{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"18b43662ea3f","name":"PISTON KIT 86-04 XR250 77.00, FORGED WOSSNER 8793D400","sku":"56-W4466+400.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner forged piston kit with 77.00 mm bore size, +4.00 mm oversize. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse. Features forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Designed for 4-stroke engines. Specifications include: Bore Size 77.00 mm (+4.00 mm oversize), Actual Bore 76.94 mm, Stroke 59.50 mm, Clearance 0.06 mm, Compression Height 25.00 mm, Dome Volume +6.00 cm&sup3;, Compression Ratio 10.50:1 (OEM 9.30:1), Displacement 249 cm&sup3;. Wossner Part No. 8793D400. Cross-Reference OEM Part Numbers: Lock P/N CW17, Pin P/N WP090, Ring Set P/N 770XDS, OEM Piston 13101-KCE-670. Weight: 352 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"255656"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4466_2B400_2EWO/d1afe4794b991170.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4466_2B400_2EWO/d1afe4794b991170.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4466_2B400_2EWO/e76c7881d5ea6f70.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4466_2B400_2EWO/0b4a71390f35da62.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4466_2B400_2EWO/7097dfba94c088fc.jpg"],"description":"Wossner forged piston kit with 77.00 mm bore size, +4.00 mm oversize. Manufactured in Germany, this piston offers superior strength and heat transfer efficiency. The elliptical design ensures even load distribution, reducing localized pressure and preventing piston collapse. Features forged construction for enhanced durability and strength, optimized heat transfer for improved performance, and an elliptical design for uniform bearing surface and reduced wear. Designed for 4-stroke engines. Specifications include: Bore Size 77.00 mm (+4.00 mm oversize), Actual Bore 76.94 mm, Stroke 59.50 mm, Clearance 0.06 mm, Compression Height 25.00 mm, Dome Volume +6.00 cm&sup3;, Compression Ratio 10.50:1 (OEM 9.30:1), Displacement 249 cm&sup3;. Wossner Part No. 8793D400. Cross-Reference OEM Part Numbers: Lock P/N CW17, Pin P/N WP090, Ring Set P/N 770XDS, OEM Piston 13101-KCE-670. Weight: 352 grams.","descriptionMarkdown":"### Wossner Forged Piston Kit - 77.00mm Oversize\n\nThis Wossner forged piston kit is engineered for superior performance and durability in 4-stroke motorcycle engines. Manufactured in Germany, it features advanced design elements to enhance reliability and power output.\n\n#### Key Features\n\n\t\n- Forged Construction: Provides exceptional strength and resistance to extreme temperatures and pressures, ensuring longevity under demanding conditions.\n\t\n- Optimized Heat Transfer: Designed for efficient heat dissipation, contributing to consistent engine performance and preventing overheating.\n\t\n- Elliptical Design: The piston's elliptical shape ensures an even load distribution across the cylinder wall, reducing localized stress and minimizing wear for a uniform bearing surface. This design also helps prevent piston collapse.\n\t\n- High-Quality Materials: Crafted from premium materials for robust performance and extended service life.\n\n#### Specifications\n\n\t\n- Bore Size: 77.00 mm (+4.00 mm oversize)\n\t\n- Actual Bore: 76.94 mm\n\t\n- Stroke: 59.50 mm\n\t\n- Clearance: 0.06 mm\n\t\n- Compression Height: 25.00 mm\n\t\n- Dome Volume: +6.00 cm&sup3;\n\t\n- Compression Ratio: 10.50:1\n\t\n- OEM Compression Ratio: 9.30:1\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Made in Germany\n\n#### Included Components\n\n\t\n- Wossner Piston Part No.: 8793D400\n\t\n- Lock Ring P/N: CW17\n\t\n- Pin P/N: WP090\n\t\n- Ring Set P/N: 770XDS","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-86-04-xr250-7700-forged-wossner-8793d400","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/18b43662ea3f:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/18b43662ea3f: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."]}}