{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"8c544749f53b","name":"PISTON KIT XR XL 250 74.50, WOSSNER 8791D050 79-83","sku":"56-W4171+P2.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":172.51,"formatted":"£172.51"},"summary":"Wossner forged piston kit with a bore size of 74.50 mm. This piston offers superior strength and heat transfer efficiency with an elliptical design for even load distribution, reducing localized pressure and preventing piston collapse. Features include forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for a uniform bearing surface and reduced wear. Designed for 4-stroke engines, it has an actual bore of 74.44 mm, a stroke of 57.80 mm, clearance of 0.06 mm, compression height of 24.70 mm, and dome volume of +9.30 cm³. The compression ratio is 10.00:1 with a displacement of 249 cm³. Made in Germany. Wossner Part No. 8791D050.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"74.5mm"},{"label":"Variant Id","value":"255543"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54489_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54489_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54489_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54489_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54489_4.jpg"],"description":"Wossner forged piston kit with a bore size of 74.50 mm. This piston offers superior strength and heat transfer efficiency with an elliptical design for even load distribution, reducing localized pressure and preventing piston collapse. Features include forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for a uniform bearing surface and reduced wear. Designed for 4-stroke engines, it has an actual bore of 74.44 mm, a stroke of 57.80 mm, clearance of 0.06 mm, compression height of 24.70 mm, and dome volume of +9.30 cm³. The compression ratio is 10.00:1 with a displacement of 249 cm³. Made in Germany. Wossner Part No. 8791D050.","descriptionMarkdown":"### Wossner Forged Piston Kit for Honda XL250S and XR250\n\nUpgrade your motorcycle's performance and durability with this Wossner forged piston kit. Engineered for precision and strength, this piston is manufactured in Germany to the highest standards. Its advanced design promotes efficient heat transfer and uniform load distribution, ensuring optimal engine operation and longevity.\n\n**Key Features:**\n\n\t\n- Forged Construction: Provides superior strength and resistance to wear and tear compared to cast pistons.\n\t\n- Optimized Heat Transfer: Enhances engine cooling and performance by efficiently dissipating heat.\n\t\n- Elliptical Design: Ensures even bearing surface, reducing localized pressure and preventing piston collapse for extended component life.\n\t\n- High-Quality Materials: Crafted with premium materials for reliable and consistent performance.\n\t\n- Designed for 4-Stroke Engines: Specifically developed for the demands of 4-stroke motorcycle engines.\n\n**Specifications:**\n\n\t\n- Bore Size: 74.50 mm\n\t\n- Actual Bore: 74.44 mm\n\t\n- Stroke: 57.80 mm\n\t\n- Clearance: 0.06 mm\n\t\n- Compression Height: 24.70 mm\n\t\n- Dome Volume: +9.30 cm&sup3;\n\t\n- Compression Ratio: 10.00:1 (OEM: 9.10:1)\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Manufacturing Origin: Germany\n\n**Part Details:**\n\n\t\n- Wossner Part Number: 8791D050\n\t\n- Lock P/N: CW19\n\t\n- Pin P/N: WP028\n\t\n- Ring Set P/N: 745XDS","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-xr-xl-250-7450-wossner-8791d050-79-83","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/8c544749f53b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/8c544749f53b: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."]}}