HKS Legamax Premium Cat-Back Exhaust - 2015+ WRX / STI

Regular price $1,555.40 USD $1,216.32 USD

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

Part # hks31021-BF001

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. Some applications also incorporate the latest automotive fashion trends by featuring titanium tail tips which adds to the premium appearance with its distinct look.

  • Subaru WRX [VAG] (2015, 2016, 2017, 2018)
  • Subaru WRX STi [VAB] (2015, 2016, 2017, 2018)


  • Optimized tip for each vehicle model
  • Tested and JASMA approved
  • Made of high quality SUS304 for durability
  • Proven "Advantex* glass wool" technology
  • Meets standard for Japan's noise level regulation
  • Includes Midpipe
  • Twin Dual tip mufflers
  • Made in Japan

Extended Information

  • Type: Dual Cat-Back Exhaust
  • Piping Diameter: 75mm to dual 60mm
  • Tip Diameter: Dual 90mm
  • Material: SUS304 Stainless Steel Piping
  • Chassis Codes: VAG & VAB
  • Engine Code: FA20 & EJ20
  • Decibel Level: 83 db (stock 82 db)
  • Notes: N/A
  • Warranty: Manufactures Warranty

Customer Reviews

Customer Reviews

Based on 3 reviews
Patrick C.
HKS Legamax

This exhaust is more on the mature side as far as sound goes. Just what I was looking for. However, the rumble comes out a bit and it sounds great. Deeper than stock. Quality is excellent. Made in Japan. Kamispeed has excellent customer service. The exhaust came in about 7 days. I wish it could have been free shipping for Hawaii. Overall a smooth purchase. Thanks Kamispeed!

Kirk H.
HKS Legamax Premium Cat-Back Exhaust LEGAMAX

What a great way to business, Josh was very helpful took care of all of my questions and ship the product out right away. Fit and finish was great it took me an hour to install. Thank you for having such great service.
Aloha Kirk

stock 15 wrx w/ legamax prem exhaust

stock 15 wrx w/ legamax prem exhaust

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.