silent Hi-Power

Code No. 31019-AF024






Cert. No. 03S04468
Model SG9
Engine EJ25(TURBO)
Model Year 04/02 - 07/11
Shape of muffler HP (TYPE-S)
(silent Hi-Power)
Main material S304
Diameter of tip 120
Diameter of center pipe 75 (*1)
Close noise level Stock 80
HKS 88
About road clearance(*2) Clearance 160mm
Portion of the kit Main pipe
Product Weight

* Discontinued.  For "STi rear under spoiler" and "rear bumper skirt of CROSS SPORTS". Fits to 05/05- late model.


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.