HKS Hi-Power specR B GDB(E) EJ20

This is the HKS Hi-Power specR B cat-back exhaust system, specifically designed for the GDB(E) chassis with the EJ20 engine. If you're looking to enhance the sound and performance of your Subaru WRX or STI from that era, this exhaust is built to make a notable difference. It replaces the factory exhaust from the catalytic converter back, improving exhaust flow and giving your car a more aggressive tone.

The Hi-Power specR B is constructed from SUS304 stainless steel, a well-known material for its strength and resistance to corrosion, which is crucial for an exhaust system that endures road salt, moisture, and heat cycles. The large-diameter piping and the specially designed muffler work together to reduce backpressure, allowing the EJ20 engine to breathe more freely. This can lead to improved throttle response and a more satisfying exhaust note that’s deeper and more pronounced than stock, without being overly raspy or droney at cruising speeds. The specR B designation often indicates a focus on a specific sound profile and performance characteristic that HKS has tuned for this application.

When installing this cat-back system, you can expect a direct fitment onto the factory catalytic converter outlet, meaning no welding or cutting is typically required for the main components. The system includes the necessary piping and the muffler assembly. While the factory catalytic converter remains in place, this exhaust will significantly change the sound and feel of your vehicle's exhaust system. It’s a popular choice for enthusiasts looking for a well-built, performance-oriented exhaust from a reputable brand like HKS.