The PowerCore® 4 is designed to increase the horsepower and torque throughout the entire power curve and give you a noticeable power increase that is very usable no matter what your riding style or ability is. Features include space-age internal packing for maximum packing life. High-flow modular end cap. Internal core shape uses high-flow technology. Enhanced sonic evacuation provides for high flow and increased power. Includes removable spark arrestor.

This accessory may be restricted to closed-course competition only.