Super Turbo Muffler IMPREZA WRX STI Explanation of the product Application chart

Code No. 31029-AF008

It's not just the power and quietness!
The muffler sound will not bother people inside car, but once you put the gas it will have sporty sound.
This is the ideal muffler shape!
The φ 75 without the throttling and straight design gives big power and low exhaust pressure and still comfortable sound for the inside of the car.

Cert. No. JQR40124179

Model GVB
Engine EJ20(TURBO)
Model Year 10/07 - 14/08
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 89
About road clearance(*2) Clearance 130mm
Portion of the kit Center pipe
Product Weight


Center Pipe included, [tS] ,[tS Type RA]and [SPEC C] installable. [S206] not installable.


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.