{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"f54a12b3eb82","name":"PISTON KIT 01-04 YZF250 77.00, FORGED WOSSNER 8559DC 3-RING","sku":"56-W4738+00C.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 8559DC with a 77.02mm bore and 76.98mm size, featuring a three-ring design. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse. Features include high-strength forged construction for durability, optimized heat transfer for improved combustion efficiency, an elliptical design for uniform expansion and reduced localized pressure, a three-ring design for enhanced sealing and performance, and German manufacturing. Specifications include an OEM compression ratio of 12.50:1, lock part number CW16, pin part number WP059, ring set part number 770XAS-2, displacement of 249 cm&sup3;, stroke of 53.6mm, clearance of 0.04mm, dome volume of -4.70 cm&sup3;, compression height of 22.20mm, and a theoretical weight not specified.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"77mm"},{"label":"Variant Id","value":"256018"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock54964_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock54964_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54964_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54964_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock54964_4.jpg"],"description":"Wossner forged piston kit 8559DC with a 77.02mm bore and 76.98mm size, featuring a three-ring design. Manufactured in Germany, this piston is engineered to enhance heat transfer, ensuring uniform expansion and even thrust load distribution. The elliptical design prevents localized pressure and piston collapse. Features include high-strength forged construction for durability, optimized heat transfer for improved combustion efficiency, an elliptical design for uniform expansion and reduced localized pressure, a three-ring design for enhanced sealing and performance, and German manufacturing. Specifications include an OEM compression ratio of 12.50:1, lock part number CW16, pin part number WP059, ring set part number 770XAS-2, displacement of 249 cm&sup3;, stroke of 53.6mm, clearance of 0.04mm, dome volume of -4.70 cm&sup3;, compression height of 22.20mm, and a theoretical weight not specified.","descriptionMarkdown":"### Wossner Forged Piston Kit - 77.00mm Bore, 3-Ring Design\n\nUpgrade your motorcycle's performance with this high-strength forged piston kit from Wossner. Engineered in Germany, this piston is designed for enhanced durability and optimal combustion efficiency.\n\n#### Key Features:\n\n\t\n- Forged Construction: Provides superior strength and longevity for high-performance applications.\n\t\n- Optimized Heat Transfer: Ensures uniform expansion and even thrust load distribution for consistent performance.\n\t\n- Elliptical Design: Prevents localized pressure and piston collapse, maintaining integrity under stress.\n\t\n- Three-Ring Design: Enhances sealing capabilities for improved compression and reduced blow-by.\n\t\n- Precision Manufacturing: Made in Germany to exacting standards for reliable fit and function.\n\n#### Specifications:\n\n\t\n- Bore Size: 77.02mm\n\t\n- Piston Size: 76.98mm\n\t\n- Ring Set Part Number: 770XAS-2\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP059\n\t\n- Dome Volume: -4.70 cm&sup3;\n\t\n- Compression Height: 22.20mm\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Stroke: 53.6mm\n\t\n- Piston Clearance: 0.04mm\n\t\n- OEM Compression Ratio: 12.50:1\n\t\n- Wossner Part Number: 8559DC","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-01-04-yzf250-7700-forged-wossner-8559dc-3-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/f54a12b3eb82:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/f54a12b3eb82:1"}},"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."]}}