{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a655d7da8a9e","name":"PISTON KIT YFM YFB250 73.00, WOSSNER FORGED 8659D200","sku":"56-W4675+200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":182.4,"formatted":"£182.40"},"summary":"Wossner 73mm Bore Forged Piston Kit (8659D200) is a high-performance piston designed for Yamaha models. It features a high-strength forged construction, optimized heat transfer for improved combustion efficiency, and an elliptical design for even thrust load distribution, reducing localized pressure. Manufactured in Germany, this piston maintains the OEM compression ratio. Specifications include a bore size of 73mm, actual bore diameter of 72.94mm, OEM compression ratio of 9.50:1, displacement of 229cc, stroke of 58.00mm, clearance of 0.06mm, dome volume of -4.70cm³, and compression height of 23.80mm. Cross-reference OEM part numbers include Lock P/N CW16, Pin P/N WP041, and Ring Set P/N 730XDS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"73mm"},{"label":"Variant Id","value":"255892"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54838_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54838_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54838_2.jpg"],"description":"Wossner 73mm Bore Forged Piston Kit (8659D200) is a high-performance piston designed for Yamaha models. It features a high-strength forged construction, optimized heat transfer for improved combustion efficiency, and an elliptical design for even thrust load distribution, reducing localized pressure. Manufactured in Germany, this piston maintains the OEM compression ratio. Specifications include a bore size of 73mm, actual bore diameter of 72.94mm, OEM compression ratio of 9.50:1, displacement of 229cc, stroke of 58.00mm, clearance of 0.06mm, dome volume of -4.70cm³, and compression height of 23.80mm. Cross-reference OEM part numbers include Lock P/N CW16, Pin P/N WP041, and Ring Set P/N 730XDS.","descriptionMarkdown":"### Wossner Forged Piston Kit - 73.00mm Bore\n\nUpgrade your engine with the Wossner 73mm Bore Piston Kit (Part No. 8659D200). This high-performance forged piston is engineered in Germany to deliver superior strength, durability, and optimized combustion efficiency. Its innovative elliptical design ensures even load distribution across the piston's surface, effectively reducing localized pressure and preventing premature wear or collapse.\n\n**Key Features:**\n\n\t\n- High-strength forged piston construction for maximum reliability.\n\t\n- Advanced design optimizes heat transfer within the combustion chamber for improved performance.\n\t\n- Elliptical piston shape ensures even thrust load distribution, enhancing longevity.\n\t\n- Precision manufactured in Germany to exacting standards.\n\t\n- Maintains the Original Equipment Manufacturer (OEM) compression ratio for seamless integration and reliable engine operation.\n\n**Specifications:**\n\n\t\n- Bore Size: 73mm\n\t\n- Actual Bore Diameter: 72.94mm\n\t\n- Compression Ratio: OEM\n\t\n- OEM Compression Ratio: 9.50:1\n\t\n- Displacement: 229cc\n\t\n- Stroke: 58.00mm\n\t\n- Clearance: 0.06mm\n\t\n- Dome Volume: -4.70cm³\n\t\n- Compression Height: 23.80mm\n\n**Included Components (Part Numbers):**\n\n\t\n- Lock Piston Pin Retainers: CW16\n\t\n- Piston Pin: WP041\n\t\n- Piston Ring Set: 730XDS","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-yfm-yfb250-7300-wossner-forged-8659d200","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a655d7da8a9e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a655d7da8a9e: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."]}}