HKS Silent Hi-Power Exhaust System Fits Subaru Impreza WRX GDA/GGA/GDB (EJ20T)31019-AF023
HKS Stainless Steel Silent Hi-Power Exhaust System - Subaru WRX GDA/GDB (EJ20T)
For orders dispatched from/within Australia we use the services of, Border Express, Australia Post Registered & Express, and local couriers for Sydney Metro deliveries.
Please note that in some circumstances we are not able to use your chosen shipping method.
For international orders we use the services of DHL/UPS. Please note that International Orders require longer processing times and may take up to 1-2 days to ship if the item is in stock.
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.
Silent chamber for some vehicles.
Straight structure has a characteristic that is easy to eliminate high frequency sound. However, it is difficult to control low frequency uncomfortable sound that can be heard in the cabin. Silent chamber can reduce this low sound.
In addition, because of the closed inside structure, exhaust gas does not through inside silent chamber and exhaust gas resistance is less. Therefore, there is no performance difference even silent chamber is equipped.
- "JASMA" approved.
- The material is SUS304 for improvement of appearance and durability.
- Proven "Advantex* glass wool" (Continuous fiber glass wool).
- Hollow hook and pressed flange for some vehicles to reduce weight.
- Redesigned inner structure of silencer to improve performance and appearance.
Muffler Type: HP TYPE S (Silent High Power)
Materials: High Quality Stainless Steel (S304)
OD Tail (mm): 120
Diameter Pipe (mm): 75
Noise Level (Near Exhaust): 90dB (Stock 82dB)
Diameter of center pipe is the portion that has the largest diameter. (Excluding silencer and tip.) It is the condition with stock suspension.
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.
Hook, bracket, stay may be changed without prior notice.
Exhaust noise level tested at idle.
- Subaru Impreza WRX GDA 08/00~10/02 (EJ20T)
- Subaru Impreza WRX GGA (08/00~10/02 (EJ20T)
- Subaru Impreza WRX GDB STi 10/00~05/04 (EJ20T)
Availability 60-90 Days
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