AMS Performance Street Downpipe w/ Ultra High Flow GESI Catalytic Converter - 2020-2024 Toyota Supra
AMS Performance Street Downpipe w/ Ultra High Flow GESI Catalytic Converter - 2020-2024 Toyota Supra
AMS
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PRODUCT DETAILS ▾
RallySport Direct proudly carries a great selection of performance upgrades brought to you by the record holders at AMS Performance.
This is the AMD Performance Toyota GR Supra Street Downpipe with a built-in Gesi Catalytic Converter. This is a 4.5" full mandrel-bent example that is one of the most durable, and best-performing examples that is currently available on the market. The long gradual transitions in the mandrel bent pipe allow the exhaust gases to maintain velocity without a buildup of back pressure inside of the system. AMS was able to design a superior product due to the latest in engineering, research, and development to provide you with a quality product.
HIGHLIGHTS:
- 304 stainless steel construction
- 4.5" design reduces to a 3.5" flex section which will maximize volume and flow
- Significantly lowered back pressure means the potential for more power
- The exhaust gases can easily flow across the turbine wheel
- 49-state legal built-in GESI catalytic converter rated to over 800 horsepower
- Newly formulated substrate for new vehicle emissions requirements
- Delivers a throaty exhaust note under wide open throttle
- CAD engineered for maximum exhaust flow with unrivaled fit and finish
- The turbine flange offers a smooth transition from the turbine outlet
- The 3.15" (80mm) outlet allows you to run either stock or aftermarket catback systems
- Complete bolt-on means no cutting and will bolt to the factory location
- 02 sensors in OEM locations with no jumpers needed
- Mandrel bent tubing fir the best flow
WHY WE CARRY THIS ▾
We only list parts we’d run ourselves or recommend to a friend building a real car. If it feels vague, unverified, or inconsistent, it doesn’t make the cut.
- Fitment-first mindset — no “universal” roulette
- Brand reputation matters — we favor proven manufacturing
- Support that actually responds with real answers
WHAT TO EXPECT ▾
This is the clean path: correct fitment, clean install, and results that match the intent.
- Install-ready experience with correct mounting where provided
- Finish that holds up to real driving, not just photos
- Selections on this page drive the exact fitment shipped
TRUST, BUILT INTO THE PROCESS.
Anyone can list parts. We curate what belongs on a serious build. Our goal is simple: fewer surprises, cleaner installs, and confidence when you hit “Buy.”
Fitment checked
We prioritize vehicle-specific listings and clear selection logic so you’re not gambling on compatibility.
Brand discipline
Proven manufacturing and consistent quality matter more than hype. We bias toward what actually holds up.
Real support
If you have a question, you’ll get a human answer that helps you finish the build — not a copy-paste shrug.
RallySport Direct proudly carries a great selection of performance upgrades brought to you by the record holders at AMS Performance.
This is the AMD Performance Toyota GR Supra Street Downpipe with a built-in Gesi Catalytic Converter. This is a 4.5" full mandrel-bent example that is one of the most durable, and best-performing examples that is currently available on the market. The long gradual transitions in the mandrel bent pipe allow the exhaust gases to maintain velocity without a buildup of back pressure inside of the system. AMS was able to design a superior product due to the latest in engineering, research, and development to provide you with a quality product.
HIGHLIGHTS:
- 304 stainless steel construction
- 4.5" design reduces to a 3.5" flex section which will maximize volume and flow
- Significantly lowered back pressure means the potential for more power
- The exhaust gases can easily flow across the turbine wheel
- 49-state legal built-in GESI catalytic converter rated to over 800 horsepower
- Newly formulated substrate for new vehicle emissions requirements
- Delivers a throaty exhaust note under wide open throttle
- CAD engineered for maximum exhaust flow with unrivaled fit and finish
- The turbine flange offers a smooth transition from the turbine outlet
- The 3.15" (80mm) outlet allows you to run either stock or aftermarket catback systems
- Complete bolt-on means no cutting and will bolt to the factory location
- 02 sensors in OEM locations with no jumpers needed
- Mandrel bent tubing fir the best flow
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