{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"61a0e9abf019","name":"PISTON KIT 06-09 YZF WRF450 95, WOSSNER 8631DA HC YZF450, 2S2-11631-20-00","sku":"56-W223.A.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":2,"price":{"amount":208.24,"formatted":"£208.24"},"summary":"Wossner Pro Series high-compression forged piston kit. Bore Size: 95.00mm, Actual Bore Diameter: 94.96mm, Displacement: 449 cm&sup3;, Stroke: 63.40mm, Clearance: 0.04mm. Wossner Compression Ratio: 13.50:1, OEM Compression Ratio: 12.30:1. Dome Volume: -6.10 cm&sup3;, Compression Height: 23.50mm. Lock Part Number: CW18, Pin Part Number: WP053, Ring Set Part Number: 950ADS-2, Rod Part Number: P4008. Cross-Reference OEM Part Number: 2S2-11631-20-00. Features an elliptical design for uniform bearing surface under heat expansion. Manufactured in Germany.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"95mm"},{"label":"Variant Id","value":"255086"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W223_2EA_2EWO/4f40b1f3e5719125.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W223_2EA_2EWO/4f40b1f3e5719125.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W223_2EA_2EWO/2dd91f22e3ebcaeb.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W223_2EA_2EWO/ee893e379a79494e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W223_2EA_2EWO/04fa69a318ef0197.jpg"],"description":"Wossner Pro Series high-compression forged piston kit. Bore Size: 95.00mm, Actual Bore Diameter: 94.96mm, Displacement: 449 cm&sup3;, Stroke: 63.40mm, Clearance: 0.04mm. Wossner Compression Ratio: 13.50:1, OEM Compression Ratio: 12.30:1. Dome Volume: -6.10 cm&sup3;, Compression Height: 23.50mm. Lock Part Number: CW18, Pin Part Number: WP053, Ring Set Part Number: 950ADS-2, Rod Part Number: P4008. Cross-Reference OEM Part Number: 2S2-11631-20-00. Features an elliptical design for uniform bearing surface under heat expansion. Manufactured in Germany.","descriptionMarkdown":"### Wossner Pro Series High-Compression Forged Piston Kit\n\n Upgrade your motorcycle's performance with the Wossner Pro Series high-compression forged piston kit. Engineered for superior strength and optimized heat transfer, this piston kit is designed to enhance combustion chamber efficiency and deliver a noticeable boost in power.\n\n The advanced elliptical design of these pistons ensures a uniform bearing surface even under extreme heat expansion. This innovative feature significantly reduces localized pressure and prevents piston collapse, leading to increased durability and consistent performance. Manufactured to the highest standards in Germany, Wossner pistons represent precision engineering and top-tier quality.\n\n**Key Features:**\n\n \n- High-compression Pro Series forged piston for increased power output.\n \n- Optimized heat transfer for improved combustion efficiency.\n \n- Elliptical design promotes even thrust load distribution.\n \n- Reduces localized pressure to prevent piston collapse.\n \n- Precision manufactured in Germany.\n\n**Specifications:**\n\n \n- Bore Size: 95.00mm\n \n- Actual Bore Diameter: 94.96mm\n \n- Displacement: 449 cm&sup3;\n \n- Stroke: 63.40mm\n \n- Clearance: 0.04mm\n \n- Wossner Compression Ratio: 13.50:1\n \n- OEM Compression Ratio: 12.30:1\n \n- Dome Volume: -6.10 cm&sup3;\n \n- Compression Height: 23.50mm\n \n- Lock Part Number: CW18\n \n- Pin Part Number: WP053\n \n- Ring Set Part Number: 950ADS-2\n \n- Rod Part Number: P4008\n\n**Cross-Reference OEM Part Numbers:**\n\n \n- 2S2-11631-20-00","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EC F 450","cc":null,"notes":null,"years":"2013–2015"},{"make":"YAMAHA","model":"WR 450F","cc":null,"notes":null,"years":"2003–2015"},{"make":"YAMAHA","model":"WRF 450","cc":null,"notes":null,"years":"2003–2015"},{"make":"YAMAHA","model":"YZ 450F","cc":null,"notes":null,"years":"2003–2009"},{"make":"YAMAHA","model":"YZF 450","cc":null,"notes":null,"years":"2003–2009"}],"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-yzf-wrf450-95-wossner-8631da-hc-yzf450-2s2-11631-20-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/61a0e9abf019:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/61a0e9abf019:1"}},"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."]}}