{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"3d47e1ac2365","name":"PISTON KIT YFZ450/R/X 98.00, WOSSNER 8601D300 FORGED KIT","sku":"56-W4865+300.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":11,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"The Wossner 8601D300 forged piston kit features a 98.00mm bore and is designed for Yamaha YFZ450 models. Manufactured in Germany, this piston offers enhanced heat transfer and strength, with an elliptical shape that provides uniform bearing under expansion and prevents piston collapse under load. Specifications include a 98.00 mm bore, 97.95 mm actual bore diameter, 449 cm³ display, 62.00 mm hub stroke, 0.05 mm clearance, 25.00 mm compression height, -7.40 cm³ dome volume, and an OEM compression ratio of 11.90:1. The kit includes piston, lock CW20, pin WP038, ring set 980XSY, and rod P4029. Part number 56-W4865+300.WO. Weight is 438 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"98mm"},{"label":"Variant Id","value":"256291"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4865_2B300_2EWO/28c750d2ae9bcd77.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4865_2B300_2EWO/28c750d2ae9bcd77.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4865_2B300_2EWO/4e72172515daebdd.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4865_2B300_2EWO/19a16da0e7dec0f1.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4865_2B300_2EWO/e7af7ff07709ef03.jpg"],"description":"The Wossner 8601D300 forged piston kit features a 98.00mm bore and is designed for Yamaha YFZ450 models. Manufactured in Germany, this piston offers enhanced heat transfer and strength, with an elliptical shape that provides uniform bearing under expansion and prevents piston collapse under load. Specifications include a 98.00 mm bore, 97.95 mm actual bore diameter, 449 cm³ display, 62.00 mm hub stroke, 0.05 mm clearance, 25.00 mm compression height, -7.40 cm³ dome volume, and an OEM compression ratio of 11.90:1. The kit includes piston, lock CW20, pin WP038, ring set 980XSY, and rod P4029. Part number 56-W4865+300.WO. Weight is 438 grams.","descriptionMarkdown":"### Wossner 98.00mm Forged Piston Kit for Yamaha YFZ450\n\nEnhance your Yamaha YFZ450's performance and durability with the Wossner 8601D300 forged piston kit. This high-quality piston is engineered for superior strength and optimal heat transfer, ensuring reliable operation under demanding conditions. Manufactured in Germany, Wossner pistons are built to exceed OEM standards.\n\nThe innovative elliptical design of this piston provides a uniform bearing surface, even as the engine expands due to heat. This intelligent design prevents localized pressure points and guards against piston collapse under heavy loads, extending the life of your engine components.\n\n**Key Features:**\n\n\t\n- Forged construction for exceptional strength and longevity.\n\t\n- Optimized for efficient heat transfer to cylinder walls.\n\t\n- Elliptical design ensures even bearing during thermal expansion.\n\t\n- Prevents stress concentration and piston deformation.\n\t\n- Precision manufactured in Germany.\n\n**Specifications:**\n\n\t\n- Bore Size: 98.00 mm\n\t\n- Actual Bore Diameter: 97.95 mm\n\t\n- Displacement: 449 cm&sup3;\n\t\n- Wrist Pin Stroke: 62.00 mm\n\t\n- Piston Clearance: 0.05 mm\n\t\n- Compression Height: 25.00 mm\n\t\n- Dome Volume: -7.40 cm&sup3;\n\t\n- Compression Ratio: OEM (11.90:1)","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-yfz450rx-9800-wossner-8601d300-forged-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/3d47e1ac2365:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/3d47e1ac2365:1"}},"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."]}}