{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"d206ca3c116f","name":"PISTON KIT 01-04 YZF250 77.00, 8572DB WOSSNER 2-RING","sku":"56-W022+00B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":3,"price":{"amount":172.51,"formatted":"£172.51"},"summary":"Wossner Pro Series 2-ring forged piston kit with a 77.00 mm bore size. Engineered for superior strength and performance, this piston kit is designed for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany. Bore: 76.97 mm, Piston Size: 77.01 mm, Displacement: 249 cm&sup3;, Stroke: 53.60 mm, Clearance: 0.04 mm, Wossner Compression Ratio: 12.80:1, OEM Compression Ratio: 12.50:1, Dome Volume: -4.80 cm&sup3;, Compression Height: 20.50 mm. Includes lock CW16, pin WP059, ring set 770XAS, and rod P4006 / P4005.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"254286"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W022_2B00B_2EWO/42121986312c0624.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W022_2B00B_2EWO/42121986312c0624.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W022_2B00B_2EWO/db69ad4bd98bff0c.jpg"],"description":"Wossner Pro Series 2-ring forged piston kit with a 77.00 mm bore size. Engineered for superior strength and performance, this piston kit is designed for optimal heat transfer from the combustion chamber to cylinder walls. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany. Bore: 76.97 mm, Piston Size: 77.01 mm, Displacement: 249 cm&sup3;, Stroke: 53.60 mm, Clearance: 0.04 mm, Wossner Compression Ratio: 12.80:1, OEM Compression Ratio: 12.50:1, Dome Volume: -4.80 cm&sup3;, Compression Height: 20.50 mm. Includes lock CW16, pin WP059, ring set 770XAS, and rod P4006 / P4005.","descriptionMarkdown":"### Wossner 2-Ring Forged Piston Kit\n\nExperience enhanced strength and performance with the Wossner forged piston kit. This premium piston is engineered for superior heat transfer from the combustion chamber to the cylinder walls, ensuring optimal operating temperatures and efficiency. Its advanced elliptical design guarantees a uniform bearing surface even under heat expansion, effectively reducing localized pressure and evenly distributing thrust loads. This intelligent design prevents piston collapse and contributes to overall longevity.\n\n**Key Features:**\n\n \n- Forged construction provides exceptional durability and strength.\n \n- Optimized heat transfer capabilities for improved engine performance.\n \n- Elliptical design minimizes localized pressure and prevents piston collapse.\n \n- Pro Series design with a two-ring configuration for superior sealing and extended lifespan.\n \n- Manufactured in Germany for precision and quality.\n\n**Specifications:**\n\n \n- Bore: 76.97 mm\n \n- Piston Size: 77.01 mm\n \n- Displacement: 249 cm&sup3;\n \n- Stroke: 53.60 mm\n \n- Clearance: 0.04 mm\n \n- Wossner Compression Ratio: 12.80:1\n \n- OEM Compression Ratio: 12.50:1\n \n- Dome Volume: -4.80 cm&sup3;\n \n- Compression Height: 20.50 mm","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-yzf250-7700-8572db-wossner-2-ring","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/d206ca3c116f:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/d206ca3c116f: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."]}}