{"product_id":"oro2u-56-w4733-00a-wo-d8e45f62","title":"Piston Kit KTM 400 Exc 89.00, Forged Wossner 8580DA 57530007000","description":"\u003cp\u003ePiston Kit KTM 400 Exc 89.00, Forged Wossner 8580DA 57530007000. Find the product specifications and compatibility information below.\u003c\/p\u003e\u003ch3\u003eProduct details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProduct: Piston Kit KTM 400 Exc 89.00, Forged Wossner 8580DA 57530007000\u003c\/li\u003e\n\u003cli\u003ePart number: 56-W4733+00A.WO\u003c\/li\u003e\n\u003cli\u003eBrand: Wossner\u003c\/li\u003e\n\u003cli\u003eWossner forged piston kit designed for high-performance applications, offering superior strength and optimized heat transfer. The elliptical design ensures a uniform bearing surface under heat expansion, reducing localized pressure and preventing piston collapse. Manufactured in Germany for precision and durability.\u003c\/li\u003e\n\u003cli\u003eForged piston for enhanced strength and durability\u003c\/li\u003e\n\u003cli\u003eOptimized heat transfer to cylinder walls for improved performance\u003c\/li\u003e\n\u003cli\u003eElliptical design for even thrust load distribution\u003c\/li\u003e\n\u003cli\u003eManufactured in Germany\u003c\/li\u003e\n\u003cli\u003eBore Size: 89mm\u003c\/li\u003e\n\u003cli\u003eActual Bore: 88.94mm\u003c\/li\u003e\n\u003cli\u003eDisplay (cm³): 398\u003c\/li\u003e\n\u003cli\u003eStroke (mm): 64.00\u003c\/li\u003e\n\u003cli\u003eClearance (mm): 0.06\u003c\/li\u003e\n\u003cli\u003eWossner Compression Ratio: OEM\u003c\/li\u003e\n\u003cli\u003eOEM Compression Ratio: 11.00:1\u003c\/li\u003e\n\u003cli\u003eDome Volume (cm³): +7.00\u003c\/li\u003e\n\u003cli\u003eCompression Height (mm): 27.50\u003c\/li\u003e\n\u003cli\u003eTheoretical Weight: N\/A\u003c\/li\u003e\n\u003cli\u003eLock Part Number: CW20\u003c\/li\u003e\n\u003cli\u003ePin Part Number: WP038\u003c\/li\u003e\n\u003cli\u003eRing Set Part Number: 890XSY\u003c\/li\u003e\n\u003cli\u003ePart Number: 56-W4733+00A.WO\u003c\/li\u003e\n\u003cli\u003eCross-Reference OEM Part Numbers\u003c\/li\u003e\n\u003cli\u003e57530007000\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eVehicle fitment\u003c\/h3\u003e\u003cp\u003eApplications listed in the supplier fitment data:\u003c\/p\u003e\u003cul\u003e\u003cli\u003eKTM LC4 400cc — 1998–2001\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003eMatch your exact make, model, year and specification before ordering.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003eWhy buy from FDY Performance?\u003c\/h3\u003e\u003cp\u003eFDY Performance is a UK motorcycle and ATV parts specialist. We help riders find parts with clear specifications, vehicle fitment information where available and support before ordering.\u003c\/p\u003e\u003ch3\u003eNeed help choosing the right part?\u003c\/h3\u003e\u003cp\u003eContact us with your bike make, model and year, plus the part number shown above, and we can help you check compatibility.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCall: \u003ca href=\"tel:+447765534854\"\u003e07765 534854\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eEmail: \u003ca href=\"mailto:fdy@fdyperformance.com\"\u003efdy@fdyperformance.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eWebsite: \u003ca href=\"https:\/\/www.fdyperformance.com\"\u003ewww.fdyperformance.com\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wossner","offers":[{"title":"Default Title","offer_id":59663767699804,"sku":"56-W4733+00A.WO","price":221.05,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0866\/6982\/0252\/files\/stock54926_1.jpg?v=1793120263","url":"https:\/\/fdyperformance.com\/products\/oro2u-56-w4733-00a-wo-d8e45f62","provider":"FDY performance Ltd","version":"1.0","type":"link"}