These CDI Boxes are designed to unleash the power and enhance overall performance. Includes duplication circuits for maximum reliability, increased RPM redline and altered ignition advance curves to increase performance throughout the RPM range
Fitment:
Yamaha YFM660F Grizzly 4x4 Base 2004
Yamaha YFM660F Grizzly 4x4 Base 2005
Yamaha YFM660F Grizzly 4x4 Base 2006
Yamaha YFM660F Grizzly 4x4 Base 2007
Yamaha YFM660F Grizzly 4x4 Base 2008

