Nitrous Express 4150 4-BBL/Alcohol Nitrous Kit (100-500HP) w/15lb Bottle (50045-15) 1701 The original OEM B58 heat

The original OEM B58 heat exchanger is a 1-row unit that is 27mm thick

This guarantees the very best exhaust flow

2 CarreraXperTune Performance Software with Handheld Tuner(Optional Upgrade) -Recommended to optimize engine performance for the additional horsepower and torque

Injen Technology has done it once again with this new short ram air intake for the 2018-2021 Subaru WRX STI Equipped with the H4-2

Directly replace your RAM's restrictive plastic charge pipe with aFe POWER's BladeRunner free-flowing

Nitrous Express 4150 4-BBL/Alcohol Nitrous Kit (100-500HP) w/15lb Bottle (50045-15) 1701 The original OEM B58 heatThe conventional Pro Power is the perfect mid level nitrous system for the budget minded sportsman racer. These systems feature the most advanced technology using the conventional spraybarless design. The Phase 3 series plates are the Next Generation in nitrous performance and reliability. This new innovation in nitrous plate technology provides superior distribution and outstanding atomization. With no spray bars to sag, split, block airflow, or