Once items enter into production, the estimated time of delivery and completion including delviery could take up to 36 business days. Most products will be specified on their page - however any significant lead time of greater than 14 days, sequential racing will reach out on lead and estimated times.
Orders can be changed or cancelled within 24 hours. Any orders cancelled after 24 hours period from the time and date of purchase will incur a cancellation fee of 30% of the total price paid. Most of Sequential Racing products are aftermarket and are specifically made to individual.
Orders that are made custom or special order may not be eligible for a full refund.
Once your order has been processed. You will receive a tracking number via email and SMS. You can use this number to track your order on our website or courier’s site.
Answer to help your customers feel more comfortable completing their purchase.
Answer to help your customers feel more comfortable completing their purchase.
DESCRIPTION
AMS Performance Street Downpipe w/ GESI Catalytic Converter for Toyota GR Supra A90/A91 – High Flow Performance Exhaust Upgrade
Unlock maximum performance, improved turbo spool, and increased power with the AMS Performance Street Downpipe for the Toyota GR Supra A90/A91 (MK5). Featuring a 4.5” mandrel-bent stainless steel design, this high-flow downpipe significantly reduces back pressure, allowing exhaust gases to flow smoothly for faster turbo spool and increased horsepower.
Equipped with a 49-state legal GESI catalytic converter rated for 800+ HP, this downpipe enhances exhaust flow while maintaining emissions compliance. Designed with CAD-engineered precision, it provides a throaty exhaust note under acceleration while offering seamless fitment to both stock and aftermarket exhaust systems.
This bolt-on upgrade is an essential mod for Supra enthusiasts looking to enhance power, efficiency, and exhaust sound without sacrificing drivability.
Key Features & Benefits:
Feature
Benefit
Maximized Turbo Spool & Power Gains
Lower back pressure enables exhaust gases to flow freely, reducing turbo lag and increasing peak performance.
49-State Legal High-Flow GESI Catalytic Converter
Rated for 800+ HP, ensuring compliance with emissions regulations while improving performance.
Premium 304 Stainless Steel Construction
4.5” mandrel-bent tubing with a smooth turbine flange transition for maximized volume & flow.
Stock & Aftermarket Exhaust Compatibility
Features a 3.15” (80mm) outlet, allowing fitment with OEM or aftermarket cat-back exhaust systems.
OEM Fitment with No Modifications Required
Bolt-on installation with OEM O2 sensor locations—no jumpers or additional wiring needed.
Enhanced Exhaust Sound
Produces a deep, aggressive exhaust note under acceleration while maintaining smooth, refined operation.
Durable & Heat-Resistant Design
Optimized for long-lasting durability with a flex section that enhances resistance to thermal expansion.
Designed for RHD & LHD GR Supra Models
Engineered for perfect fitment on both right-hand drive and left-hand drive GR Supra A90/A91 models.
Vehicle Fitment:
✔ Toyota GR Supra A90/A91 (MK5) – B58 3.0L Turbo Engine ✔ Model Years: 2020, 2021, 2022, 2023, 2024 ✔ Compatible with stock & aftermarket cat-back exhaust systems
⚠️ International Shipping – This product ships from our global distribution facility. ⚠️ Professional Installation Recommended – While designed for OEM bolt-on fitment, installation by an experienced technician is advised. ⚠️ Not Legal for Sale or Use in California – Please check local emissions regulations before installation.
Why Choose Sequential Racing’s AMS Performance Street Downpipe?
At Sequential Racing Australia, we bring you premium performance upgrades for the Toyota GR Supra A90/A91, ensuring you unlock the full potential of your B58 engine. The AMS Performance Street Downpipe is engineered for maximum flow, emissions compliance, and an aggressive exhaust note.
🔴 Upgrade your GR Supra’s exhaust system today! Order now from Sequential Racing!
AMS Performance Street Downpipe w/ GESI Catalytic Converter for Toyota GR Supra A90/A91 – High Flow Performance Exhaust Upgrade
Unlock maximum performance, improved turbo spool, and increased power with the AMS Performance Street Downpipe for the Toyota GR Supra A90/A91 (MK5). Featuring a 4.5” mandrel-bent stainless steel design, this high-flow downpipe significantly reduces back pressure, allowing exhaust gases to flow smoothly for faster turbo spool and increased horsepower.
Equipped with a 49-state legal GESI catalytic converter rated for 800+ HP, this downpipe enhances exhaust flow while maintaining emissions compliance. Designed with CAD-engineered precision, it provides a throaty exhaust note under acceleration while offering seamless fitment to both stock and aftermarket exhaust systems.
This bolt-on upgrade is an essential mod for Supra enthusiasts looking to enhance power, efficiency, and exhaust sound without sacrificing drivability.
Key Features & Benefits:
Feature
Benefit
Maximized Turbo Spool & Power Gains
Lower back pressure enables exhaust gases to flow freely, reducing turbo lag and increasing peak performance.
49-State Legal High-Flow GESI Catalytic Converter
Rated for 800+ HP, ensuring compliance with emissions regulations while improving performance.
Premium 304 Stainless Steel Construction
4.5” mandrel-bent tubing with a smooth turbine flange transition for maximized volume & flow.
Stock & Aftermarket Exhaust Compatibility
Features a 3.15” (80mm) outlet, allowing fitment with OEM or aftermarket cat-back exhaust systems.
OEM Fitment with No Modifications Required
Bolt-on installation with OEM O2 sensor locations—no jumpers or additional wiring needed.
Enhanced Exhaust Sound
Produces a deep, aggressive exhaust note under acceleration while maintaining smooth, refined operation.
Durable & Heat-Resistant Design
Optimized for long-lasting durability with a flex section that enhances resistance to thermal expansion.
Designed for RHD & LHD GR Supra Models
Engineered for perfect fitment on both right-hand drive and left-hand drive GR Supra A90/A91 models.
Vehicle Fitment:
✔ Toyota GR Supra A90/A91 (MK5) – B58 3.0L Turbo Engine ✔ Model Years: 2020, 2021, 2022, 2023, 2024 ✔ Compatible with stock & aftermarket cat-back exhaust systems
⚠️ International Shipping – This product ships from our global distribution facility. ⚠️ Professional Installation Recommended – While designed for OEM bolt-on fitment, installation by an experienced technician is advised. ⚠️ Not Legal for Sale or Use in California – Please check local emissions regulations before installation.
Why Choose Sequential Racing’s AMS Performance Street Downpipe?
At Sequential Racing Australia, we bring you premium performance upgrades for the Toyota GR Supra A90/A91, ensuring you unlock the full potential of your B58 engine. The AMS Performance Street Downpipe is engineered for maximum flow, emissions compliance, and an aggressive exhaust note.
🔴 Upgrade your GR Supra’s exhaust system today! Order now from Sequential Racing!
INSTALLATION AND CARE
Mechanical Knowledge: Basic mechanical skills are recommended for installation.
Professional Installation: For a guaranteed precision fit and optimal performance, we recommend professional installation.
Vehicle Modifications: As with all engineered aftermarket parts, slight adjustments such as cutting, sanding, or altering may be necessary. This is due to variations in vehicle manufacturing and wear over time.
Need Help? If you have any questions or need assistance, feel free to contact the Sequential Racing Team—we're here to help!
Mechanical Knowledge: Basic mechanical skills are recommended for installation.
Professional Installation: For a guaranteed precision fit and optimal performance, we recommend professional installation.
Vehicle Modifications: As with all engineered aftermarket parts, slight adjustments such as cutting, sanding, or altering may be necessary. This is due to variations in vehicle manufacturing and wear over time.
Need Help? If you have any questions or need assistance, feel free to contact the Sequential Racing Team—we're here to help!
PROCESS AND DELIVERY TIMES
Payment Processing: Please allow 1 to 2 business days for payment processing.
Custom Orders: Some products may require customization and are made to order. In such cases, production and delivery may take up to 4 weeks. This information will be clearly stated on the product page.
Order Updates: Our dedicated team will provide guidance and regular updates once your purchase is confirmed.
Payment Processing: Please allow 1 to 2 business days for payment processing.
Custom Orders: Some products may require customization and are made to order. In such cases, production and delivery may take up to 4 weeks. This information will be clearly stated on the product page.
Order Updates: Our dedicated team will provide guidance and regular updates once your purchase is confirmed.
DISCLAIMER AND IMPORTANT NOTES
Aftermarket Parts: Most products, including carbon components, are aftermarket parts designed for vehicle modifications. While they are made to fit specific vehicles, slight variations may occur due to manufacturing differences.
Fitment Verification: Upon receiving your item, please verify that you have received the correct part. We strongly recommend performing a test fit before painting or undertaking any permanent installation.
Returns & Warranty: Returns or warranty claims will not be accepted if the product has been tampered with, installed, or is not in its original, new condition.
Aftermarket Parts: Most products, including carbon components, are aftermarket parts designed for vehicle modifications. While they are made to fit specific vehicles, slight variations may occur due to manufacturing differences.
Fitment Verification: Upon receiving your item, please verify that you have received the correct part. We strongly recommend performing a test fit before painting or undertaking any permanent installation.
Returns & Warranty: Returns or warranty claims will not be accepted if the product has been tampered with, installed, or is not in its original, new condition.