{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"2aa814bc7b7e","name":"PISTON KIT GM SPEEDWAY 90.00, WOSSNER 8811DA A","sku":"56-W9841.A","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":300.97,"formatted":"£300.97"},"summary":"Wossner forged piston kit with a 90.00mm bore. This piston is a standard replacement for GM Speedway 499cc engines. Manufactured in Germany, the piston features a forged construction for maximum strength and durability, and an elliptical profile for uniform bearing surface under thermal expansion. Specifications include a bore of 89.92mm, display volume of 499 cm³, stroke of 78.50mm, clearance of 0.08mm, dome volume of +5.60 cm³, and compression height of 22.00mm. Cross-reference OEM part numbers include 56-W9841.A and 8811DA. Pin part number: WP174. Ring set part number: 900ADS-2. Weight: 370g.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"90.00mm"},{"label":"Variant Id","value":"258885"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9841_2EA/8b92f6ac9c221ae5.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9841_2EA/8b92f6ac9c221ae5.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9841_2EA/9a7ad6b534255190.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9841_2EA/679bca288c1dea97.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W9841_2EA/163c18c9d237583b.jpg"],"description":"Wossner forged piston kit with a 90.00mm bore. This piston is a standard replacement for GM Speedway 499cc engines. Manufactured in Germany, the piston features a forged construction for maximum strength and durability, and an elliptical profile for uniform bearing surface under thermal expansion. Specifications include a bore of 89.92mm, display volume of 499 cm³, stroke of 78.50mm, clearance of 0.08mm, dome volume of +5.60 cm³, and compression height of 22.00mm. Cross-reference OEM part numbers include 56-W9841.A and 8811DA. Pin part number: WP174. Ring set part number: 900ADS-2. Weight: 370g.","descriptionMarkdown":"### Wossner Forged Piston Kit 90.00mm - GM Speedway\n\nUpgrade your GM Speedway 499cc engine with this high-performance forged piston kit from Wossner. Engineered in Germany, this piston is designed as a direct replacement, ensuring maximum strength and efficient heat dissipation for reliable performance. The advanced elliptical profile helps to distribute loads evenly, even under extreme heat, minimizing stress and preventing premature failure. This kit is built for durability and optimal combustion efficiency.\n\n**Key Features:**\n\n\t\n- Forged construction for superior strength and longevity.\n\t\n- Optimized design for efficient heat transfer from the combustion chamber to the cylinder walls.\n\t\n- Elliptical piston profile ensures a consistent bearing surface during thermal expansion.\n\t\n- Promotes even distribution of thrust loads, reducing localized pressure points.\n\t\n- Precision manufactured in Germany to exacting standards.\n\n**Specifications:**\n\n\t\n- Standard Bore Size: 90.00mm\n\t\n- Actual Piston Diameter: 89.92mm\n\t\n- Engine Displacement: 499 cm&sup3;\n\t\n- Stroke: 78.50mm\n\t\n- Piston Clearance: 0.08mm\n\t\n- Dome Volume: +5.60 cm&sup3;\n\t\n- Compression Height: 22.00mm\n\n**Included Components:**\n\n\t\n- Piston\n\t\n- Pin Part Number: WP174\n\t\n- Ring Set Part Number: 900ADS-2","weightGrams":null,"fitments":[{"make":"GM","model":"SPEEDWAY 499","cc":null,"notes":null,"years":"2000–2017"},{"make":"GM","model":"SPEEDWAY 500","cc":null,"notes":null,"years":"1990–2015"}],"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-gm-speedway-9000-wossner-8811da-a","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/2aa814bc7b7e:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/2aa814bc7b7e: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."]}}