Magnum FORCE Stage-2Si P RO 5R Cold Air Intake Sy

The Magnum FORCE Stage-2Si P RO 5R Cold Air Intake System by AFE POWER is engineered for drivers seeking measurable gains in horsepower, torque, and throttle response without sacrificing daily drivability. This intake system replaces the restrictive factory airbox with a tuned cold-air design that draws cooler, denser air from outside the engine bay—a critical advantage since cold air molecules contain more oxygen for combustion. Whether you're building a street car, weekend track machine, or looking to maximize fuel efficiency through improved combustion, this Stage-2Si platform delivers real-world performance gains that justify the investment in quality aftermarket tuning.

AFE POWER's Stage-2Si design incorporates a mandrel-bent intake tube, high-flow air filter media, and precision intake runners optimized for your vehicle's specific airflow characteristics. The Pro 5R filter element uses a washable, reusable design, reducing long-term maintenance costs while maintaining maximum airflow compared to restrictive OEM designs. The sealed intake path prevents hot engine bay air from entering the system, ensuring sustained temperature-critical performance during spirited driving or extended highway use. Installation is straightforward for mechanics with basic hand tools—the system bolts to existing engine mounting points without requiring modifications to brackets, hoses, or secondary components.

This intake system is ideal for owners committed to reliable performance upgrades on naturally aspirated engines where every cubic foot per minute of airflow matters. The Stage-2Si Pro 5R configuration balances peak power delivery with street-driven longevity—no aggressive camshaft timing compensation required, making it compatible with factory or mildly modified engine management. Expect 8–15 horsepower gains on most platforms, depending on displacement, fuel quality, and existing modifications. The reusable filter element is serviceable in under five minutes, supporting long-term ownership without recurring filter purchases. Fitment verification with your specific vehicle's year, make, and model is recommended before purchase to ensure proper clearance and inlet sealing.