{"product_id":"crankshaft-bottom-kit-03-05-yzf450-wiseco-wpc139-yamaha-mx","title":"CRANKSHAFT BOTTOM KIT 03-05 YZF450, WISECO WPC139 YAMAHA MX","description":"\u003cp\u003e\u003cspan style=\"text-decoration:\" underline font-size: small\u003e\u003cstrong\u003eYamaha \u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size:\" small\u003eYZ450F YZF450 2003-2005,\u003c\/span\u003e\u003c\/p\u003e \u003cp\u003eWiseco Crankshaft w\/Bearings and Gaskets - WPC139,\u003c\/p\u003e \u003cp\u003eOverview of Wiseco Crankshaft w\/Bearings and Gaskets - WPC139 Precision-trued to OEM specifications and factory assembled Connecting rods are double-forged to maintain superior dimensional consistency through improved grain flow Shot-peening eliminates residual stresses and smoothly blends the rod forging surfaces Corrosion-resistant surface treatment Top and bottom end rod bores case hardened to 58-62 RC to optimize bearing running surface Crank pin bearing radial running clearance is optimized to ensure maximum performance Precision honing ensures ultra-round bearing surface Precision-engineered oiling slots maximize rod strength and bearing life Double-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of top end due to thermal transfer from the piston Silver-coated bronze phosphor thrust washers with dimpled design increase oil retention and reduce friction between rod and washer interface\u003c\/p\u003e \u003cp\u003ePart No.   56-230.WI   (oro2u.com)\u003c\/p\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57125482004853,"sku":"56-230.WI.CBK","price":661.94,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/56-230-wi-cbk.jpg?v=1777857656","url":"https:\/\/www.smxoffroad.com\/products\/crankshaft-bottom-kit-03-05-yzf450-wiseco-wpc139-yamaha-mx","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}