{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"a11f5f3a223d","name":"PISTON KIT SET/4 YZF R6 01-05, WOSSNER K8831D200-4 YAMAHA","sku":"56-W9904.200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":793.43,"formatted":"£793.43"},"summary":"Wossner forged piston kit for Yamaha YZF R6 2001-2006. Features a 67.50mm bore and +2.00mm oversize. Set of 4 pistons designed for optimized thermal management, durability, and load distribution under high stress. Improved combustion heat transfer to cylinder walls with an elliptical design that ensures a uniform bearing surface under heat expansion, preventing localized pressure and piston collapse. Compression ratio remains OEM standard. Made in Germany. Specifications: Bore 67.50mm, Piston diameter 67.44mm, Compression height 21.20mm, Displacement 600cc, Dome volume -0.10cm³, Clearance 0.06mm, Stroke 44.50mm. OEM Compression ratio 12.40:1. Wossner compression ratio OEM. Includes Part No: 56-W9904.200.WO, Clip No: CW16, Piston Pin No: WP036, Replacement Ring Set No: 675XKS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"259125"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock58071_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock58071_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock58071_2.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock58071_3.jpg"],"description":"Wossner forged piston kit for Yamaha YZF R6 2001-2006. Features a 67.50mm bore and +2.00mm oversize. Set of 4 pistons designed for optimized thermal management, durability, and load distribution under high stress. Improved combustion heat transfer to cylinder walls with an elliptical design that ensures a uniform bearing surface under heat expansion, preventing localized pressure and piston collapse. Compression ratio remains OEM standard. Made in Germany. Specifications: Bore 67.50mm, Piston diameter 67.44mm, Compression height 21.20mm, Displacement 600cc, Dome volume -0.10cm³, Clearance 0.06mm, Stroke 44.50mm. OEM Compression ratio 12.40:1. Wossner compression ratio OEM. Includes Part No: 56-W9904.200.WO, Clip No: CW16, Piston Pin No: WP036, Replacement Ring Set No: 675XKS.","descriptionMarkdown":"### Wossner Forged Piston Kit Set - Yamaha YZF R6\n\nThis Wossner piston kit is a high-performance forged set specifically engineered for the Yamaha YZF R6. Featuring a 67.50mm bore and +2.00mm oversize, it includes four pistons designed to optimise thermal management, durability, and load distribution under high stress. Manufactured in Germany, these pistons maintain OEM compression characteristics while enhancing strength and reliability.\n\n#### Key Features\n\n\t\n- Set of 4 forged pistons\n\t\n- Designed for improved combustion heat transfer to cylinder walls\n\t\n- Elliptical design ensures uniform bearing surface under heat expansion\n\t\n- Prevents localised pressure and piston collapse\n\t\n- Compression ratio remains OEM standard\n\t\n- Made in Germany\n\n#### Specifications\n\n\t\n- Bore: 67.50mm (Oversize +2.00mm)\n\t\n- Piston diameter: 67.44mm\n\t\n- Compression height: 21.20mm\n\t\n- Displacement: 600cc\n\t\n- Dome volume: -0.10cm&sup3;\n\t\n- Clearance: 0.06mm\n\t\n- Stroke: 44.50mm\n\t\n- Display (cm&sup3;): 600 / 617 / 636\n\t\n- OEM Compression ratio: 12.40:1\n\t\n- Wossner compression ratio: OEM","weightGrams":null,"fitments":[],"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-set4-yzf-r6-01-05-wossner-k8831d200-4-yamaha","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/a11f5f3a223d:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/a11f5f3a223d: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."]}}