{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"c9136bc5e9ff","name":"PISTON KIT 15-16 KX250F 77 A, 8921DA WOSSNER KAWASAKI 13001-0747, KXF250","sku":"56-W331.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":172.14,"formatted":"£172.14"},"summary":"Wossner forged piston kit with a 77mm bore. Features include forged construction for increased strength and reliability, optimized heat transfer for efficient combustion, and an elliptical design for uniform bearing surface and even thrust load distribution. Manufactured in Germany. Specifications: Bore Size 77mm, Clearance 0.05mm, OEM Compression Ratio 13.80:1, Dome Volume -2.43 cm³, Compression Height 19.80mm, Stroke 53.60mm, Displacement 249 cm³, Theoretical Weight 139.00g. Wossner Part No. 8921DA. Cross-Reference OEM Part No. 13001-0747.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"255323"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54269_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54269_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54269_2.jpg"],"description":"Wossner forged piston kit with a 77mm bore. Features include forged construction for increased strength and reliability, optimized heat transfer for efficient combustion, and an elliptical design for uniform bearing surface and even thrust load distribution. Manufactured in Germany. Specifications: Bore Size 77mm, Clearance 0.05mm, OEM Compression Ratio 13.80:1, Dome Volume -2.43 cm³, Compression Height 19.80mm, Stroke 53.60mm, Displacement 249 cm³, Theoretical Weight 139.00g. Wossner Part No. 8921DA. Cross-Reference OEM Part No. 13001-0747.","descriptionMarkdown":"### Wossner Forged Piston Kit 77mm Bore\n\nEnhance the performance and durability of your motorcycle with this Wossner forged piston kit. Engineered with precision in Germany, this kit features a 77mm bore and is designed to meet the demands of high-performance riding.\n\n**Key Features:**\n\n\t\n- Forged Construction: Provides superior strength and reliability compared to cast pistons, ensuring longevity under demanding conditions.\n\t\n- Elliptical Design: This innovative design promotes uniform bearing surface expansion, which reduces localized pressure and effectively prevents piston collapse due to heat expansion.\n\t\n- Optimized Heat Transfer: The piston is designed for efficient heat transfer, contributing to optimal combustion and overall engine performance.\n\t\n- High-Quality Manufacturing: Proudly manufactured in Germany, guaranteeing exceptional quality and precision engineering.\n\n**Specifications:**\n\n\t\n- Bore Size: 77mm\n\t\n- Clearance: 0.05mm\n\t\n- OEM Compression Ratio: 13.80:1\n\t\n- Dome Volume: -2.43 cm&sup3;\n\t\n- Compression Height: 19.80mm\n\t\n- Stroke: 53.60mm\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Theoretical Weight: 139.00g\n\n**Part Cross-References:**\n\n\t\n- Wossner Part Number: 8921DA\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP087\n\t\n- Ring Set Part Number: 770XAS-2\n\t\n- OEM Part Number: 13001-0747\n\t\n- Wiseco Part Number: 40124M07700","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 250F","cc":null,"notes":null,"years":"2015–2016"}],"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-15-16-kx250f-77-a-8921da-wossner-kawasaki-13001-0747-kxf250","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/c9136bc5e9ff:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/c9136bc5e9ff: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."]}}