Toyota GR Supra (2020–2026) · Cat-back exhaust
Is a Cat-back exhaust Worth It on a Toyota GR Supra?
Short answer · Depends
A cat-back replaces the exhaust from after the catalytic converter(s) back to the tips. It changes sound and can slightly change flow; it does not remove cats. For the 2020–2026 Toyota GR Supra (A90/A91 (2020–2026) jointly developed with BMW; B58 power), Alone, power gains are usually small. Sound and weight are the main reasons people buy one. Pairing with a tune and other supporting mods is where numbers move more. Typical cost: Typical $500–$1,800. Difficulty: Moderate (jack stands, penetrating oil). A true cat-back keeps the catalytic converters, so emissions testing is usually unaffected—but loud systems can still break local noise rules. This page is general guidance—I am not claiming a personal install on every GR Supra kit listed in search results.
- Typical cost
- Typical $500–$1,800
- Difficulty
- Moderate (jack stands, penetrating oil)
- Time
- 2–4 hours
Worth it if…
- You understand this is primarily about sound/feel more than peak power on a stock tune
- You will verify fitment for your exact GR Supra before buying
- You are willing to install carefully or pay a shop
Skip it if…
- You expect guaranteed dyno numbers from a product page
- You will not confirm generation-specific fitment
- You are about to sell the car and want zero modification risk
Will it fit my car?
- Match the kit to your exact years and generation: A90/A91 (2020–2026) jointly developed with BMW; B58 power.
- MT arrived later—confirm year for intake and tune support.
- Keep receipts and stock parts if you may need to return to stock for inspection or sale.
- Search terms that usually work: "2020-2026 Toyota GR Supra cat-back exhaust".
What it does
A cat-back replaces the exhaust from after the catalytic converter(s) back to the tips. It changes sound and can slightly change flow; it does not remove cats.
Typical gains (cautious)
Alone, power gains are usually small. Sound and weight are the main reasons people buy one. Pairing with a tune and other supporting mods is where numbers move more.
Fitment notes for the Toyota GR Supra
A90/A91 (2020–2026) jointly developed with BMW; B58 power. MT arrived later—confirm year for intake and tune support. Always match chassis code / generation—tuner catalogs often list sibling cars that look similar but use different brackets, MAF housings, or hangers.
Install difficulty
Moderate (jack stands, penetrating oil). Plan about 2–4 hours. Penetrating oil and proper jack stands matter more than the catalog photos.
Emissions / legal caution
A true cat-back keeps the catalytic converters, so emissions testing is usually unaffected—but loud systems can still break local noise rules.
What to search for
Use: Toyota GR Supra 2020-2026 cat-back exhaust. Filter by your exact years, and prefer sellers with a clear return policy. Amazon and eBay links from this site are tagged searches or known affiliate programs—not invented product ASINs.
Buy / parts links
Affiliate links: I may earn a commission at no extra cost to you. Prices change; confirm fitment with the seller. Amazon links use tag 8324894-20; no invented ASINs.
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FAQ
Does a cat-back exhaust add horsepower to a Toyota GR Supra?
Usually little you can feel on a stock tune alone. Real gains tend to show up with a proper tune and supporting mods.
Is a cat-back exhaust hard to install on a GR Supra?
Moderate (jack stands, penetrating oil). Budget about 2–4 hours. If you are not set up for DIY work, get a quote from a shop that knows this chassis.
Will this void my warranty?
In the US a modification alone does not void an entire vehicle warranty, but a dealer can deny a claim for a failure they can show the mod caused. Keep stock parts.
Did you test this exact kit?
Not as a blanket claim for every GR Supra listing. This verdict is general, generation-aware guidance so you know what to verify before you buy.
Updated 2026-11-04. Costs are typical US ranges, not quotes. Check local laws and your warranty before modifying your car.