{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"da4f8baca497","name":"PISTON KIT XR XLR 500 89.50, FORGED WOSSNER 8642D050","sku":"56-W310+050","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"Wossner forged piston kit with an 89.50mm bore (89.44mm) for superior strength and heat transfer efficiency, ensuring optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Features include a forged piston for increased strength and durability, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface under heat expansion. Specifications: Bore Size 89.50mm (89.44mm), Compression Ratio 9.0:1, Part Number 8642D050, Lock Part Number CW21, Pin Part Number WP034, Ring Set Part Number 895XSY, Displacement 398 cm&sup3;, Stroke 64.00mm, Clearance 0.06mm, OEM Compression Ratio 8.6:1, Dome Volume +0.00 cm&sup3;, Compression Height 29.70mm.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"89.5mm"},{"label":"Variant Id","value":"255374"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54320_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54320_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54320_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54320_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54320_4.jpg"],"description":"Wossner forged piston kit with an 89.50mm bore (89.44mm) for superior strength and heat transfer efficiency, ensuring optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Features include a forged piston for increased strength and durability, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface under heat expansion. Specifications: Bore Size 89.50mm (89.44mm), Compression Ratio 9.0:1, Part Number 8642D050, Lock Part Number CW21, Pin Part Number WP034, Ring Set Part Number 895XSY, Displacement 398 cm&sup3;, Stroke 64.00mm, Clearance 0.06mm, OEM Compression Ratio 8.6:1, Dome Volume +0.00 cm&sup3;, Compression Height 29.70mm.","descriptionMarkdown":"### Wossner Forged Piston Kit - 89.50mm Bore\n\nUpgrade your motorcycle's performance and durability with this premium Wossner forged piston kit. Engineered for superior strength and efficient heat transfer, this piston is designed to optimize combustion performance and withstand demanding conditions.\n\nThe innovative elliptical design of this piston ensures that thrust loads are distributed evenly across the bearing surface, even under extreme heat expansion. This intelligent engineering helps prevent localized pressure points and guards against piston collapse, ensuring a longer lifespan and consistent performance.\n\nManufactured in Germany, Wossner pistons are renowned for their quality and precision engineering. This kit is an ideal choice for enthusiasts seeking enhanced power and reliability.\n\n### Key Features:\n\n\t\n- Forged Construction: Offers significantly increased strength and durability compared to cast pistons.\n\t\n- Optimized Heat Transfer: Promotes improved combustion efficiency and performance.\n\t\n- Elliptical Design: Guarantees a uniform bearing surface under varying temperatures and prevents piston collapse.\n\t\n- Even Thrust Load Distribution: Reduces wear and tear by spreading forces consistently.\n\t\n- High-Quality Manufacturing: Proudly made in Germany for exceptional standards.\n\n### Specifications:\n\n\t\n- Bore Size: 89.50mm (nominal actual 89.44mm)\n\t\n- Compression Ratio: 9.0:1\n\t\n- Piston Part Number: 8642D050\n\t\n- Lock Part Number: CW21\n\t\n- Pin Part Number: WP034\n\t\n- Ring Set Part Number: 895XSY\n\t\n- Displacement: 398 cm&sup3;\n\t\n- Stroke: 64.00mm\n\t\n- Clearance: 0.06mm\n\t\n- OEM Compression Ratio: 8.6:1\n\t\n- Dome Volume: +0.00 cm&sup3;\n\t\n- Compression Height: 29.70mm","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-xr-xlr-500-8950-forged-wossner-8642d050","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/da4f8baca497:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/da4f8baca497:1"}},"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."]}}