Over 1,000 hours of R&D for optimized airflow and maximum power gains

Features

• Over 1,000 hours of R&D for optimized airflow and maximum power gains
• Fully CAD-designed for superior fitment and faster installs
• 1 7/8" primaries stepped to 2" for higher flow and big-motor support
• Larger, optimized merge collector for stronger scavenging and power
• Average +10 horsepower and +12 ft-lbs torque over stock
• 23-27 lbs weight savings over stock
• Handcrafted in Denver, North Carolina, USA
• Backed by our Lifetime Warranty