{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"1fda0d41f913","name":"PISTON KIT YFM YFB250 71.00, WOSSNER FORGED 8659DA 92-01","sku":"56-W4675+000.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":182.4,"formatted":"£182.40"},"summary":"Wossner 71mm Bore Forged Piston Kit (Part No. 8659DA) 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. Manufactured in Germany, this piston maintains the OEM compression ratio (9.50:1) for reliable engine performance. Specifications include an actual bore diameter of 70.94mm, displacement of 229cc, stroke of 58.00mm, clearance of 0.06mm, dome volume of -4.70cm³, and compression height of 23.80mm. Includes lock P/N: CW16, pin P/N: WP041, and ring set P/N: 710XDS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"71mm"},{"label":"Variant Id","value":"255884"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4675_2B000_2EWO/849b41eaa1b73a1b.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4675_2B000_2EWO/849b41eaa1b73a1b.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4675_2B000_2EWO/9243a4017cf28ee7.jpg"],"description":"Wossner 71mm Bore Forged Piston Kit (Part No. 8659DA) 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. Manufactured in Germany, this piston maintains the OEM compression ratio (9.50:1) for reliable engine performance. Specifications include an actual bore diameter of 70.94mm, displacement of 229cc, stroke of 58.00mm, clearance of 0.06mm, dome volume of -4.70cm³, and compression height of 23.80mm. Includes lock P/N: CW16, pin P/N: WP041, and ring set P/N: 710XDS.","descriptionMarkdown":"### Wossner 71mm Forged Piston Kit for Yamaha 250cc ATVs\n\nEnhance your ATV's performance and durability with the Wossner 71mm Bore Piston Kit (Part No. 8659DA). This high-performance forged piston is meticulously engineered in Germany for demanding applications, offering superior strength and reliability.\n\nDesigned with an elliptical shape, this piston ensures even distribution of thrust loads, minimizing localized pressure and preventing potential piston collapse under stress. Its construction also optimizes heat transfer within the combustion chamber, contributing to improved engine efficiency and longevity. This kit maintains the original equipment manufacturer (OEM) compression ratio for seamless integration and consistent engine operation.\n\n**Key Features:**\n\n \n- Premium forged piston construction for maximum strength\n \n- Engineered elliptical design for balanced load distribution\n \n- Optimized heat transfer for efficient combustion\n \n- Manufactured to exacting standards in Germany\n \n- Maintains OEM compression ratio for reliable performance\n\n**Technical Specifications:**\n\n \n- Bore Size: 71.00mm\n \n- Actual Bore Diameter: 70.94mm\n \n- Compression Ratio: OEM (9.50:1)\n \n- Displacement: 229cc\n \n- Stroke: 58.00mm\n \n- Piston Clearance: 0.06mm\n \n- Dome Volume: -4.70cm&sup3;\n \n- Compression Height: 23.80mm\n\n**Included Components:**\n\n \n- Lock Piston Pin Retainer (Lock P/N: CW16)\n \n- Piston Pin (Pin P/N: WP041)\n \n- Ring Set (Ring Set P/N: 710XDS)","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-yfb250-7100-wossner-forged-8659da-92-01","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/1fda0d41f913:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/1fda0d41f913:1"}},"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."]}}