{"product_id":"piston-kit-4-77-00-comp-13-1yamaha-yzf1000-wossner-k8752da-4","title":"Piston KIT\/4 77.00 Comp 13:1YAMAHA YZF1000 Wossner K8752DA-4","description":"\u003cp\u003eThe Wossner K8752DA-4 piston kit is a standard-size forged piston set designed for Yamaha R1 YZF1000 models from 2004 to 2006. With a 77.00mm bore and a raised compression ratio of 13.5:1, this high-performance kit enhances power output and combustion efficiency for demanding four-stroke applications. Manufactured in Germany, it includes four pistons along with all necessary installation components.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eForged high-performance pistons with skirt coating\u003c\/li\u003e \u003cli\u003eElliptical design promotes uniform thermal expansion and balanced load distribution\u003c\/li\u003e \u003cli\u003eEngineered for optimised heat transfer from combustion chamber to cylinder walls\u003c\/li\u003e \u003cli\u003eDesigned for high-compression four-stroke engines\u003c\/li\u003e \u003cli\u003eIncludes piston pins, clips, and rings\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBore size: 77.00mm (Standard)\u003c\/li\u003e \u003cli\u003eMeasured bore: 76.96mm\u003c\/li\u003e \u003cli\u003eDisplay displacement: 998 \/ 1023 cm³\u003c\/li\u003e \u003cli\u003eStroke: 53.60mm\u003c\/li\u003e \u003cli\u003eClearance: 0.04mm\u003c\/li\u003e \u003cli\u003eCompression ratio: 13.5:1\u003c\/li\u003e \u003cli\u003eOEM compression ratio: 12.5:1\u003c\/li\u003e \u003cli\u003eDome volume: –4.70 cm³\u003c\/li\u003e \u003cli\u003eCompression height: 22.80mm\u003c\/li\u003e \u003cli\u003eQuantity: 4 pistons per kit\u003c\/li\u003e \u003cli\u003eMade in Germany\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePart No. 56-W9876.000.WO\u003c\/li\u003e \u003cli\u003eClip: CW17\u003c\/li\u003e \u003cli\u003ePiston Pin: WP0111\u003c\/li\u003e \u003cli\u003eRing Set: 770XAS-2\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e \u003cp\u003eYamaha R1 YZF1000 2004–2006\u003c\/p\u003e \u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":57506691055996,"sku":"56-W9876.000.WO","price":878.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/3952\/8167\/files\/stock57971_1.jpg?v=1790486829","url":"https:\/\/radhouse.co.uk\/products\/piston-kit-4-77-00-comp-13-1yamaha-yzf1000-wossner-k8752da-4","provider":"Radhouse","version":"1.0","type":"link"}