{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e9b851d1466c","name":"PISTON KIT 76-82 YZ125 57.00, FORGED WOSSNER 8115D100","sku":"56-W435+100.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 for Yamaha YZ125 models from 1976 to 1982. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse. Features include forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for a uniform bearing surface and reduced wear. Designed for 2-stroke engines. Specifications include a bore size of 57.00 mm, actual bore of 56.94 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;. Wossner part number 8115D100.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"57mm"},{"label":"Variant Id","value":"255587"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W435_2B100_2EWO/68e11bbf8ea99cb6.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W435_2B100_2EWO/68e11bbf8ea99cb6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W435_2B100_2EWO/cdd109781770ea63.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W435_2B100_2EWO/4ffd777c0f57bad6.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W435_2B100_2EWO/53f2303690299278.jpg"],"description":"Wossner forged piston kit for Yamaha YZ125 models from 1976 to 1982. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse. Features include forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for a uniform bearing surface and reduced wear. Designed for 2-stroke engines. Specifications include a bore size of 57.00 mm, actual bore of 56.94 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;. Wossner part number 8115D100.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YZ125\n\nEnhance the performance and durability of your Yamaha YZ125 with this premium forged piston kit from Wossner. Engineered and manufactured in Germany, this piston is designed to withstand the demanding conditions of 2-stroke engines, offering superior strength and optimal heat transfer for improved power output.\n\nThe piston features an innovative elliptical design, which promotes even load distribution across the bearing surface. This reduces localized pressure points, minimizing wear and preventing piston collapse for extended engine life.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides exceptional strength and durability for high-performance applications.\n\t\n- Optimized Heat Transfer: Ensures efficient dissipation of heat, contributing to consistent performance.\n\t\n- Elliptical Design: Creates a uniform bearing surface, reducing wear and enhancing reliability.\n\t\n- 2-Stroke Specific: Tailored for the unique requirements of 2-stroke engines.\n\t\n- German Engineering: Manufactured to exacting standards in Germany.\n\n#### Specifications:\n\n\t\n- Bore Size: 57.00 mm\n\t\n- Actual Bore: 56.94 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 equivalent)\n\t\n- Displacement: 123 cm&sup3;\n\n#### Cross-Reference Information:\n\n\t\n- Wossner Part Number: 8115D100\n\t\n- Lock P/N: CW16\n\t\n- Pin P/N: WP036\n\t\n- Ring Set P/N: RSB5700","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-yz125-5700-forged-wossner-8115d100","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e9b851d1466c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e9b851d1466c: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."]}}