{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"6abe7bba84a4","name":"PISTON KIT XR XLR 500 91.00, FORGED WOSSNER 8642D200","sku":"56-W310+200","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.78,"formatted":"£220.78"},"summary":"Wossner forged piston kit with a 91mm bore (90.94mm) and part number 8642D200. This kit includes lock part number CW21, pin part number WP034, and ring set part number 910XSY. Designed for superior strength and heat transfer efficiency, this piston ensures optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Specifications: Bore Size 91mm (90.94mm), Compression Ratio 9.0:1, Displacement 449 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":"91mm"},{"label":"Variant Id","value":"255380"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W310_2B200/c441cc87db97ab7b.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W310_2B200/c441cc87db97ab7b.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W310_2B200/f41528222b8b216e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W310_2B200/ed8f028252ce0e76.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W310_2B200/6b3cf9cdcb69811b.jpg"],"description":"Wossner forged piston kit with a 91mm bore (90.94mm) and part number 8642D200. This kit includes lock part number CW21, pin part number WP034, and ring set part number 910XSY. Designed for superior strength and heat transfer efficiency, this piston ensures optimal combustion performance. The elliptical design distributes thrust loads evenly, reducing localized pressure and preventing piston collapse. Manufactured in Germany. Specifications: Bore Size 91mm (90.94mm), Compression Ratio 9.0:1, Displacement 449 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 - 91.00mm Bore\n\nUpgrade your engine's performance and durability with this Wossner forged piston kit. Engineered for superior strength, this piston is designed to withstand higher combustion pressures and temperatures compared to cast pistons. Its advanced elliptical design ensures even distribution of thrust loads, which helps prevent localized pressure and reduces the risk of piston collapse, even under extreme operating conditions. Manufactured to exacting standards in Germany, this kit provides optimal combustion efficiency and reliability.\n\n### Key Features:\n\n\t\n- Forged Construction: Provides significantly increased strength and longevity.\n\t\n- Optimized Heat Transfer: Enhances thermal efficiency for improved performance.\n\t\n- Elliptical Piston Design: Promotes a uniform bearing surface as the piston expands with heat, reducing wear.\n\t\n- Even Thrust Load Distribution: Prevents localized stress and reduces the likelihood of piston failure.\n\t\n- German Manufacturing: Ensures high quality and precision engineering.\n\n### Specifications:\n\n\t\n- Bore Size: 91.00mm (actual measurement 90.94mm)\n\t\n- Compression Ratio: 9.0:1\n\t\n- Piston Kit Part Number: 8642D200\n\t\n- Lock Pin Part Number: CW21\n\t\n- Wrist Pin Part Number: WP034\n\t\n- Ring Set Part Number: 910XSY\n\t\n- Displacement: 449 cm&sup3;\n\t\n- Stroke: 64.00mm\n\t\n- Piston Clearance: 0.06mm\n\t\n- Original Equipment Manufacturer (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-500-9100-forged-wossner-8642d200","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/6abe7bba84a4:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/6abe7bba84a4:1"}},"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."]}}