AMS Performance GR Supra B58 Street Downpipe w/GESI Catalytic Converter
amsAMS.38.05.0001-2
- FREE DOMESTIC SHIPPING ON ORDERS OVER $199
Overview
Upgrade your exhaust system with the AMS Performance Street Downpipe, engineered specifically for the Toyota GR Supra A90/A91. Designed to improve exhaust flow while maintaining street usability, this high-quality downpipe enhances turbo performance, sound, and overall driving response.
Key Features
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High-Flow GESI Catalytic Converter
Includes an EPA-verified Ultra High Flow GESI catalytic converter rated to support 800+ horsepower. -
4.5” Mandrel-Bent Piping
Large-diameter, smooth-bent tubing reduces restriction and maintains optimal exhaust velocity. -
304 Stainless Steel Construction
Heavy-gauge stainless steel provides durability, corrosion resistance, and long-term reliability. -
Precision CAD Engineering
Designed for OEM-level fitment with factory mounting points and flanges. -
Factory O₂ Sensor Retention
Integrated sensor bungs allow reuse of factory oxygen sensors without adapters. -
Stock & Aftermarket Exhaust Compatibility
3.15” (80mm) outlet mates with factory or compatible cat-back systems.
Performance Benefits
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Improved Turbo Spool
Reduced back pressure helps the turbocharger spool faster for quicker boost response. -
Increased Power Potential
Enhanced exhaust flow supports horsepower gains when paired with proper tuning. -
More Aggressive Exhaust Tone
Produces a deeper, sportier sound under acceleration while remaining street-friendly. -
Emissions-Conscious Performance
High-flow catalytic converter balances performance and compliance in many U.S. states (check local regulations). -
Direct Bolt-On Installation
No cutting required for installs — engineered as a direct replacement for the factory downpipe.
** Not CARB Legal**