{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"53bd741ee21c","name":"PISTON KIT 00-07 KTM520 525 95, WOSSNER 8547DB BETA RR525","sku":"56-W4731.B.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner forged piston kit offering superior strength and optimized heat transfer for high-performance applications. Features an elliptical design for uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability. Specifications include a bore size of 95.01mm, actual bore of 94.96mm, display volume of 510 cm³, stroke of 54.80mm, clearance of 0.04mm, Wossner compression ratio of 12.90:1, OEM compression ratio of 12.80:1, dome volume of 1.20 cm³, compression height of 19.50mm, lock part number CW20, pin part number WP038, and ring set part number 950ADS-2. Part number 56-W4731.B.WO.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"95mm"},{"label":"Variant Id","value":"255970"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/68058138dd58bbf7.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/68058138dd58bbf7.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/587a37ee58ff7240.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/e1f2df0291a09484.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/52d58ddd965b829a.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4731_2EB_2EWO/887b3dba8d992814.jpg"],"description":"Wossner forged piston kit offering superior strength and optimized heat transfer for high-performance applications. Features an elliptical design for uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability. Specifications include a bore size of 95.01mm, actual bore of 94.96mm, display volume of 510 cm³, stroke of 54.80mm, clearance of 0.04mm, Wossner compression ratio of 12.90:1, OEM compression ratio of 12.80:1, dome volume of 1.20 cm³, compression height of 19.50mm, lock part number CW20, pin part number WP038, and ring set part number 950ADS-2. Part number 56-W4731.B.WO.","descriptionMarkdown":"### Wossner Forged Piston Kit for High-Performance Engines\n\nUpgrade your engine with a Wossner forged piston kit, engineered for superior strength and optimized heat transfer. This kit features an elliptical piston design that ensures a uniform bearing surface, even under extreme heat expansion. This design minimizes localized pressure and effectively prevents piston collapse, leading to improved engine longevity and performance. Manufactured to exacting standards in Germany, Wossner pistons are synonymous with precision and durability.\n\n**Key Features:**\n\n\t\n- Forged Construction: Provides exceptional strength and durability for demanding applications.\n\t\n- Optimized Heat Transfer: Promotes efficient heat dissipation to cylinder walls, enhancing overall engine performance.\n\t\n- Elliptical Piston Design: Guarantees even thrust load distribution for reduced wear and increased reliability.\n\t\n- German Manufacturing: Ensures precision engineering and premium quality materials.\n\n**Specifications:**\n\n\t\n- Bore Size: 95.01mm\n\t\n- Actual Bore: 94.96mm\n\t\n- Display (cm&sup3;): 510\n\t\n- Stroke (mm): 54.80\n\t\n- Clearance (mm): 0.04\n\t\n- Wossner Compression Ratio: 12.90:1\n\t\n- OEM Compression Ratio: 12.80:1\n\t\n- Dome Volume (cm&sup3;): 1.20\n\t\n- Compression Height (mm): 19.50\n\t\n- Lock Part Number: CW20\n\t\n- Pin Part Number: WP038\n\t\n- Ring Set Part Number: 950ADS-2","weightGrams":null,"fitments":[{"make":"BETA","model":"RR 525","cc":null,"notes":null,"years":"2005–2009"},{"make":"BETA","model":"RR ENDURO 4T 525","cc":null,"notes":null,"years":"2005–2009"},{"make":"KTM","model":"520 EXC","cc":null,"notes":"1st Filter (Long)","years":"2000–2002"},{"make":"KTM","model":"520 SX","cc":null,"notes":"1st Filter","years":"2000–2002"},{"make":"KTM","model":"525 EXC","cc":null,"notes":"1st Filter","years":"2003–2007"},{"make":"KTM","model":"525 EXC","cc":null,"notes":null,"years":"2008–2010"},{"make":"KTM","model":"525 EXC RACING","cc":null,"notes":null,"years":"2003–2007"},{"make":"KTM","model":"525 SM R","cc":null,"notes":null,"years":"2004–2005"},{"make":"KTM","model":"525 SM-R","cc":null,"notes":null,"years":"2004–2005"},{"make":"KTM","model":"525 SX","cc":null,"notes":"1st Filter","years":"2003–2007"},{"make":"KTM","model":"525 SX","cc":null,"notes":null,"years":"2008–2010"},{"make":"KTM","model":"525 XC","cc":null,"notes":null,"years":"2008–2012"},{"make":"KTM","model":"525 XC ATV","cc":null,"notes":null,"years":"2003–2012"},{"make":"POLARIS","model":"OUTLAW 450","cc":null,"notes":null,"years":"2003–2011"},{"make":"POLARIS","model":"OUTLAW 525","cc":null,"notes":null,"years":"2007–2012"}],"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-00-07-ktm520-525-95-wossner-8547db-beta-rr525","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/53bd741ee21c:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/53bd741ee21c: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."]}}