Hot Rods Stroker Crankshaft for Yamaha YFM660FG & YXR660F Models

The 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.

The 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.

Whether 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.

Features:

• Crankshafts sold complete and ready for installation with original Hot Rods connecting rods, top-end bearings, and crankshaft webs

• Factory assembled and trued to OEM specifications, meeting or surpassing OEM performance and durability

• Fully rebuildable with genuine Hot Rods components

• Gears manufactured to DIN Class 9 or higher standards

• Includes all features of standard crankshafts with added benefits

• Increased stroke for higher displacement and horsepower

• Drop-in replacement requiring no modifications in most applications

• CNC machined and dynamically balanced for increased stroke

• Uses stock piston in most applications

• Compatible with Cylinder Works Big Bore cylinders for significant power gains

Fits,
Yamaha YFM660FG Grizzly 4WD [IRS] 2002
Yamaha YFM660FG Grizzly 4WD [IRS] 2003
Yamaha YFM660FG Grizzly 4WD [IRS] 2004
Yamaha YFM660FG Grizzly 4WD [IRS] 2005
Yamaha YFM660FG Grizzly 4WD [IRS] 2006
Yamaha YFM660FG Grizzly 4WD [IRS] 2007
Yamaha YFM660FG Grizzly 4WD [IRS] 2008
Yamaha YXR660F Rhino 660 2004
Yamaha YXR660F Rhino 660 2005
Yamaha YXR660F Rhino 660 2006
Yamaha YXR660F Rhino 660 2007