{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"379fdc7641e1","name":"PISTON KIT YFM400FW 00-06, FORGED WOSSNER 8901DA 5GH-11631-00-00","sku":"56-W9924.00A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"This Wossner piston kit features a standard 92.00mm bore with a measured diameter of 84.42mm. The forged piston construction offers superior strength and reliability. Its advanced heat transfer design optimizes thermal efficiency and oil distribution from the combustion chamber to the cylinder walls. The elliptical profile promotes a uniform bearing surface under thermal expansion, and even thrust load distribution reduces localized stress and prevents piston collapse. Manufactured in Germany. Specifications include a 92.00mm bore, 84.42mm diameter, 400 cm³ displacement, 70.50 mm stroke, 0.08 mm clearance, 8.50:1 compression ratio (Wossner) / 10.50:1 (OEM), -2.90 cm³ dome volume, 26.90 mm compression height, CW20 clips, WP052 pin, and 845XSY ring set. Cross-reference OEM part numbers include 5GH-11631-00-00 and 40076M08450.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"259192"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock58138_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock58138_1.jpg"],"description":"This Wossner piston kit features a standard 92.00mm bore with a measured diameter of 84.42mm. The forged piston construction offers superior strength and reliability. Its advanced heat transfer design optimizes thermal efficiency and oil distribution from the combustion chamber to the cylinder walls. The elliptical profile promotes a uniform bearing surface under thermal expansion, and even thrust load distribution reduces localized stress and prevents piston collapse. Manufactured in Germany. Specifications include a 92.00mm bore, 84.42mm diameter, 400 cm³ displacement, 70.50 mm stroke, 0.08 mm clearance, 8.50:1 compression ratio (Wossner) / 10.50:1 (OEM), -2.90 cm³ dome volume, 26.90 mm compression height, CW20 clips, WP052 pin, and 845XSY ring set. Cross-reference OEM part numbers include 5GH-11631-00-00 and 40076M08450.","descriptionMarkdown":"### Wossner Forged Piston Kit - Enhance ATV Engine Performance\n\nUpgrade your ATV's engine with this high-performance Wossner forged piston kit. Engineered for durability and optimal thermal efficiency, this piston is designed to deliver superior power and reliability for demanding utility ATV applications.\n\n### Key Features\n\n\t\n- Forged Piston Construction: Provides exceptional strength and resilience, ensuring long-lasting performance under stress.\n\t\n- Advanced Heat Transfer: Designed to efficiently transfer heat from the combustion chamber to the cylinder walls, promoting stable engine temperatures.\n\t\n- Elliptical Profile: Promotes a uniform bearing surface, adapting to thermal expansion for consistent performance.\n\t\n- Even Thrust Load Distribution: Minimizes localized stress and prevents piston collapse, contributing to engine longevity.\n\t\n- German Manufacturing: Built with precision and quality standards synonymous with German engineering.\n\n### Specifications\n\n\t\n- Bore: 92.00mm\n\t\n- Diameter: 84.42mm\n\t\n- Displacement: 400 cm³\n\t\n- Stroke: 70.50 mm\n\t\n- Clearance: 0.08 mm\n\t\n- Compression Ratio (Wossner): 8.50:1\n\t\n- Compression Ratio (OEM): 10.50:1\n\t\n- Dome Volume: -2.90 cm³\n\t\n- Compression Height: 26.90 mm\n\t\n- Clips Part Number: CW20\n\t\n- Pin Part Number: WP052\n\t\n- Ring Set Part Number: 845XSY","weightGrams":null,"fitments":[{"make":"YAMAHA","model":"YFM GRIZZLY 400","cc":null,"notes":null,"years":"2008"},{"make":"YAMAHA","model":"YFM KODIAK 400","cc":null,"notes":null,"years":"2000–2008"}],"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-yfm400fw-00-06-forged-wossner-8901da-5gh-11631-00-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/379fdc7641e1:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/379fdc7641e1:1"}},"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."]}}