QuadBoss 04-05 Yamaha YFZ450 High-Performance CDI

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

• Includes duplication circuits and optimized ignition advance curves to improve throttle response and power throughout the RPM range
• Raises rev limiter by 1,000 rpm over stock boxes
• All boxes have monocurve technology