HKS Legamax Premium Cat-Back Exhaust - 2016+ Honda Civic Coupe

Regular price $1,430.00 USD $1,118.26 USD

Ready To Ship! Special Order! Ships in 10+ weeks

Part # hks31021-BH001

Legamax Premium mufflers offer the performance benefits of a sports muffler with the class and elegance of a premium muffler. Every tail pipe design is customized per application to ensure that 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 which is durable. The new 2016+ Civic Coupe application comes with titanium quad tips. It was designed to be as straight as possible providing a 50% reduction in exhaust back-pressure to support more power modifications.

  • Honda Civic [FC3 - Coupe non Si] (2016, 2017, 2018, 2019, 2020)

***Base Civic Coupe only with 1.5L Engine***



  • 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
  • Dual exit design with quad titanium tips
  • Made in Japan

Extended Information

  • Type: Cat-Back Exhaust
  • Piping Diameter: 60mm to dual 50mm
  • Tip Diameter: Quad 75mm
  • Material: SUS304 Stainless Steel Piping
  • Chassis Codes: FC3
  • Engine Code: L15B
  • Idle Sound: 58 db (stock 52 db)
  • Sound: 84 db (stock 71 db)
  • Pieces: 4-Piece System
  • Notes: Same ground clearance as OEM
  • Warranty: Manufactures Warranty

Customer Reviews

Customer Reviews

Based on 2 reviews
Fredy U. (Los Angeles, CA, US)
HKS 31021-BH001 exhaust system for Honda Civic EX-T coupe 2016

It's perfect I like the sound and how it looks 😎

Steven G.
Superb Style and Performance

3 long months I waited for this exhaust system and I can honestly say it was well worth it. Not only does it sound great, but it performs better than expected and looks incredible.

Definitely a recommended upgrade for all Honda owners out there.

Customer Questions


In stock, non special order items can be returned within 30 days of the product arriving to your house or place of work.
Returns will NOT be accepted on Clearance Items, Final Sales, Special Orders, Opened, Installed, Incomplete, or Otherwise Used Products. In order to initiate a return, an RMA number must be requested and approved via e-mail.
All returns will be subject to a 20% restocking fee minus complete shipping cost (roundtrip).

Any processed orders that have not shipped will incur a 6% cancelation refund fee unless the product was not available to ship within a timely manner. No fee will be incurred if used as store credit.

For complete details on our return policy, please see our Help and FAQ link under HELPFUL INFO.

All international orders outside of the USA are subject to duties and taxes per your countries jurisdiction and determined by customs.
Kami Speed serves the right to ship using an alternative method if we see it fit, in order to expedite shipping and reduce your rate depending on product value.