{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"20f2e2afa61b","name":"PISTON KIT 04-09 CRF250 HC 78, WOSSNER 8590DC FORGED","sku":"56-W4852.C.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":182.86,"formatted":"£182.86"},"summary":"Wossner 78.02mm high-compression forged piston kit is designed for enhanced engine performance. Manufactured in Germany for precision and reliability. Features high-compression design for increased engine performance, forged construction for enhanced strength and longevity, optimized heat transfer for efficient cooling, and an elliptical design that prevents piston collapse and ensures even load distribution. Specifications include Bore Size: 78.02mm, Actual Bore Diameter: 77.98mm, Displacement: 249 cm³, Stroke: 52.20mm, Clearance: 0.04mm, Wossner Compression Ratio: 13.90:1, OEM Compression Ratio: 12.90:1, Dome Volume: +0.00 cm³, Compression Height: 19.00mm, Lock Part Number: CW16, Pin Part Number: WP059, Ring Set Part Number: 780XAS, and Rod Part Number: P4001. Wossner Part No: 8590DC.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"78mm"},{"label":"Variant Id","value":"256273"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4852_2EC_2EWO/b3e6eb38952689c5.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4852_2EC_2EWO/b3e6eb38952689c5.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4852_2EC_2EWO/980e34bb376f33b0.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4852_2EC_2EWO/655ee3b4349e4b6e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4852_2EC_2EWO/86f7f139a40bd321.jpg"],"description":"Wossner 78.02mm high-compression forged piston kit is designed for enhanced engine performance. Manufactured in Germany for precision and reliability. Features high-compression design for increased engine performance, forged construction for enhanced strength and longevity, optimized heat transfer for efficient cooling, and an elliptical design that prevents piston collapse and ensures even load distribution. Specifications include Bore Size: 78.02mm, Actual Bore Diameter: 77.98mm, Displacement: 249 cm³, Stroke: 52.20mm, Clearance: 0.04mm, Wossner Compression Ratio: 13.90:1, OEM Compression Ratio: 12.90:1, Dome Volume: +0.00 cm³, Compression Height: 19.00mm, Lock Part Number: CW16, Pin Part Number: WP059, Ring Set Part Number: 780XAS, and Rod Part Number: P4001. Wossner Part No: 8590DC.","descriptionMarkdown":"### Wossner Forged High-Compression Piston Kit\n\nUpgrade your engine's performance with the Wossner 78.02mm high-compression forged piston kit. This precision-engineered piston is designed for enhanced power output and durability, featuring advanced construction for optimal engine operation.\n\n**Key Features:**\n\n\t\n- High-Compression Design: Significantly increases engine performance for a more powerful ride.\n\t\n- Forged Construction: Provides superior strength and longevity compared to cast pistons, built to withstand demanding conditions.\n\t\n- Optimized Heat Transfer: Engineered for efficient cooling of the combustion chamber, maintaining optimal operating temperatures.\n\t\n- Elliptical Design: Ensures a uniform bearing surface, minimizing localized pressure and distributing thrust loads evenly to prevent piston collapse.\n\t\n- German Engineering: Manufactured in Germany, guaranteeing high-quality standards and reliable performance.\n\n**Specifications:**\n\n\t\n- Bore Size: 78.02mm\n\t\n- Actual Bore Diameter: 77.98mm\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: 13.90:1\n\t\n- OEM Compression Ratio: 12.90:1\n\t\n- Dome Volume: +0.00 cm&sup3;\n\t\n- Compression Height: 19.00mm\n\t\n- Includes Lock Part Number: CW16\n\t\n- Includes Pin Part Number: WP059\n\t\n- Includes Ring Set Part Number: 780XAS\n\t\n- Compatible Rod Part Number: P4001 (for 2010 - Current models)","weightGrams":null,"fitments":[{"make":"HONDA","model":"CRF 250R","cc":null,"notes":null,"years":"2004–2009"},{"make":"HONDA","model":"CRF 250X","cc":null,"notes":null,"years":"2004–2017"}],"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-04-09-crf250-hc-78-wossner-8590dc-forged","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/20f2e2afa61b:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/20f2e2afa61b: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."]}}