HKS LEGAMAX Cat-Back Exhaust | 2016-2021 Honda Civic Coupe 1.5T (31021-BH001)

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$1,225.99 $1,430.00Instant Savings of 14% ($204.01)

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2016-2021 Honda Civic Coupe 1.5T LEGAMAX Cat-Back Exhaust by HKS

Legamax Premium mufflers offer the performance benefits of a sports muffler with the class and elegance of a premium muffler. Every tailpipe design is customized per application to ensure that the muffler has impact and becomes a focal point in the appearance of the vehicle, yet blends with the overall design of the car.

Legamax Premium mufflers are constructed of SUS304 grade stainless steel to give a high luster finish that is durable. The new 2016+ Coupe application comes with titanium dual tips. It was designed to be as straight as possible providing a 50% reduction in exhaust back-pressure to support more power modifications.


  • Full straight structure to improve exhaust flow
  • Tested and JASMA approved
  • Made of high-quality SUS304 for durability
  • Back-pressure reduced by 50%
  • Meets standard for Japan's noise level regulation
  • Cat-back system includes Midpipe
  • Center exit design with dual titanium tips
  • Designed to eliminate exhaust drone
  • Made in Japan


  • Horsepower Increase
  • Louder and More Aggressive Exhaust Note

Please Note: Only fits the Civic coupe with the 1.5L engine


  • 2016-2021 Honda Civic Coupe 1.5L (***Will not fit Si***)

What's In The Box?

  • 1 - Exhaust System


  • HKS' Limited Manufacturer's Warranty

Customer Reviews

Based on 2 reviews
Great upgrade!

It looks great! Has a pretty aggressive sound to it. Sound is MUCH better than stock! Drone can be an issue, but not too bad. Overall, I like it a lot!

Derrick Taylor
Definitely an upgrade from stock

In terms of looks and sound,I couldn't be happier. The pictures speak for themselves. The shining stainless steel and vibrant blue polished tips are a much needed step up from the dull stock exhaust. On start up, it sounds like a monster and gradually gets quieter to a low but noticeable growl. Drone isn't much of a problem especially when you hit anywhere above 30mph. Power-wise, there is miniscule increase in performance, but the feel,sound, and look of the catback makes up for that.