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

Code No. 31029-AF014

A powerful rear view with 4 titanium tales
A beautiful blue gradient Titanium tales fit perfectly bumper cut-outs,
φ75 straight piping without excessive joints allows to achieve overwhelming
low exhaust pressure and a quiet and comfortable ride.

Cert. No. JQR40164204

Model GVB
Engine EJ20(TURBO)
Model Year 10/07 - 14/08
Shape of muffler Ti-1 (Titan)
(Super Turbo Muffler)
Main material S304
Diameter of tip 90 x 2 L&R
Diameter of center pipe 75-60-54(*1)
Close noise level Stock 78
HKS 86
About road clearance(*2) Clearance 125mm
Portion of the kit Mid pipe
Product Weight


Compatible with following models: tS, tS Type RA, SPEC C, not compatible with S206


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.