{"about":"Prices are for United Kingdom in GBP. Every URL here is a plain path you can fetch directly.","product":{"basketKey":"83a7bb2ff889","name":"PISTON KIT SET/4 R1, FZR, RX1, WOSSNER K8840D200-4 YAMAHA","sku":"56-W9900.200.WO","brand":"Wossner","mpn":null,"gtin":null,"condition":"new","inStock":true,"stock":1,"price":{"amount":793.43,"formatted":"£793.43"},"summary":"Wossner piston kit set of 4 for R1, FZR, RX1. Features forged Wossner pistons with a +2.00mm oversized bore (76.00mm bore, 75.95mm actual piston diameter). Elliptical design for uniform pressure under thermal expansion, improving durability and reducing mechanical failure risk. Engineered for efficient combustion heat transfer. Made in Germany. Increases engine displacement to 1051cc. Part Number: K8840D200-4. Stroke: 58.00mm. Clearance: 0.05mm. Wossner Compression Ratio: 10.20:1. OEM Compression Ratio: 11.80:1. Dome Volume: -2.60cm&sup3;. Compression Height: 22.80mm. Cross-reference OEM part numbers: Clip CW17, Piston Pin WP083, Replacement Ring Set 760XDS.","attributes":[{"label":"General Product Group","value":"Engine"},{"label":"General Product Type","value":"Pistons & Kits"},{"label":"Variant Id","value":"259115"}],"image":"https://www.oro2u.com/media/catalog/product/s/t/stock58061_1.jpg","images":["https://www.oro2u.com/media/catalog/product/s/t/stock58061_1.jpg","https://www.oro2u.com/media/catalog/product/s/t/stock58061_2.jpg"],"description":"Wossner piston kit set of 4 for R1, FZR, RX1. Features forged Wossner pistons with a +2.00mm oversized bore (76.00mm bore, 75.95mm actual piston diameter). Elliptical design for uniform pressure under thermal expansion, improving durability and reducing mechanical failure risk. Engineered for efficient combustion heat transfer. Made in Germany. Increases engine displacement to 1051cc. Part Number: K8840D200-4. Stroke: 58.00mm. Clearance: 0.05mm. Wossner Compression Ratio: 10.20:1. OEM Compression Ratio: 11.80:1. Dome Volume: -2.60cm&sup3;. Compression Height: 22.80mm. Cross-reference OEM part numbers: Clip CW17, Piston Pin WP083, Replacement Ring Set 760XDS.","descriptionMarkdown":"### Wossner Piston Kit Set for Yamaha R1, FZR, RX1\n\nUpgrade your Yamaha R1, FZR, or RX1 engine with this high-performance Wossner Piston Kit. Engineered for durability and increased displacement, this kit features four forged pistons designed to enhance your motorcycle's power output.\n\n**Key Features:**\n\n \n- Set of 4 premium forged Wossner pistons\n \n- Oversized bore: +2.00mm, resulting in a 76.00mm bore diameter (actual piston diameter 75.95mm)\n \n- Elliptical piston design optimizes thrust load distribution and manages thermal expansion for greater reliability\n \n- Promotes efficient heat transfer from combustion to cylinder walls\n \n- Manufactured in Germany to exacting standards\n \n- Increases engine displacement to 1051cc\n\n**Specifications:**\n\n \n- Part Number: K8840D200-4\n \n- Bore Size: 76.00mm (actual piston size 75.95mm)\n \n- Total Displacement: 1051cc\n \n- Displacement Range Displayed: 998 / 1024 / 1051 cm&sup3;\n \n- Stroke: 58.00mm\n \n- Clearance: 0.05mm\n \n- Wossner Compression Ratio: 10.20:1\n \n- OEM Compression Ratio: 11.80:1\n \n- Dome Volume: -2.60cm&sup3;\n \n- Compression Height: 22.80mm\n\n**Included Components & Replacements:**\n\n \n- Clip: CW17\n \n- Piston Pin: WP083\n \n- Replacement Ring Set: 760XDS","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-r1-fzr-rx1-wossner-k8840d200-4-yamaha","buyOneNow":"https://www.2brosparts.com/api/agent/checkout/GB/83a7bb2ff889:1","basketWithThis":"https://www.2brosparts.com/api/agent/basket/GB/83a7bb2ff889:1"}},"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. 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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."]}}