Toyota GR Corolla Downpipe – High-Flow Catted & Catless
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Description
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
| 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.
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