HKS Silent Hi-Power Exhaust Subaru WRX/STI GDB E/F 04-07 - 31019-AF015

silent Hi-Power

High quality sound. Sport exhaust system with reduced noise level.

Silent Hi-Power mufflers offer high performance and sporty appearance with the added benefit of reduced noise levels making it the best choice for more mature enthusiasts. Silent Hi-Power mufflers are constructed entirely of SUS304 grade stainless steel for high lustre, long lasting performance. For certain applications, HKS has introduced the "Silent Chamber" which removes a lot of the lower frequency noise that can often be heard into the cabin even when cruising. The silent chamber removes this uncomfortable noise but due to its closed end design, only a minimal amount of exhaust gas flows into it, meaning that the disruption to exhaust gas flow through the entire system is minimized and there is no harm to performance.

Vehicle IMPREZA WRX STI

Model GDB

Engine EJ20(TURBO)

Model Year 04/06 - 07/06

Shape Of Muffler HP (TYPE-S) (silent Hi-Power)

Main Material S304

Diameter Of Tip 120

Diameter Of Centre Pipe 75 (*1)

Close Noise Level Stock 84

Close Noise Level HKS 92

Remarks

For applied model E, F. – Not sure which model you have? Check your Chassis plate “Applied Model” section.

Fits to stock rear under skirt. Not tested for "STi SPEC-C", "SPEC-C WR-Limited 2004".

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.

VIP Motorsport is a UK Stockist of HKS. Items out of stock with us take an average of 3 weeks to be received. We recommend you contact us for a lead time.