{"product_id":"hot-rods-crankshaft-part-4138-for-yamaha-yz250x-and-yz250-models","title":"Hot Rods Crankshaft Part #4138 for Yamaha YZ250X and YZ250 Models","description":"\u003cp\u003eUpgrade your Yamaha YZ250 engine with the Hot Rods Part #4138 crankshaft, designed for durability and performance. This crankshaft is a premier alternative to costly OEM components, offering a reliable solution for motorcycle enthusiasts seeking enhanced engine longevity and power. It is sold complete and ready for installation, featuring the original proven Hot Rods connecting rods, top-end bearings, and crankshaft webs. Each crankshaft is factory assembled and trued to OEM specifications, ensuring it meets or exceeds the performance and durability standards of the original equipment.\u003cbr\u003eConstructed with precision, Hot Rods crankshafts are fully rebuildable using genuine Hot Rods connecting rods and bearings. The gears are manufactured to a DIN Class 9 or higher quality level, providing smooth operation and long-lasting reliability. Additionally, this model includes a stroker option, which offers increased stroke for greater displacement and horsepower. The CNC-machined and dynamically balanced design allows for a drop-in replacement that generally requires no modifications, making installation straightforward.\u003cbr\u003eThis crankshaft uses the stock piston in most applications and can be paired with Cylinder Works Big Bore cylinders to achieve significant displacement and horsepower gains. It is ideal for riders looking to boost their Yamaha YZ250's performance without extensive engine modifications, whether for racing or recreational riding. The Hot Rods part #4138 crankshaft is engineered to meet the demands of high-performance motorcycle engines, ensuring enhanced power delivery and engine efficiency for years of reliable service.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eCrankshafts designed for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003ePremier alternative to costly OEM crankshafts\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eSold complete and ready for installation with original Hot Rods connecting rods, top end bearings, and crankshaft webs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFactory assembled and trued to OEM specifications, meeting or exceeding OEM standards\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFully rebuildable with genuine Hot Rods components\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eGears manufactured to DIN Class 9 or higher quality\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes features of standard crankshafts with increased stroke for more displacement and horsepower\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDrop-in replacement requiring no modifications in most applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCNC machined and dynamically balanced for smooth operation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with stock pistons and can be paired with Big Bore cylinders for additional gains\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFits,\u003cbr\u003e\nYamaha YZ250 2003\u003cbr\u003e\nYamaha YZ250 2004\u003cbr\u003e\nYamaha YZ250 2005\u003cbr\u003e\nYamaha YZ250 2006\u003cbr\u003e\nYamaha YZ250 2007\u003cbr\u003e\nYamaha YZ250 2008\u003cbr\u003e\nYamaha YZ250 2009\u003cbr\u003e\nYamaha YZ250 2010\u003cbr\u003e\nYamaha YZ250 2011\u003cbr\u003e\nYamaha YZ250 2012\u003cbr\u003e\nYamaha YZ250 2013\u003cbr\u003e\nYamaha YZ250 2014\u003cbr\u003e\nYamaha YZ250 2015\u003cbr\u003e\nYamaha YZ250 2016\u003cbr\u003e\nYamaha YZ250 2017\u003cbr\u003e\nYamaha YZ250 2018\u003cbr\u003e\nYamaha YZ250 2019\u003cbr\u003e\nYamaha YZ250 2020\u003cbr\u003e\nYamaha YZ250 2021\u003cbr\u003e\nYamaha YZ250 2022\u003cbr\u003e\nYamaha YZ250X 2016\u003cbr\u003e\nYamaha YZ250X 2017\u003cbr\u003e\nYamaha YZ250X 2018\u003cbr\u003e\nYamaha YZ250X 2019\u003cbr\u003e\nYamaha YZ250X 2020\u003cbr\u003e\nYamaha YZ250X 2021\u003cbr\u003e\nYamaha YZ250X 2022","brand":"HOT RODS","offers":[{"title":"Default Title","offer_id":45196371361987,"sku":"421-4138","price":464.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/6052\/2435\/files\/hot-rods-crankshaft-part-4138-for-yamaha-yz250x-and-yz250-models-3456100.jpg?v=1780376665","url":"https:\/\/kellymotorsport.com\/products\/hot-rods-crankshaft-part-4138-for-yamaha-yz250x-and-yz250-models","provider":"Kelly Motorsports","version":"1.0","type":"link"}