{"product_id":"crankshaft-bottom-kit-2003-2013-yamaha-yzf250-wiseco-wpc140","title":"CRANKSHAFT BOTTOM KIT 2003-2013 YAMAHA YZF250 WISECO WPC140","description":"\u003cp\u003eA factory-assembled crankshaft kit supplied with main bearings and a gasket set for complete bottom-end service. Precision-trued to OEM specifications, it incorporates advanced surface treatments, lubrication features and tightly controlled clearances to support durability and performance under high-RPM operation.\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003ePrecision-trued to OEM specifications and factory assembled\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eConnecting rods are double-forged to maintain superior dimensional consistency through improved grain flow\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eShot-peened to eliminate residual stresses and smoothly blend rod forging surfaces\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCorrosion-resistant surface treatment\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eTop and bottom end rod bores case-hardened to 58–62 RC to optimise bearing running surface\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCrank pin bearing radial running clearance optimised to ensure maximum performance\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePrecision honing ensures an ultra-round bearing surface\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003ePrecision-engineered oiling slots maximise rod strength and bearing life\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eDouble-drilled small ends provide the piston pin with extra lubrication and cooling, reducing distortion of the top end due to thermal transfer from the piston\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eSilver-coated bronze phosphor thrust washers with dimpled design increase oil retention and reduce friction between rod and washer interface\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eCrank pin bearings manufactured with the highest-quality hot-rolled steel — case-hardened to 58–62 RC\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eManufacturer: Wiseco\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eProduct type: Crankshaft kit with bearings and gaskets\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003eIncluded components: Crankshaft assembly, main bearings, gasket set\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eCross-Reference OEM Part Numbers\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003eWPC140\u003c\/li\u003e\n\u003cbr\u003e\t\u003cli\u003e56-229.WI\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e\u003cbr\u003e\u003cbr\u003e\u003cp\u003e\u003cstrong\u003eVehicle Fitments\u003c\/strong\u003e\u003c\/p\u003e\u003cbr\u003e\u003cbr\u003e\u003cul\u003e\n\u003cbr\u003e\t\u003cli\u003e\n\u003cbr\u003e\t\u003cp\u003eYamaha YZ250F (2003–2013)\u003c\/p\u003e\n\u003cbr\u003e\t\u003c\/li\u003e\n\u003cbr\u003e\n\u003c\/ul\u003e","brand":"ORO2U","offers":[{"title":"Default Title","offer_id":57125481021813,"sku":"56-229.WI","price":606.08,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0555\/5011\/6136\/files\/56-229-wi.jpg?v=1777857651","url":"https:\/\/www.smxoffroad.com\/products\/crankshaft-bottom-kit-2003-2013-yamaha-yzf250-wiseco-wpc140","provider":"SMXOFFROAD Ltd","version":"1.0","type":"link"}