HKS Hi-Power SPEC-R Exhaust
For applied model E, F. Fits to "SPEC-C".
Hi-Power Spec R mufflers are designed for no compromises whilst still maintaining a reasonable noise level for street use. In the pursuit of absolute efficiency, a one piece design was utilized and titanium was chosen as the preferred material due to it its incredible lightweight properties and durability against the weathering and long term use. Hi-Power Spec R mufflers are on average 65% lighter than the manufacturer's standard muffler system and the single piece design reduces the inefficiencies that can be found at joints whilst allowing for the straightest possible design.
- The main material is lightweight and durable titanium.
- Each part is reviewed to lighten its weight. It achieves 65% lighter than stock exhaust system.
- There is no gap at flange portions because of the one piece design. The straight structure prevents resistance against exhaust gas flow and increases horsepower.
- 2 layer design of tip prevents burning of bumper and has premium looking as street use model.
- "JASMA" approved.
| Cert. No. | 03S06002 |
| Vehicle | IMPREZA |
| Model | GDB |
| Engine | EJ20(TURBO) |
| Model Year | 04/06 - 07/06 |
| Shape of muffler | Dti (Hi-Power SPEC-R) | |
| Main material | Ti(*2) | |
| Diameter of tip | 120 | |
| Diameter of center pipe | 75(*3) | |
| Close noise level | Stock | 84 |
| HKS | 93 | |
| About road clearance(*4) | Clearance | 140mm |
| Portion of the kit | Center resonator | |
| Remarks | ||
For over 40 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 40+ years.
This product is compatible with the following vehicles
| Vehicle Make | Vehicle Model | Vehicle Variant | From | To | Engine | Notes |
| Subaru | Impreza | WRX | 2004 | 2004 | EJ201 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | STi | 2004 | 2004 | EJ20 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | WRX | 2004 | 2004 | EJ20 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | STi | 2004 | 2004 | EJ207 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | WRX | 2004 | 2004 | EJ207 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | STi | 2004 | 2004 | EJ205 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | WRX | 2004 | 2004 | EJ205 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | STi | 2004 | 2004 | EJ201 | 2.0L WR1 - 4WD Petrol |
| Subaru | Impreza | STi | 2005 | 2005 | EJ201 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | WRX | 2005 | 2005 | EJ201 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | STi | 2005 | 2005 | EJ20 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | STi | 2005 | 2005 | EJ207 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | WRX | 2005 | 2005 | EJ20 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | WRX | 2005 | 2005 | EJ207 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | STi | 2005 | 2005 | EJ205 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | WRX | 2005 | 2005 | EJ205 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | STi | 2005 | 2005 | EJ204 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | WRX | 2005 | 2005 | EJ204 | 2.0L Prodrive - 4WD Petrol |
| Subaru | Impreza | STi | 2006 | 2006 | EJ20G | 2.0L S204 - 4WD Petrol |
| Subaru | Impreza | STi | 2006 | 2006 | EJ20K | 2.0L S204 - 4WD Petrol |
| Subaru | Impreza | STi | 2006 | 2006 | EJ205 | 2.0L S204 - 4WD Petrol |
| Subaru | Impreza | STi | 2006 | 2006 | EJ207 | 2.0L S204 - 4WD Petrol |
Whether it is engine, exhaust, suspension, or drive-train systems, there is no substitute for the performance, quality and reliability of HKS. Part-Box/Co-ordSport are an approved distributor for HKS performance and tuning products.
For over 35 years, HKS products have been put to the test in drag racing, road racing, rallying, and top speed trials. HKS equipped vehicles have captured numerous racing championships and hold claim to a myriad of competition records using many “off the shelf”, race proven HKS components. As a result, HKS has been synonymous with “performance” in the automotive aftermarket industry for the past 35+ years.
