Best Sounding Catback for WRX | STI
The Subaru WRX | STI is most associated with the famous boxer engine “rumble”. Agency Power has developed numerous aftermarket Subaru parts over the years. One thing that Agency Power has harnessed over the years is the ability to unlock the rumble of the boxer engine while adding power on top with our exhaust systems alone!
The straight-through mufflers improve airflow while increasing horsepower and torque output. The system is manufactured using T304 stainless steel piping in 3-inch diameter from the catback. The piping is all hand polished featuring beautiful TIG welds throughout the entire exhaust. The mid-pipe includes a resonator that aids in keeping the traditional boxer engine sounding mean and aggressive while eliminating drone! The ½ inch thick flanges provide precision and secure fit along with the factory placement exhaust hangers.
Features:
- Aggressive Exhaust Note
- Dyno Proven Performance – 17 AWHP and 28ft/lbs gain
- 3″ T304 Stainless Steel Piping
- Resonated Mid-pipe
- High-Flow Y-Pipe
- Available in either 4″ Dual Titanium tips or Dual 4″ Stainless Steel Tips
See More WRX | STI Parts
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Agency Power Cold Air Intake Kit Subaru WRX STI 2015-2017 2.5L Turbo
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