{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"5fb95bf551fd","name":"PISTON 98-00 YZF/WR400F 92 HC, WOSSNER PISTON KIT 8639DA","sku":"56-W199+00A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":177.2,"formatted":"£177.20"},"summary":"Wossner forged piston kit with high compression and performance. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to high-quality standards. Features include high-compression forged piston for enhanced performance, optimized heat transfer for efficient combustion, elliptical design to prevent piston collapse, and German manufacturing. Specifications: Bore Size 92.00mm, Actual Bore Diameter 91.95mm, Displacement 399 cm³, Stroke 60.10mm, Clearance 0.05mm, Wossner Compression Ratio 13.50:1, OEM Compression Ratio 12.50:1, Dome Volume -4.60 cm³, Compression Height 24.10mm. Included components: Lock Part Number CW18, Pin Part Number WP053, Ring Set Part Number 920XSY.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"92mm"},{"label":"Variant Id","value":"254959"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W199_2B00A_2EWO/ec6a05bfae287b9f.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W199_2B00A_2EWO/ec6a05bfae287b9f.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W199_2B00A_2EWO/806acfa2372a020e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W199_2B00A_2EWO/2e386d191625a9af.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W199_2B00A_2EWO/582dedb6d155a221.jpg"],"description":"Wossner forged piston kit with high compression and performance. Engineered for optimal heat transfer to cylinder walls, ensuring efficient combustion. The elliptical design provides a uniform bearing surface under heat expansion, reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to high-quality standards. Features include high-compression forged piston for enhanced performance, optimized heat transfer for efficient combustion, elliptical design to prevent piston collapse, and German manufacturing. Specifications: Bore Size 92.00mm, Actual Bore Diameter 91.95mm, Displacement 399 cm³, Stroke 60.10mm, Clearance 0.05mm, Wossner Compression Ratio 13.50:1, OEM Compression Ratio 12.50:1, Dome Volume -4.60 cm³, Compression Height 24.10mm. Included components: Lock Part Number CW18, Pin Part Number WP053, Ring Set Part Number 920XSY.","descriptionMarkdown":"### Wossner High Compression Forged Piston Kit\n\n Upgrade your motorcycle's performance with this high-compression forged piston kit from Wossner. Engineered for maximum power and efficiency, this piston is designed to optimize heat transfer to the cylinder walls for superior combustion. The innovative elliptical design ensures a uniform bearing surface even under extreme heat expansion, effectively reducing localized pressure and evenly distributing thrust loads to prevent piston collapse. Manufactured in Germany to exacting standards, this Wossner piston kit is built for durability and peak performance.\n\n### Key Features:\n\n \n- High-compression forged piston for enhanced engine performance\n \n- Optimized heat transfer for efficient and powerful combustion\n \n- Elliptical design engineered to prevent piston collapse under load\n \n- Premium quality manufacturing from Germany\n\n### Specifications:\n\n \n- Bore Size: 92.00mm\n \n- Actual Bore Diameter: 91.95mm\n \n- Displacement: 399 cm&sup3;\n \n- Stroke: 60.10mm\n \n- Clearance: 0.05mm\n \n- Wossner Compression Ratio: 13.50:1\n \n- OEM Compression Ratio: 12.50:1\n \n- Dome Volume: -4.60 cm&sup3;\n \n- Compression Height: 24.10mm\n\n### Included Components:\n\n \n- Lock Part Number: CW18\n \n- Pin Part Number: WP053\n \n- Ring Set Part Number: 920XSY","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-98-00-yzfwr400f-92-hc-wossner-piston-kit-8639da","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/5fb95bf551fd:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/5fb95bf551fd: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."]}}