stroke applications, offering superior strength and efficient operation. Manufactured with precision in Germany, Wossner pistons are built to withstand the rigors of high-performance riding.\n\nThe innovative elliptical design of this piston ensures even load distribution across its surface. This advanced design helps to prevent localized pressure points and reduces the risk of piston collapse under extreme conditions, promoting longer component life and consistent engine performance.\n\n**Key Features:**\n\n\t\n- High-Strength Forged Construction: Crafted from premium materials for exceptional durability and resistance to thermal stress.\n\t\n- Optimized Heat Transfer: Designed to efficiently dissipate heat, leading to improved combustion efficiency and consistent power output.\n\t\n- Elliptical Design: Promotes even thrust load distribution, reducing wear and preventing piston deformation.\n\t\n- Two-Stroke Specific: Engineered and optimized for the unique demands of two-stroke engine technology.\n\t\n- German Engineering: Manufactured in Germany, ensuring top-tier quality and precision.\n\n**Specifications:**\n\n\t\n- Bore Size: 49mm\n\t\n- Actual Bore Diameter: 48.95mm\n\t\n- Compression Height: 24.20mm\n\t\n- Stroke: 42.00mm\n\t\n- Clearance: 0.05mm\n\t\n- Engine Type: Two-stroke\n\t\n- Displacement: 79cc","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-1981-yz80-4900mm-forged-wossner-8184da-527-11633-00-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2f2c1085020b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2f2c1085020b: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."]}}