Two Step Downpipe for FK8/FL5 Type R/DE5 Type S/Accord 2.0T

Two Step Performance Catted Downpipe - FK8/FL5 Civic Type R, Integra Type S & Accord 2.0T

If you're only going to do one thing to your 2.0T's exhaust, make it the downpipe. The factory one is the biggest cork in the whole system, and pulling it off is the mod you feel the most for the money. Here's where people get stuck, though: go catless and you'll flow great but fight a check-engine light, fail inspection, and put up with the smell and drone every day. This Two Step Performance downpipe skips all of that. It's a catted pipe, so you get almost all the flow of a race pipe while your dash stays dark and your car stays legal. Thick-wall 304 stainless, drops right into the factory location, and runs a big 5-inch GESI G-Sport cat that flows like it isn't even there.

Catted Or Catless? Here's The Honest Answer

This is the real decision, so let's not dance around it. A catless downpipe is cheaper and flows a hair more, but on these cars it almost always throws a CEL, it reeks, it drones on the highway, and it's not street legal. Nine times out of ten, the person who buys one ends up chasing a defouler or a tune to make the light go away. This pipe saves you that whole mess. The GESI G-Sport cat is a high-flow 400 CPSI unit rated to 1,000 horsepower, and it's placed and sized so you keep your stock ECU mapping, no tune, no spacer, no fouler, no light. You still get the spool and the power that make a downpipe worth doing, you just get to keep driving the car every single day without it nagging you. On a car you actually daily, catted is the smarter call, and it's not close.

What Makes It Flow And What Makes It Last

The power isn't just the cat, it's the shape. Two Step uses a cast merge at the top that blends the turbine and wastegate flow into one smooth curve, and that's what drops your backpressure and lets the turbo come up faster. Everything downstream is CNC-trimmed and back-purge welded, which is a fancy way of saying the insides are smooth and the welds won't crack when the pipe's glowing hot after a few pulls. It's thick-wall 304 stainless the whole way, so it shrugs off the heat and won't rot out on you. This is hand-built stuff, and it feels like it when you're holding it.

Fits A Whole Range Of 2.0T Cars

Here's a nice part: one downpipe covers a lot of ground. It bolts to your OEM or most aftermarket front pipes with no adapters across the Honda and Acura 2.0T lineup.

It Won't Hold You Back When You Build

Don't let the "catted" part fool you into thinking this is only for a stock car. That cat is rated to 1,000 horsepower, so it isn't going to become the restriction as your build grows, and it's happy feeding a bigger turbo or running ethanol blends while keeping things streetable. Buy it now for your mostly-stock car and it'll still be the right pipe three mods from now. That's the opposite of the catless pipe you'll want to swap out the second you get serious.

Installing Your Downpipe

This is a solid weekend job, figure about an hour and a half if you're comfortable under the car. The good news is everything you need is in the box, so you're not making a second parts run halfway through. You get the downpipe with a welded O-ring boss, multi-layer stainless gaskets and all the hardware, an O2 sensor extension harness where your car needs one, and stainless heat-shield standoffs. No cutting, no tune, just bolt it up and torque it down.

Pick Your Finish

Run it in raw brushed stainless for a clean, no-nonsense look, or go silver Cerakote if you want the extra heat and corrosion protection and a more finished look under the car. Same pipe, same performance, just your call on looks and how much you care about keeping underhood temps down.

Why This Is The Downpipe To Run

This one's for the FK8, FL5, Integra Type S, or Accord 2.0T owner who wants the real gains a downpipe brings but refuses to trade away a clean dash, a legal car, and a no-drama daily to get them. You want the turbo to wake up, you want the flow, and you want to forget it's even there the rest of the time. A properly built catted pipe is how you get all of that at once, and this one's got the headroom to keep up no matter how deep you go. Bolt it on and let the turbo breathe.

Fits: 2017-2021 Honda Civic Type R (FK8), 2023+ Civic Type R (FL5), 2018+ Accord 2.0T, 2024+ Integra Type S (DE5), 2021+ TLX 2.0T, 2019+ RDX 2.0T. Type: catted downpipe, factory location. Cat: 5" GESI G-Sport, 400 CPSI, EPA-compliant, rated to 1,000 hp. Material: thick-wall 304 stainless, cast merge, CNC transitions, full back-purge welds. Tuning: no ECU tune required, CEL-free on stock mapping. Finish: raw brushed stainless or silver Cerakote. Includes: downpipe with welded O-ring boss, multi-layer stainless gaskets, hardware, O2 extension harness (where required), heat-shield standoffs. Install: bolt-on, no cutting, about 1.5 hours.