{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"768950daf72f","name":"PISTON KIT 06-09 CRF250R X 78, FORGED WOSSNER 8656DB","sku":"56-W4830+00B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner 78.01mm forged piston kit for enhanced engine performance. Features high-compression design, optimized heat transfer for efficient cooling, and an elliptical design for uniform bearing surface, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany for precision and reliability. Specifications include Bore Size: 78.01mm, Actual Bore Diameter: 77.97mm, Displacement: 249 cm³, Stroke: 52.20mm, Clearance: 0.04mm, Wossner Compression Ratio: 13.50:1, OEM Compression Ratio: 12.90:1, Dome Volume: -0.90 cm³, Compression Height: 24.00mm, Theoretical Weight: 19.00g. Gasket Part Number: D4004, Lock Part Number: CW16, Pin Part Number: WP059, Ring Set Part Number: 780XAS. Cross-reference OEM Part Numbers: 56-W4830+00B.WO, Wossner Part No: 8656DB.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"256215"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4830_2B00B_2EWO/412d448f1e1b87d5.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4830_2B00B_2EWO/412d448f1e1b87d5.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4830_2B00B_2EWO/596bbf7fa6c29bba.jpg"],"description":"Wossner 78.01mm forged piston kit for enhanced engine performance. Features high-compression design, optimized heat transfer for efficient cooling, and an elliptical design for uniform bearing surface, reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. Manufactured in Germany for precision and reliability. Specifications include Bore Size: 78.01mm, Actual Bore Diameter: 77.97mm, Displacement: 249 cm³, Stroke: 52.20mm, Clearance: 0.04mm, Wossner Compression Ratio: 13.50:1, OEM Compression Ratio: 12.90:1, Dome Volume: -0.90 cm³, Compression Height: 24.00mm, Theoretical Weight: 19.00g. Gasket Part Number: D4004, Lock Part Number: CW16, Pin Part Number: WP059, Ring Set Part Number: 780XAS. Cross-reference OEM Part Numbers: 56-W4830+00B.WO, Wossner Part No: 8656DB.","descriptionMarkdown":"### Wossner 78.01mm High-Compression Forged Piston Kit\n\nEnhance your engine's performance with this high-compression forged piston kit from Wossner. Engineered in Germany, this piston is designed for optimal heat transfer, ensuring efficient cooling of the combustion chamber. Its advanced elliptical design promotes a uniform bearing surface, effectively reducing localized pressure and distributing thrust loads evenly to prevent piston collapse. This results in a stronger, more durable, and higher-performing engine.\n\n#### Key Features\n\n\t\n- High-Compression Design: Boosts engine performance for superior power output.\n\t\n- Forged Construction: Provides exceptional strength and longevity for demanding applications.\n\t\n- Optimized Heat Transfer: Ensures efficient cooling of the combustion chamber, maintaining peak performance.\n\t\n- Elliptical Design: Prevents piston collapse and guarantees even load distribution for enhanced durability.\n\t\n- Precision Manufacturing: Made in Germany to rigorous quality standards.\n\n#### Specifications\n\n\t\n- Bore Size: 78.01mm\n\t\n- Actual Bore Diameter: 77.97mm\n\t\n- Displacement: 249 cm&sup3;\n\t\n- Stroke: 52.20mm\n\t\n- Clearance: 0.04mm\n\t\n- Wossner Compression Ratio: 13.50:1\n\t\n- OEM Compression Ratio: 12.90:1\n\t\n- Dome Volume: -0.90 cm&sup3;\n\t\n- Compression Height: 24.00mm\n\t\n- Theoretical Weight: 19.00g\n\t\n- Gasket Part Number: D4004\n\t\n- Lock Part Number: CW16\n\t\n- Pin Part Number: WP059\n\t\n- Ring Set Part Number: 780XAS\n\n#### Cross-Reference Information\n\n\t\n- Wossner Part Number: 8656DB","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-06-09-crf250r-x-78-forged-wossner-8656db","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/768950daf72f:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/768950daf72f: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."]}}