{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f84b8ee52d90","name":"PISTON KIT YFZ450/R/X 95.00 B, WOSSNER 8601DB FORGED KIT","sku":"56-W4865+00B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"Wossner 8601DB forged piston kit features a 95.01mm bore and is designed for Yamaha YFZ450 models. Manufactured in Germany, this piston offers durability and consistent performance through superior heat transfer and an elliptical profile that minimizes localized pressure during thermal expansion. Features include forged piston construction for strength and reliability, efficient heat dissipation, an elliptical shape for uniform bearing surface under thermal expansion, and reduced risk of piston collapse and uneven pressure. Specifications include a bore of 95.01 mm, actual bore diameter of 94.96 mm, displacement of 449 cm&sup3;, hub stroke of 62.00 mm, clearance of 0.05 mm, compression height of 25.00 mm, dome volume of -7.40 cm&sup3;, and a compression ratio of OEM (11.90:1). This kit includes piston 8601DB, lock CW20, pin WP038, ring set 950XSY, and rod P4029. The part number is 56-W4865+00B.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"95mm"},{"label":"Variant Id","value":"256287"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55233_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55233_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55233_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55233_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55233_4.jpg"],"description":"Wossner 8601DB forged piston kit features a 95.01mm bore and is designed for Yamaha YFZ450 models. Manufactured in Germany, this piston offers durability and consistent performance through superior heat transfer and an elliptical profile that minimizes localized pressure during thermal expansion. Features include forged piston construction for strength and reliability, efficient heat dissipation, an elliptical shape for uniform bearing surface under thermal expansion, and reduced risk of piston collapse and uneven pressure. Specifications include a bore of 95.01 mm, actual bore diameter of 94.96 mm, displacement of 449 cm&sup3;, hub stroke of 62.00 mm, clearance of 0.05 mm, compression height of 25.00 mm, dome volume of -7.40 cm&sup3;, and a compression ratio of OEM (11.90:1). This kit includes piston 8601DB, lock CW20, pin WP038, ring set 950XSY, and rod P4029. The part number is 56-W4865+00B.WO.","descriptionMarkdown":"### Wossner Forged Piston Kit for Yamaha YFZ450\n\n\tEnhance your Yamaha YFZ450's performance and durability with this Wossner 8601DB forged piston kit. Expertly designed and manufactured in Germany, this kit ensures consistent power delivery and exceptional longevity for your engine.\n\n### Key Features\n\n\t\n- Forged Piston Construction: Provides superior strength and reliability compared to cast pistons, handling higher stresses and temperatures.\n\t\n- Optimized Heat Dissipation: Engineered for efficient transfer of heat from the combustion chamber to the cylinder walls, reducing operational temperatures.\n\t\n- Elliptical Profile Design: This advanced shape promotes a uniform bearing surface as the piston expands under thermal load, minimizing localized pressure and wear.\n\t\n- Reduced Risk of Piston Collapse: The intelligent design helps prevent piston collapse and uneven pressure distribution, contributing to engine health.\n\t\n- German Engineering: Manufactured to exacting standards in Germany, guaranteeing high quality and performance.\n\n### Specifications\n\n\t\n- Bore Size: 95.01 mm\n\t\n- Actual Bore Diameter: 94.96 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-9500-b-wossner-8601db-forged-kit","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/f84b8ee52d90:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/f84b8ee52d90:1"}},"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."]}}