Invidia - R400 Cat back Exhaust - (WRX/STi 11-21 Sedan)

In the rangePart no. HS15STIAGM4SS

Does it fit?

Claimed gain: 17hp, 26ft-lb torque
Diameter: 76mm
Thickness: 1.5mm
Fits: GR-GV Impreza WRX STI (2008–2014), VA WRX / STI (2014–2021)
Category: Intake & exhaust

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We can’t take an order yet — supply is still being arranged. Ask, and we will tell you what we know about it and let you know when it is available. What people ask for is what we range first.

Fitment is confirmed, not guessed
A chassis is listed only where the part is on one of our cars or on the manufacturer’s own application list.
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Specifications

Brand: Invidia
Part number: HS15STIAGM4SS
Claimed gain: 17hp, 26ft-lb torque
Diameter: 76mm
Thickness: 1.5mm
Material: SS304 stainless steel
Tips: Quad straight cut stainless steel
Fits: GR-GV Impreza WRX STI (2008–2014), VA WRX / STI (2014–2021)
Category: Intake & exhaust

Figures as published for this part; fitment is only what we have confirmed. Check critical dimensions against your car before ordering.

About this part

Invidia's R400 cat-back exhaust (HS15STIAGM4SS) fits WRX and STI sedans from 2011 to 2021, spanning the GR-GV and VA generations. It's SS304 stainless at 76mm diameter and 1.5mm wall thickness, finished with quad straight-cut stainless tips. Invidia quotes a 17hp and 26ft-lb torque gain for the system, built on a straight-through design that trades backpressure for a harder edge to the exhaust note.