Super Turbo Muffler

Code No. 31029-AF011



Not Just Powerful Performance with Quiet Sound!
Once stepping on the accelerator pedal, dry sporty exhaust sound is heard throughout the comfortable vehicle's interior.

Pursuit of the Ideal Exhaust System
φ75 straight structure generates lowest exhaust pressure possible whilst maintaining comfort within the interior.









Cert. No. JQR40144246 EJ20t
Vehicle WRX STI
Model VAB
Engine EJ20(TURBO)
Model Year 14/08 - 20/04
Shape of muffler SSR
(Super Turbo Muffler)
Main material S304
Diameter of tip 124 L&R
Diameter of center pipe 75-60 x 2 (*1)
Close noise level Stock 78
HKS 85
About road clearance(*2) Clearance 125mm
Portion of the kit Center pipe
Product Weight

Includes Center pipe. Not compatible with S207, S208 and, TYPE RA-R.
* Silver color exhaust tip. (not burnt blue)


About HKS muffler

*1: 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.

*2: 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.