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 and beneficial, 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 higher flow and increased power. Includes removable spark arrestor. 97.5 dbA sound level. 95.5 dBA with QuietCore™ Spark Arrestor Insert (33D-E46C0-T0-00), sold separately.

This accessory is restricted to closed-course use