{"product_id":"hot-rods-stroker-crankshaft-for-yamaha-yfm660fg-yxr660f-models","title":"Hot Rods Stroker Crankshaft for Yamaha YFM660FG \u0026 YXR660F Models","description":"\u003cp\u003eThe Hot Rods Part Number 4180 Stroker Crankshaft offers a high-performance upgrade for Yamaha YFM660FG Grizzly and YXR660F Rhino models from 2002 to 2008. Designed as a cost-effective alternative to OEM crankshafts, this complete assembly comes ready for installation, featuring proven Hot Rods connecting rods, top-end bearings, and crankshaft webs. Each crankshaft is factory assembled and trued to OEM specifications, ensuring reliable performance and durability that meet or exceed original factory standards. Fully rebuildable with genuine Hot Rods components, this crankshaft provides a solid foundation for enhancing your ATV's power output and longevity.\u003c\/p\u003e\u003cp\u003eThe stroker version of this crankshaft includes all the features of the standard model but adds increased stroke to boost displacement and horsepower. CNC machined and dynamically balanced to accommodate the increased stroke, this drop-in replacement requires no modifications in most applications and uses the stock piston in most cases. Pairing this crankshaft with Cylinder Works Big Bore cylinders can significantly increase both displacement and engine power, making it ideal for enthusiasts seeking substantial performance gains. Gears are manufactured to DIN Class 9 standards or higher, ensuring precise engagement and durability for demanding operations.\u003c\/p\u003e\u003cp\u003eWhether you're restoring your ATV or seeking to increase its performance capabilities, the Hot Rods Stroker Crankshaft provides a reliable and efficient solution. Its compatibility with multiple Yamaha models and the ability to utilize stock pistons make it a versatile choice for custom builds or performance upgrades. Trusted for quality and engineered for performance, this crankshaft is a valuable upgrade for serious ATV enthusiasts.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eCrankshafts sold 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 surpassing OEM performance and durability\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 standards\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncludes all features of standard crankshafts with added benefits\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eIncreased stroke for higher 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 increased stroke\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eUses stock piston in most applications\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eCompatible with Cylinder Works Big Bore cylinders for significant power gains\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFits,\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2002\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2003\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2004\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2005\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2006\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2007\u003cbr\u003e\nYamaha YFM660FG Grizzly 4WD [IRS] 2008\u003cbr\u003e\nYamaha YXR660F Rhino 660 2004\u003cbr\u003e\nYamaha YXR660F Rhino 660 2005\u003cbr\u003e\nYamaha YXR660F Rhino 660 2006\u003cbr\u003e\nYamaha YXR660F Rhino 660 2007","brand":"HOT RODS","offers":[{"title":"Default Title","offer_id":45196370870467,"sku":"421-4180","price":742.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0673\/6052\/2435\/files\/hot-rods-stroker-crankshaft-for-yamaha-yfm660fg-yxr660f-models-2411487.jpg?v=1780372162","url":"https:\/\/kellymotorsport.com\/products\/hot-rods-stroker-crankshaft-for-yamaha-yfm660fg-yxr660f-models","provider":"Kelly Motorsports","version":"1.0","type":"link"}