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Genuine HKS exhaust. Manufacturer part number - 31021-AF021.
FITMENT AND SPECIFICATIONS
| Manufacturer product | Model | Engine | Production | Part number |
|---|---|---|---|---|
| LEGAMAX Premium | GVF | EJ25(TURBO) | 10/07 -14/08 | 31021-AF021 |
| LEGAMAX Premium | GVB | EJ20(TURBO) | 10/07 -14/08 | 31021-AF021 |
| Shape of muffler | RM (Titan) (LEGAMAX Premium) |
|---|---|
| Main material | S304 |
| Diameter of tip | 90 x 2 L&R |
| Diameter of center pipe | 54 (*1) |
Match the chassis, engine, transmission and application restrictions before ordering. Production dates are shown in the manufacturer table.
PURCHASED PARTS PACKAGE
One HKS exhaust supplied under manufacturer part number 31021-AF021.
INSTALLATION AND OPTIONS
Follow the manufacturer installation instructions and the application notes above. Confirm supporting parts and any separately required components for the vehicle specification.

HKS LEGAMAX Premium Exhaust Subaru Impreza WRX STI (GVB / GVF) 31021-AF021

