{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f9993aff5d0e","name":"PISTON KIT 98-99 YZF400 92.00, FORGED WOSSNER 8603DA, 5GR-11631-00-00","sku":"56-W4649.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":false,"stock":0,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"Wossner 92mm Bore Piston Kit 8603DA. This high-strength forged piston features an elliptical design for even thrust load distribution and optimized heat transfer. Manufactured in Germany, it maintains the OEM compression ratio of 11.0:1 for reliable performance. Specifications include an actual bore diameter of 91.95mm, displacement of 290cc, stroke of 61.20mm, clearance of 0.06mm, dome volume of -4.80cm³, and compression height of 23.00mm. Cross-reference OEM part numbers include lock P/N CW18, pin P/N WP053, ring set P/N 920XSY, and OEM part number 5GR-11631-00-00.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"92mm"},{"label":"Variant Id","value":"255808"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4649_2EA_2EWO/f29d906b7feee53a.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4649_2EA_2EWO/f29d906b7feee53a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4649_2EA_2EWO/7a5583a39c9c1e22.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4649_2EA_2EWO/5dfd43436ca9e299.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4649_2EA_2EWO/dc4558481ece8a9c.jpg"],"description":"Wossner 92mm Bore Piston Kit 8603DA. This high-strength forged piston features an elliptical design for even thrust load distribution and optimized heat transfer. Manufactured in Germany, it maintains the OEM compression ratio of 11.0:1 for reliable performance. Specifications include an actual bore diameter of 91.95mm, displacement of 290cc, stroke of 61.20mm, clearance of 0.06mm, dome volume of -4.80cm³, and compression height of 23.00mm. Cross-reference OEM part numbers include lock P/N CW18, pin P/N WP053, ring set P/N 920XSY, and OEM part number 5GR-11631-00-00.","descriptionMarkdown":"### Wossner Forged Piston Kit 92mm Bore for Yamaha YZF400 WRF400\n\nEnhance your Yamaha YZ400F or WR400F engine with this high-performance Wossner forged piston kit. Engineered for superior strength and durability, this piston kit is designed to optimize engine performance and longevity.\n\n**Key Features:**\n\n\t\n- High-Strength Forged Construction: Built from premium forged materials for exceptional durability and resistance to high temperatures and pressures.\n\t\n- Optimized Heat Transfer: Designed to improve heat transfer within the combustion chamber, contributing to more efficient combustion.\n\t\n- Elliptical Piston Design: Features an elliptical profile to ensure uniform load distribution across the piston surface, reducing localized pressure and preventing premature wear or collapse.\n\t\n- German Engineering: Manufactured in Germany, ensuring high standards of quality and precision.\n\t\n- OEM Compression Ratio: Maintains the original equipment manufacturer's compression ratio for reliable and predictable engine operation.\n\n**Specifications:**\n\n\t\n- Bore Size: 92.00mm\n\t\n- Actual Bore Diameter: 91.95mm\n\t\n- Compression Ratio: OEM\n\t\n- OEM Compression Ratio: 11.0:1\n\t\n- Displacement: 290cc\n\t\n- Stroke: 61.20mm\n\t\n- Clearance: 0.06mm\n\t\n- Dome Volume: -4.80cm&sup3;\n\t\n- Compression Height: 23.00mm\n\n**Included Components:**\n\n\t\n- Lock P/N: CW18\n\t\n- Pin P/N: WP053\n\t\n- Ring Set P/N: 920XSY\n\n**Cross-Reference OEM Part Number:** 5GR-11631-00-00","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"WR 400F","cc":null,"notes":null,"years":"1998–2000"},{"make":"YAMAHA","model":"WRF 400","cc":null,"notes":null,"years":"1998–2000"},{"make":"YAMAHA","model":"YZ 400F","cc":null,"notes":null,"years":"1998–1999"},{"make":"YAMAHA","model":"YZF 400","cc":null,"notes":null,"years":"1998–2000"},{"make":"YAMAHA","model":"YZF 450","cc":null,"notes":null,"years":"1998–1999"}],"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-98-99-yzf400-9200-forged-wossner-8603da-5gr-11631-00-00","buyOneNow":null,"basketWithThis":null}},"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."]}}