Best Downpipes for the GR Supra MK5: 5 Top Picks Compared
For the 2020–2026 GR Supra (MK5), the downpipe decision is really a catalyst decision: every pick in this guide keeps a catalytic converter, from the aFe Twisted Steel Catted Street Series ($951) and the Wagner Tuning kit ($1,090) through the two ETS catted options ($1,195 each) to the AMS Street Downpipe with its ultra-high-flow GESI converter ($1,635). Every pick is an active listing for the A90/A91 car, and each section links straight to its product page.
Why catted? The downpipe is the first restriction after the turbo, and it is also where the car's emissions hardware lives. A catted downpipe is the street-car answer: more flow than stock with a converter still in the system. Check the exact listing notes for your year and trim before ordering — and note that a downpipe change is normally paired with a tuning conversation, not treated as a bolt-on afterthought.
1. aFe Twisted Steel Catted, Street Series — $951
The entry point: aFe's Twisted Steel Catted Down Pipe, Street Series, $951, is the least expensive catted option in our catalog for the 2020+ Supra — the pick that frames this whole list's value end.
2. Wagner Tuning Downpipe Kit — $1,090
The German option: Wagner Tuning's downpipe kit for the 2020–2026 Supra MK5, $1,090, sits between the aFe and the ETS pair on price. Read the listing's configuration notes carefully — downpipe kits vary in what is included, and this is the section where the details matter most.
3. ETS Catted Downpipe, For OEM Sized Catback — $1,195
The fitment-specific pick: ETS lists this catted downpipe, $1,195, explicitly for OEM-sized cat-backs — the one to choose when the rest of your exhaust is staying stock-diameter. ETS is also the brand behind the 3.0-inch Supra exhaust system in our catalog, so the pairing logic is straightforward.
4. ETS GESI Catted Downpipe, 4-Inch Pro Series — $1,195
Same price, different brief: the 4-inch Pro Series downpipe, $1,195, uses a GESI catalytic converter — the high-flow converter family that also appears in the AMS pick below — for builds planning beyond stock-diameter exhaust work. Choose between the two ETS pipes by the cat-back you run, not by the sticker.
5. AMS Street Downpipe, GESI Converter — $1,635
The premium street pick: AMS Performance's Street Downpipe with ultra-high-flow GESI catalytic converter, $1,635, is listed for the 2020+ MKV A90 and is the buy-once option in this group. Above it, our catalog's ceiling is Akrapovic: the stainless down pipe with cat for cars without OPF/GPF, $2,898.66 — note that fitment qualifier before considering it.
Finish the build
A downpipe is half an exhaust: pair it with our GR Supra cat-back exhaust guide and set the stance with the GR Supra coilover guide. Our own finishing piece is the JDMuscle V1 carbon fiber duck bill for the 2020+ Supra, from $339.