{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"491da4229724","name":"PISTON KIT KTM 400 EXC 89.00, FORGED WOSSNER 8580DC","sku":"56-W4733+00C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner forged piston kit for high-performance applications offering superior strength and optimized heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability. Features forged piston for enhanced strength and durability, optimized heat transfer to cylinder walls for improved performance, and elliptical design for even thrust load distribution. Bore Size: 89.02mm, Actual Bore: 88.96mm, Display (cm³): 398, Stroke (mm): 64.00, Clearance (mm): 0.06, Wossner Compression Ratio: OEM, OEM Compression Ratio: 11.00:1, Dome Volume (cm³): +7.00, Compression Height (mm): 27.50, Lock Part Number: CW20, Pin Part Number: WP038, Ring Set Part Number: 890XSY, Part Number: 56-W4733+00C.WO. Weight: 436 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"89mm"},{"label":"Variant Id","value":"255982"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54928_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54928_1.jpg"],"description":"Wossner forged piston kit for high-performance applications offering superior strength and optimized heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability. Features forged piston for enhanced strength and durability, optimized heat transfer to cylinder walls for improved performance, and elliptical design for even thrust load distribution. Bore Size: 89.02mm, Actual Bore: 88.96mm, Display (cm³): 398, Stroke (mm): 64.00, Clearance (mm): 0.06, Wossner Compression Ratio: OEM, OEM Compression Ratio: 11.00:1, Dome Volume (cm³): +7.00, Compression Height (mm): 27.50, Lock Part Number: CW20, Pin Part Number: WP038, Ring Set Part Number: 890XSY, Part Number: 56-W4733+00C.WO. Weight: 436 grams.","descriptionMarkdown":"### Wossner Forged Piston Kit for High-Performance Engines\n\nElevate your engine's performance and durability with this premium Wossner forged piston kit. Engineered for demanding applications, this kit offers superior strength compared to cast pistons, ensuring reliability under extreme conditions. The advanced design optimizes heat transfer to the cylinder walls, contributing to better engine cooling and overall efficiency.\n\nA key feature of this Wossner piston is its elliptical design. This innovative shape allows for uniform bearing surface under heat expansion. By distributing the thrust load evenly, it effectively reduces localized pressure points, preventing potential piston collapse and extending the life of your engine components. Precision manufactured in Germany, this piston kit embodies quality and cutting-edge engineering.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides exceptional strength and resistance to wear for enhanced durability.\n\t\n- Optimized Heat Transfer: Promotes efficient cooling by improving heat dissipation to cylinder walls.\n\t\n- Elliptical Piston Design: Ensures even bearing surface and thrust load distribution under thermal expansion, preventing stress concentration.\n\t\n- German Engineering: Manufactured to exacting standards for precision, performance, and longevity.\n\n#### Specifications:\n\n\t\n- Bore Size: 89.02mm\n\t\n- Actual Bore: 88.96mm\n\t\n- Display (cm³): 398\n\t\n- Stroke (mm): 64.00\n\t\n- Clearance (mm): 0.06\n\t\n- Wossner Compression Ratio: OEM\n\t\n- OEM Compression Ratio: 11.00:1\n\t\n- Dome Volume (cm³): +7.00\n\t\n- Compression Height (mm): 27.50\n\t\n- Lock Part Number: CW20\n\t\n- Pin Part Number: WP038\n\t\n- Ring Set Part Number: 890XSY","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-ktm-400-exc-8900-forged-wossner-8580dc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/491da4229724:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/491da4229724:1"}},"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."]}}