HKS 3306-SN007 Hi-Power Exhaust for 2021- Subaru WRX / STI (VA, EJ25)

Vehicle Fitment

• 2021- Subaru WRX (VA, EJ25 2.5L Turbo)
• 2021- Subaru WRX STI (VA, EJ25 2.5L Turbo)

Features

• Constructed from high-quality SUS304 stainless steel for strength and corrosion resistance
• Optimized design for reduced exhaust back-pressure and improved performance
• Dual 90mm tailpipes with HKS signature burnt-tip design for sporty aesthetics
• Enhanced throttle response, turbo spool, and power delivery
• Lightweight construction - significantly reduces weight compared to the stock exhaust
• Produces a rich, aggressive exhaust note with minimal drone, perfect for daily driving and performance enthusiasts
• Easy bolt-on installation with all required hardware included
• Perfect for owners looking for a balance between performance gains and street-legal exhaust noise levels

Specifications

• Material: SUS304 stainless steel (pipes, muffler, tips)
• Pipe size: 65mm (main pipe), 90mm (dual tailpipes)
• Exhaust weight: ~10.5kg (lighter than stock exhaust)
• Tip style: Dual 90mm with polished burnt titanium finish
• Exhaust sound: ~88-90dB (idle proximity) - enhanced sound, compliant with street regulations
• Ground clearance: Approximately 120mm (varies based on suspension setup)
• Installation: Bolt-on, direct fitment with no cutting required

Included Components

• 1x Hi-Power muffler assembly
• 1x Dual 90mm polished burnt titanium tips
• 1x Dual 65mm piping assembly
• All required mounting hardware, gaskets, and hangers

Product Description

The HKS 3306-SN007 Hi-Power exhaust system is designed for the 2021 Subaru WRX and WRX STI models equipped with the EJ25 turbocharged engine. This high-performance exhaust system features a durable SUS304 stainless steel construction, offering significant strength, improved heat resistance, and a long lifespan. The dual-exit, 90mm tailpipes provide a bold, aggressive sound and visual presence, making it the perfect upgrade for any WRX or STI enthusiast.

Designed for bolt-on installation, the HKS 3306-SN007 allows easy setup without the need for welding or cutting. The system is engineered to reduce exhaust backpressure, improving turbo response and throttle feel, while the lightweight design helps reduce overall vehicle mass, benefiting handling and acceleration. Whether you're looking for performance gains, improved sound, or a more aggressive look, the Hi-Power exhaust system delivers all of these in one package. This system is ideal for daily drivers and performance cars alike, providing a balance of power and street-legal exhaust noise levels.