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Toyota GR Corolla Downpipe – High-Flow Catted & Catless

Toyota GR Corolla Downpipe – High-Flow Catted & Catless

Regular price $389.00 USD
Regular price Sale price $389.00 USD
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Catted/Catless
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Ships in 1–3 business days. Free standard shipping to the lower 48 states.

Toyota GR Corolla Downpipe – High-Flow Catted & Catless

Choose a high-flow catted or catless GGP downpipe for the 1.6L G16E-GTS-powered Toyota GR Corolla. Both configurations use stainless-steel construction, TIG welding, CNC-machined flanges and an integrated flex section.

Verified fitment: 2023–2026 GR Corolla with the 6-speed manual and 2025–2026 GR Corolla with the 8-speed DAT automatic. Choose your configuration, then review the fitment and tuning guidance below.

Catted vs. Catless

Option Best For What to Expect
High-Flow Catted Builds requiring a catted configuration, after fitment and use are confirmed Retains a 200-cell catalytic converter in the replacement assembly, confirmed by GGP. Application-specific road-use approval must be verified separately.
Catless Only applications and uses legally permitting a catless configuration No catalytic converter. Not recommended for road vehicles; a competition-use label is not a blanket legal exemption.

Key Features

  • Stainless-steel construction
  • TIG-welded design
  • CNC-machined flanges for proper fitment
  • Integrated flex section to help reduce stress and vibration
  • Available in 200-cell high-flow catted and catless configurations
  • Designed for the 1.6L G16E-GTS-powered GR Corolla

Vehicle Fitment

GGP-confirmed fitment for both catted and catless configurations
Model years Transmission Fitment
2023–2024 Toyota GR Corolla 6-speed manual Verified by GGP
2025–2026 Toyota GR Corolla 6-speed manual Verified by GGP
2025–2026 Toyota GR Corolla 8-speed DAT automatic Verified by GGP

For the 1.6L G16E-GTS-powered GR Corolla, not the regular Corolla 2.0L. For an aftermarket turbo, a non-standard exhaust connection or market-specific questions, send GGP your setup details before ordering.

Does the GGP GR Corolla downpipe require a tune?

A tune is recommended, but not required, for both the high-flow catted and catless GGP downpipe. This is GGP’s guidance for this product; other modifications may have their own calibration requirements.

GGP recommends Freektune. View Freektune’s Corolla / Yaris GR email-tuning service and confirm support for your model year, transmission, ECU and existing modifications directly with the tuner before purchasing a tuning package.

Will the downpipe cause a check-engine light?

A check-engine light may occur with either configuration, depending on the vehicle and calibration. “Tune recommended, not required” is not a CEL-free guarantee or a statement of road-use approval. Tuning does not by itself establish emissions compliance.

Email GGP with your model year, transmission and current exhaust setup for help before ordering.

Installation and Performance Expectations

Professional installation is recommended. Confirm required hardware, gaskets, clearances and the applicable road-use requirements. A catalytic converter or tuning change does not by itself establish legal compliance.

The downpipe sits directly after the turbocharger, making it an important part of the exhaust path on a turbocharged setup. Changing this section can affect exhaust restriction, response and sound, but no product-specific measured horsepower or response gain is stated here.

Shipping and Returns

Both the high-flow catted and catless GGP GR Corolla downpipes qualify for free standard shipping to the lower 48 U.S. states. Processing takes 1–3 business days (Monday–Friday, excluding holidays). This is the time before shipment, not the delivery time; carrier transit is additional. See our shipping policy for delivery estimates and other destinations.

To request a return, email orders@grocerygetterperformance.com within 14 days of receipt before sending the item back. Returnable items must be unused and in their original packaging. Customers arrange and pay for return shipping; GGP can provide a return label on request, with its cost deducted from the refund. Approved refunds go to the original payment method. Authorized returns go to Grocery Getter Performance, 109 Brook Meadow, Cibolo, TX 78108. Read the full return policy before installation.

Why Choose the GGP Downpipe?

This is a Grocery Getter Performance product for GR Corolla owners who want a straightforward choice between catted and catless configurations, solid construction, proper fitment and strong value. GGP supports the GR Corolla platform directly and can help customers choose the configuration that makes sense for their build.

Compare GR Corolla Downpipe Options

See how GGP’s catted and catless configurations compare with other complete assemblies on complete-assembly price, catalyst information and available performance evidence. Read the GR Corolla downpipe comparison guide before choosing a configuration.

View full details

Customer Reviews

Overall rating: 4.8 / 5 from 39 reviews.

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A must have upgrade for your GR Corolla. This unit eliminates the side to side play that the factory shift linkage has. Nice, tight shifting post install. Awesome upgrade 👌🏼

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Customer photo review of Racer X Fabrication GR Corolla Catch Can

Order was at my door swiftly and the install went smooth. I highly recommend OneSix Snail for all of your GR needs. Catch can looks great guys 🤙🏼

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Customer photo review of Ice Cap Rolla Tee

Awesome shirt, love to rep my car even when I’m not in it! I wear this everywhere! Very comfortable materials, the print on the shirt feels quality, I absolutely love how the colors pop.

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Customer photo review of Ghost Ride The Whip Tee

The background print is too dark. The outline of the trees cannot be seen. The tombstones are very dark and the names on them cannot be seen. Cannot see the wheels or grill.

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Customer photo review of Black Rolla Tee

Nice quality and fits good. Love the logo!

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Customer photo review of Ice Cap Rolla Tee

Love being able to pick my car color. Might go for the long sleeve in a few months.

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Customer photo review of OneSix Dad Hat

High quality, great fit and looks great next to my GRC!

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Customer photo review of Ice Cap Rolla Tee

Ordered an ice cap tee. No idea how a chose a small for my dad bod but my mistake was my daughter's gain. She immediately stole the shirt because we work on the car together. The Grey color is perfect for the colors in the design and makes the red pop. The design is sick and the quality shirt is really really nice. So much so I ordered the right size immediately! Buy one!

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Customer photo review of OneSix Dad Hat

This hat…what can I say? Do you want to be the talk of the GR community? Do you want to have people look at you and know you mean business? Do you want keep the sun out of your eyes (wearing it forward of course)? Do you want to be successful? If you answered yes to any of these, then this is the hat for you! The fit and feel of this hat is perfect, much like the Brin Naub® and synthetic leather-trimmed sport seats in the GR. The embroidery seems as though it was done by the hands of angels, every stitch to perfection. When I first put this hat on, I lost 15lbs and gained another 15lbs in muscle (can’t confirm it scientifically, but the scale stayed the same and I felt stronger). My senses while having this hat on were also heightened. The 6 speed manual transmission in my GR Corolla didn’t stand a chance as I flew through the gears masterfully while passing the Ferrari SF90 stradale awd that couldn’t keep up with me (it may have been slowing down to turn, but pretty positive they saw me and knew they couldn’t keep up). Bottom line is, you want this hat, you NEED this hat. I’d recommend buying atleast two of them for when people notice you’ve become too powerful and try to steal your hat. Always have a backup! And remember, with a great hat comes great responsibility, or something like that. Buy this hat now!

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Customer photo review of Gunmeta ガンメタ| Gun Metal Tee

Love the design of the shirt!! I ordered two of them and they were delivered quickly after. My family loves this shirt as I have a HM GRC. Next time, when I order again, I’d consider getting one size larger.

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Customer photo review of Hyouyuki ヒョウユキ | Drifting Snow Tee

Graphics are sick, they’re printed well (screenprinting feels thick, like it won’t crack, fade or peel so that’s good) printing seems accurate (back is perfectly centered), blank material is always s tier w comfort colors so that’s good. 10/10 will buy again

Hyouyuki ヒョウユキ | Drifting Snow Tee

Going to make this short and sweet, was going to order my MBRP exhaust through a different company but before that I had onesix In the back of my head. The experience I had was top tier. They answered every single question and kept me in the loop with shipping. I would definitely recommend buying from these guys! They're in it to make sure the customers that buy from them are more then satisfied...but well taken care of.

MBRP T304 SS 3in Cat-Back Dual Center Rear w/ Carbon Fiber Tips Toyota Corolla GR 1.6L 2023+

Really love these shirts bought 2 and a hat im loving them so much.

Black Rolla Tee

Nice design and graphic quality. XXL shirt runs pretty big. I should have sized down one.

Heavy Metal Rolla Tee

High quality shirt and printed graphics! Got the pink crop for my wife and she loves it

Off White Rolla Crop Top

I love my t shirt. The material and the prints are perfect.

Supersonic Red Rolla Tee

Great soft shirt awesome design I would love to get a one six snail sticker to put on the car as a sort of sponsor/advertisement :)

Black Rolla Tee