HKS Hi-Power SPEC-R Subaru Impreza WRX STI GDB - 31030-AF001

The HKS Hi-Power SPEC-R, part number 31030-AF001, is a titanium catback exhaust for the Subaru Impreza WRX STI (GH-GDB) with the EJ20 turbo engine.

• Part number: 31030-AF001
• Muffler shape: Dti (Hi-Power SPEC-R)
• Main material: titanium
• Tip diameter: 120 mm
• Center pipe diameter: 75 mm
• Close noise level: 93 dB (stock 84 dB), measured at idle
• Road clearance: 140 mm (lowest point is the center resonator, stock suspension)
• Certification No.: 03S16913
• Fits SPEC-C

Fitment

• Subaru Impreza WRX STI (GH-GDB), EJ20 Turbo, 2004/06 to 2007/06, applied models E and F. (Source: HKS Japan)
• Subaru Impreza WRX STI 4D (GD), EJ257, AWD, 2004 to 2007. (Source: HKS USA)

Resources

• HKS Japan product page
• HKS Japan Hi-Power SPEC-R overview
• HKS USA Hi-Power SPEC-R page

Contact us if you are unsure of fitment or Size HERE