Magnum Force Super Stock Intake System (55-12541) by aFe. Filter Series: Pro Dry S. HP Gain: +18 hp. TQ Gain: +30 lbs. x ft. Includes: Air Filter, 3 1/2 Wrinkle Black Tube, Silver Bullet Throttle Body Spacer. The Super Stock Air Intake System is the easy and economical way to improve engine performance. It includes a direct replacement Pro 5R air filter to increase airflow from the air box, and a free-flowing, tuned intake tube to smooth and improve airflow to your engine. Increased airflow enables your engine to make more power and gain fuel mileage, with better throttle response.