Increase the performance and tone of the vehicle by upgrading to a high performance muffler. Improvingthe vehicles exhaust flow will ridthe engine of back pressure, which will increase power and performance. High performance mufflers will not only increase power but will also provide a high performance aggressive sound to the vehicle. HKS has long stood at the forefront of performance products. Their high quality performance products are made in Japan and are a favorite among custom tuners. HKS has improved upon their flagship design of the Legamax Series with the Legamax Premium. The Legamax Premium comes with the trusted Legamax muffler and a vehicle specific tip design. The fully custom tip design provides a flush appearance that is distinct for each vehicle model.

*1: About silencer shell type of Silent Hi-Power
TYPE-S/Oval silencer for noise reduction.
TYPE-H/Round silencer for performance.

*2: Main material in the component figure.

SUS304/High quality stainless steel.
SUH409/Stainless steel commonly used for stock exhaust.

*3: About center pipe
Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.

*4: Minimum road clearance between HKS muffler (Any parts included in the kit) and road surface. Therefore, it may be different from actual road clearance of the vehicle.
The data is basically the condition with stock suspension. However, please understand that some items have data with low down spring or ride height adjustable suspension kit.

Caution: Hook, bracket, stay may be changed without prior notice.

Exhaust noise level at idle.

Diameter of tip- 90mm L&R
Diameter of center pipe 75-69mm

Application: 2015-2021 Subaru WRX / STi (EJ257/FA20) VAF/VAG