{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"932dce2e9241","name":"PISTON KIT 76-82 YZ125 57.50, FORGED WOSSNER 8115D150","sku":"56-W435+150.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":125.68,"formatted":"£125.68"},"summary":"Wossner forged piston kit with part number 8115D150. Manufactured in Germany, this 2-stroke engine piston offers superior strength and heat transfer efficiency due to its forged construction. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse for uniform bearing surface and reduced wear. Specifications include a bore size of 57.50 mm, actual bore of 57.44 mm, stroke of 56.50 mm, clearance of 0.06 mm, compression height of 25.40 mm, dome volume of +6.40 cm&sup3;, compression ratio of 10.50:1 (OEM), and displacement of 123 cm&sup3;. This kit includes lock pin P/N CW16, pin P/N WP036, and ring set P/N RSB5750.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"57.5mm"},{"label":"Variant Id","value":"255589"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54535_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54535_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54535_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54535_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54535_4.jpg"],"description":"Wossner forged piston kit with part number 8115D150. Manufactured in Germany, this 2-stroke engine piston offers superior strength and heat transfer efficiency due to its forged construction. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse for uniform bearing surface and reduced wear. Specifications include a bore size of 57.50 mm, actual bore of 57.44 mm, stroke of 56.50 mm, clearance of 0.06 mm, compression height of 25.40 mm, dome volume of +6.40 cm&sup3;, compression ratio of 10.50:1 (OEM), and displacement of 123 cm&sup3;. This kit includes lock pin P/N CW16, pin P/N WP036, and ring set P/N RSB5750.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YZ125 (1976-1982)\n\nEnhance the performance and durability of your Yamaha YZ125 with this high-quality forged piston kit from Wossner. Manufactured in Germany, this piston is engineered for superior strength and optimized heat transfer, ensuring reliable performance under demanding conditions. The advanced elliptical design promotes even load distribution across the bearing surface, effectively reducing localized pressure and preventing premature wear or piston collapse.\n\n**Key Features:**\n\n\t\n- Forged construction for exceptional durability and strength.\n\t\n- Engineered for optimized heat transfer, contributing to improved engine performance.\n\t\n- Features an elliptical design that ensures a uniform bearing surface and minimizes wear.\n\t\n- Specifically designed for use in 2-stroke engines.\n\n**Specifications:**\n\n\t\n- Bore Size: 57.50 mm\n\t\n- Actual Bore: 57.44 mm\n\t\n- Stroke: 56.50 mm\n\t\n- Clearance: 0.06 mm\n\t\n- Compression Height: 25.40 mm\n\t\n- Dome Volume: +6.40 cm&sup3;\n\t\n- Compression Ratio: 10.50:1 (OEM)\n\t\n- Displacement: 123 cm&sup3;\n\t\n- Proudly Made in Germany\n\n**Wossner Part Number:** 8115D150","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-76-82-yz125-5750-forged-wossner-8115d150","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/932dce2e9241:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/932dce2e9241:1"}},"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."]}}