{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"782a179c7894","name":"PISTON KIT 03-04 YZF450 95 HC, FORGED WOSSNER 8570DC","sku":"56-W4785.C.WO.H","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner high-compression forged piston kit. Features elliptical design for uniform bearing surfaces under heat expansion, optimizing heat transfer. Includes piston kit (8570DC), piston clip (CW18), piston pin (WP053), and piston ring (950ADS-2). Specifications: Bore size 94.98mm (+0.02mm oversize = 95.02mm), displacement 449 cm&sup3;, stroke 63.40mm, clearance 0.04mm, compression ratio 12.50:1, dome volume -7.80 cm&sup3;, compression height 23.50mm. 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":"256089"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock55035_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock55035_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55035_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55035_3.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock55035_4.jpg"],"description":"Wossner high-compression forged piston kit. Features elliptical design for uniform bearing surfaces under heat expansion, optimizing heat transfer. Includes piston kit (8570DC), piston clip (CW18), piston pin (WP053), and piston ring (950ADS-2). Specifications: Bore size 94.98mm (+0.02mm oversize = 95.02mm), displacement 449 cm&sup3;, stroke 63.40mm, clearance 0.04mm, compression ratio 12.50:1, dome volume -7.80 cm&sup3;, compression height 23.50mm. Manufactured in Germany.","descriptionMarkdown":"### Wossner High-Compression Forged Piston Kit\n\nUpgrade your motorcycle's performance with this Wossner high-compression forged piston kit. Engineered in Germany for demanding applications, this piston kit is designed to deliver enhanced power and exceptional durability. Its advanced elliptical design ensures uniform bearing surfaces under extreme heat, preventing localized pressure and piston collapse for reliable operation.\n\n**Key Features:**\n\n\t\n- High-compression forged construction for increased power output and longevity.\n\t\n- Optimized heat transfer for improved combustion efficiency.\n\t\n- Elliptical piston design for even thrust load distribution and reduced wear.\n\t\n- Precision manufactured in Germany to the highest standards.\n\n**Specifications:**\n\n\t\n- Bore Size: 94.98mm (95.02mm with 0.02mm oversize)\n\t\n- Displacement: 449 cm&sup3;\n\t\n- Stroke: 63.40mm\n\t\n- Piston Clearance: 0.04mm\n\t\n- Compression Ratio: Matches OEM 12.50:1\n\t\n- Dome Volume: -7.80 cm&sup3;\n\t\n- Compression Height: 23.50mm\n\n**Included Components:**\n\n\t\n- Wossner Piston Kit (Part Number 8570DC)\n\t\n- Piston Clips (CW18)\n\t\n- Piston Pin (WP053)\n\t\n- Piston Rings (950ADS-2)","weightGrams":null,"fitments":[{"make":"GAS-GAS","model":"EC F 250","cc":null,"notes":null,"years":"2013–2015"},{"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-03-04-yzf450-95-hc-forged-wossner-8570dc","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/782a179c7894:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/782a179c7894:1"}},"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."]}}