{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"e4a3e7aef265","name":"PISTON KIT 2010 KX250F 77mm B, WOSSNER 8777DB KAWASAKI HC","sku":"56-W953.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner forged piston kit with 77.01mm bore size (76.97mm actual) and two-ring design. Features an elliptical shape for even load distribution and efficient combustion heat transfer. Manufactured in Germany, it maintains OEM compression characteristics. Specifications include a 250 cm&sup3; displacement, 53.60 mm stroke, 0.04 mm clearance, 13.20:1 OEM compression ratio, -2.50 cm&sup3; dome volume, 19.60 mm compression height, CW16 lock, WP070 pin, and 770XAS-2 ring set. Cross-reference OEM part numbers include 13001-0115, Wiseco 40009M, Vertex 23566, and ProX 01.4340.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77.00mm"},{"label":"Variant Id","value":"258373"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock57319_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock57319_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock57319_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock57319_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock57319_4.jpg"],"description":"Wossner forged piston kit with 77.01mm bore size (76.97mm actual) and two-ring design. Features an elliptical shape for even load distribution and efficient combustion heat transfer. Manufactured in Germany, it maintains OEM compression characteristics. Specifications include a 250 cm&sup3; displacement, 53.60 mm stroke, 0.04 mm clearance, 13.20:1 OEM compression ratio, -2.50 cm&sup3; dome volume, 19.60 mm compression height, CW16 lock, WP070 pin, and 770XAS-2 ring set. Cross-reference OEM part numbers include 13001-0115, Wiseco 40009M, Vertex 23566, and ProX 01.4340.","descriptionMarkdown":"### Wossner Piston Kit 77mm Oversize\n\nThis Wossner forged piston kit is precision-manufactured in Germany to deliver enhanced performance and durability for your motorcycle engine. It features a 77.01mm bore size, providing a 0.01mm oversize fitment. The two-ring design and elliptical shape of the piston are engineered to distribute thrust loads evenly, minimizing stress and wear during operation, while maintaining OEM compression characteristics for reliable performance.\n\n#### Key Features\n\n\t\n- Forged piston construction for superior strength and longevity.\n\t\n- Two-ring configuration enhances sealing and performance.\n\t\n- Elliptical piston design ensures even load distribution under thermal expansion.\n\t\n- Engineered for efficient transfer of combustion heat to cylinder walls.\n\t\n- Manufactured to high standards in Germany.\n\n#### Specifications\n\n\t\n- Bore Size: 77.01mm (actual 76.97mm)\n\t\n- Displacement: 250 cm&sup3;\n\t\n- Stroke: 53.60 mm\n\t\n- Clearance: 0.04 mm\n\t\n- Compression Ratio (Wossner): OEM\n\t\n- Compression Ratio (OEM): 13.20:1\n\t\n- Dome Volume: -2.50 cm&sup3;\n\t\n- Compression Height: 19.60 mm\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP070\n\t\n- Ring Set Part Number: 770XAS-2","weightGrams":null,"fitments":[{"make":"KAWASAKI","model":"KX 250F","cc":null,"notes":null,"years":"2010"}],"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-2010-kx250f-77mm-b-wossner-8777db-kawasaki-hc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/e4a3e7aef265:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/e4a3e7aef265:1"}},"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."]}}