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HKS Legamax Premium Cat Back Exhaust System
2015+ WRX / 2015+ STI
Ships for free in the 48 states
Legamax and Sport Exhaust Systems are designed to reduce backpressure and increase exhaust flow for greater peak power and a broader torque band. Each Legamax and Sport Exhaust application utilizes a specific muffler design and shape along with the appropriate piping diameter to maintain low-end torque while maximizing high-end horsepower. All Legamax systems are made from polished SUS304 stainless steel piping.
- 3" to split 2.4" piping
- Four 3.54" exhaust tips
- 83dB vs stock 82dB (stock STI)
|Additional Warranty Information||None|
HKS Legamax Premium Cat Back Exhaust System / 31021-BF001 Fits
2 customer reviews
If you're looking for a quiet cat-back system this is it!
Just installed on my 2018 STI, everything needed for the install was included, exhaust looks, and fits great. Install was very easy, only took me about 20 min. Overall the exhaust is quiet as stock at idle, with the sound level picking up to about 10 DB louder around 1200 rpm and maintains that slightly louder tone throughout the rev range.
I love this exhaust! With stock cat its actually quieter then stock at Idle it does get "louder" and sound amazing when you floor it!