{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"fa215a124f21","name":"PISTON KIT 03-04 YZF450 95 HC, FORGED WOSSNER 8570DA, 5TJ-11631-00-00","sku":"56-W4785.A.WO.H","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":6,"price":{"amount":220.73,"formatted":"£220.73"},"summary":"Wossner 8570DA Piston Kit. 95mm bore, 94.96mm standard size. High compression. Forged pistons are superior in strength and design, engineered for optimal combustion chamber heat transfer to cylinder walls. Elliptically designed for a uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads evenly to prevent piston collapse. Made in Germany. Part no 56-W4785.A.WO.HC. Includes clip part no CW18, pin part no WP053, and ring part no 950ADS-2. Display (cm3) 449, hub stroke (mm) 63.40, clearance (mm) 0.04. Wossner compression ratio: OEM, OEM compression ratio: 12.50:1. Dome volume (cm3) -7.80, compression height (mm) 23.50. Cross reference number: 5TJ-11631-00-00. Weight 396 grams.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"General Size","value":"95mm"},{"label":"Variant Id","value":"256083"}],"image":"https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4785_2EA_2EWO_2EH/278a6a653361fc07.jpg","images":["https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4785_2EA_2EWO_2EH/278a6a653361fc07.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4785_2EA_2EWO_2EH/14c2b3b8f8e43e17.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4785_2EA_2EWO_2EH/d0538db5feb8d37e.jpg","https://b69270dd6ab1.blob.upstash.io/oracle/oro2u/56-W4785_2EA_2EWO_2EH/68293416b5c2fcee.jpg"],"description":"Wossner 8570DA Piston Kit. 95mm bore, 94.96mm standard size. High compression. Forged pistons are superior in strength and design, engineered for optimal combustion chamber heat transfer to cylinder walls. Elliptically designed for a uniform bearing surface under piston heat expansion, eliminating localized pressure and distributing thrust loads evenly to prevent piston collapse. Made in Germany. Part no 56-W4785.A.WO.HC. Includes clip part no CW18, pin part no WP053, and ring part no 950ADS-2. Display (cm3) 449, hub stroke (mm) 63.40, clearance (mm) 0.04. Wossner compression ratio: OEM, OEM compression ratio: 12.50:1. Dome volume (cm3) -7.80, compression height (mm) 23.50. Cross reference number: 5TJ-11631-00-00. Weight 396 grams.","descriptionMarkdown":"### Wossner High Compression Forged Piston Kit\n\nThis Wossner piston kit is designed for high-performance applications, featuring a forged construction for superior strength and durability. It is engineered to optimize combustion chamber heat transfer to the cylinder walls and features an elliptical design for a more uniform bearing surface under piston expansion. This design helps to prevent piston collapse and distribute thrust loads evenly.\n\n**Key Features:**\n\n \n- Wossner forged pistons offer superior strength and design.\n \n- Engineered for optimal combustion chamber heat transfer.\n \n- Elliptical design for uniform bearing surface and even thrust load distribution.\n \n- Prevents piston collapse and localized pressure.\n \n- Made in Germany.\n \n- High compression design.\n \n- Standard size bore of 94.96mm (95mm).\n \n- Includes clip part number CW18, pin part number WP053, and ring part number 950ADS-2.\n \n- Dome volume: -7.80 cm3.\n \n- Compression height: 23.50 mm.\n \n- Theoretical weight: 396 grams.\n\n**Part Cross Reference:** 5TJ-11631-00-00","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-8570da-5tj-11631-00-00","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/fa215a124f21:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/fa215a124f21:1"}},"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."]}}