AMS Performance Alpha 8 GTX3582 GEN II Turbo Kit Toyota GR Supra A90 2020 | AMS.38.14.0003-2

Adding more horsepower to the new Toyota GR Supra has never been easier, with the new AMS Performance A90 2020 Toyota GR Supra ALPHA 8 GTX3582 GEN II Street Turbo Kit. Our team has engineered and built the 2020 GR Supra platform’s first publicly available internally gated full turbo kit that utilizes the OEM electronic wastegate. This unique advancement allows for a seamless integration of the OEM ECU for boost control the way it was intended from the factory. The GR Supra’s electronic wastegate system particularly excels at boost response over mechanical alternatives, making it the ultimate choice for part throttle drivability or on-off throttle situations as seen on a road course.

• Utilizing GTX3582 Gen II Garrett© Turbocharger w/ 66mm Inducer
• Incorporates the Factory Electronic Wastegate for OEM-Like Boost Control
• GESI G-SPORT EPA Compliant Catalytic Converter
• Efficient Exhaust Manifold for Optimal Flow and Spool
• Coolant and Oil Line Sheaths for Superior Heat Management
• TiAL Internal Wastegate Exhaust Housing with 3.5″ V-Band Discharge
• Massive Powder Coated 4″ Aluminum Intake Piping
• Includes CNC Billet Aluminum Oil And Water Port AN Adapter Fittings for Leak-Free Install
• Installed Oil and Water Lines and Clocked Compressor Cover to Save You Install Time
• Cleanable and Reusable Dry Media Air Filters
• Includes all Ancillary Components, Including all Hardware, Lines, and Couplers

ENGINEERED TO WIN

Our AMS SnailWorks© Engineering Team has spent hundreds of R&D hours refining the AMS Performance A90 2020 Toyota GR Supra ALPHA 8 GTX3582 GEN II Turbo Kit to be the best performing, highest quality, and easiest to install kit on the market. The MKV turbo kit is designed with minimal bends and restrictions by our team to smoothly and efficiently feed more air through the intake and exhaust path and into the B58 engine. Then, focusing on the small details, our team designed the CNC machined adapters to allow the AN coolant and oil lines to install directly to the B58 engine for a leak-free install. We also designed and created our own CNC machined actuator rod adapter to allow us to mount the factory electronic wastegate to the new turbo.

The AMS SnailWorks© Engineering Team has designed the ALPHA 8 Turbo Kit to be a direct bolt-in install without hacking up your prized possession. The ALPHA 8 is fully compatible with A/C, Power Steering, and all other factory options, and is easily reversible back to stock with a few inexpensive replacement parts. The design of the new Toyota Supra ALPHA 8 Turbo Kit positions it to be the best performing, highest quality, and easiest to install kit on the market. The best part about the AMS ALPHA 8 Turbo Kit is that it is fully compatible with the high quality AMS 3″ Charge Pipe you already have installed so there is no need to buy a charge pipe twice like with the competition.

HAND FABRICATED TUBULAR EXHAUST MANIFOLD AND 3.5″ DOWNPIPE

The new AMS Performance A90 2020 Toyota GR Supra ALPHA 8 GTX3582 GEN II Turbo Kit features 1.5″ ID 304L stainless steel schedule 10 piping hand fabricated to create the ultimate in exhaust flow. Incorporated into the manifold and turbine housing is a v-band connection for an easier install and leak-free operation. Additionally, because we have developed this kit as an internally gated system, there is no additional weight and flow disturbance you would find with an external wastegate design.

Our AMS SnailWorks© Engineering Team designed a downpipe that tapers from 3.5″ down to the factory exhaust joint which helps eliminate excessive back pressure. This tig welded 3.5″ stainless steel downpipe features a v-band connection, a 3.5″ flex section with smoothed internal liner, a GESI G-SPORT EPA compliant catalytic converter, and a factory style 80mm slip joint. This allows for a perfect bolt-in solution to your existing exhaust system, and the flex joint allows for natural engine movement to help prevent broken welds or exhaust hangers.

THE GARRETT© GTX-SERIES TURBO

The Garrett© GTX-Series turbos are a tried and true performance turbocharger lineup from Garrett©, with excellent horsepower output and great spool time. The new GTX3582R ALPHA 8 turbo kit is over 700 whp* capable while still having excellent boost response and that world renowned Garrett© reliability! GTX GEN II compressor wheels were designed using proprietary Garrett Motion computer simulation technology focusing on CFD analysis to optimize the wheel design to reach maximum efficiency and mass flow for each turbocharger. Each GTX GEN II turbocharger can create more air mass flow, offering enthusiasts a wider range of power output when tuning the vehicle. The 8mm dual ceramic ball bearing cartridge provides optimal turbo response and reliability through its reduction in shaft motion.

To further improve power output, these Garrett© GTX3582 Gen II turbos use a 4″ inlet and 2.5″ discharge compressor cover. This cover allows for greater airflow compared to a 3 inch cover found on many smaller turbo systems. By implementing race-proven Garrett© turbos we have successfully delivered you more horsepower throughout the entire powerband! Our team has even gone the extra mile and pre-installed the oil and water lines to the CHRA as well as clocked the compressor cover to save you installation time and effort.

KIT INCLUDES

At JDMuscle, we understand that fast and reliable shipping is crucial. With multiple distribution centers across the nation, most in-stock items are shipped within 1-2 business days. On average, you can expect delivery within 1-5 business days for in-stock items. Please note, however, that some products may ship directly from vendors, which could result in additional delays. Products sourced from overseas may also take longer to arrive.

Free Shipping over $199 Policy

• Free shipping is available only for the 48 contiguous states in the U.S.
• Ground shipping applies to regular-sized items only.
• Oversized items such as lips, hoods, and trunks requiring freight shipping are not included in the free shipping program.
• Some manufacturers may impose a shipping surcharge, which will be excluded from the free shipping program.
• The most accurate shipping costs will be displayed at checkout. If you believe the shipping cost is incorrect, please contact us at sales@jdmuscleusa.com for further review.

Carriers

We ship via FedEx, UPS, USPS, and DHL. While we strive to use the most efficient option, we cannot guarantee which carrier will deliver your order. Your items may arrive in multiple packages through different carriers.

Processing Time and Shipping Cut-off

Orders typically take 24 hours to process, with shipping cut-off at 3:00 PM EST. Transit times vary based on location and carrier. Some items, especially those requiring freight shipping, may have extended processing and delivery times. For freight shipping inquiries, contact us at sales@jdmuscleusa.com.

International and Special Shipping Considerations

• International orders are subject to higher shipping fees. If you would like to review your shipping cost, email us at sales@jdmuscleusa.com with your full address and items you plan to purchase.
• In some cases, shipping costs may be incorrectly calculated for international or oversized items. We reserve the right to adjust the shipping fee and will work with you to negotiate a fair cost if needed.
• Customers can challenge and request a review of international shipping fees, and we’ll do our best to find a lower rate where possible.
• Customs Fees & Import Taxes: The shipping charge you pay does not include customs fees or import taxes. These charges vary by country and are the customer’s responsibility. Please check with your local customs office for more details before placing an order.
• Shipping Cost Adjustments: Shipping rates fluctuate, and while we strive to provide the most competitive rates, there may be instances where the shipping cost you paid is significantly lower than the actual cost. In such cases, we reserve the right to request the difference to ensure we cover our basic expenses. We appreciate your understanding and will always aim to keep shipping costs as affordable as possible.

Address Modifications and Fees

• Any modifications to a shipping address after an order is placed may be subject to additional fees.
• For single, small packages, the flat fee is $20. For larger or multiple packages, the fee may be up to $60 or more.

Freight Shipping Guidelines

• Freight shipments require you to be present at the time of delivery.
• The delivery driver may provide a delivery receipt (Bill of Lading). It is crucial to inspect the shipment before signing.
• Carefully check the packaging for any visible damage (dents, punctures, rips) and notate it on the Bill of Lading.
• Open the package and inspect the product itself. If damage is found, document it in detail on the Bill of Lading, take photos, and contact the shipping company to initiate a damage claim.
• Do not refuse the shipment. Contact us at sales@jdmuscleusa.com for guidance.
• If the delivery driver is unable to wait for inspection, note this on the Bill of Lading.

Failure to document damages before signing the Bill of Lading will void any claims for refunds or replacements.

Pre-Installation Inspection Policy

We strongly recommend inspecting all parts or items upon arrival before installation. If you identify any damage, imperfections or missing components, report them immediately to sales@jdmuscleusa.com. Do not install the item. Please note that reports of damage, defects, imperfections or missing components after installation will NOT be honored.

Package Protection

We do our best to ensure your items arrive to you safely but sometimes things happen. If you utilized our Checkout+ feature, rest assured that your package is protected! With package protection, in the event that your package is lost, stolen, or damaged while in transit, we will replace it free of charge. To start a shipping claim, please click here.

Need Assistance?

If you have any concerns about shipping costs or transit times, or if you notice discrepancies during checkout, feel free to reach out to us at sales@jdmuscleusa.com. We’re happy to assist you and ensure a smooth delivery experience.

Our policy lasts 30 days. If 30 days have passed since your purchase, unfortunately, we can’t offer you a refund or exchange. To initiate a return, please email us at sales@jdmuscleusa.com.

Eligibility for Returns

✅ Items must be unused and in the same condition as when received.
✅ Items must be in their original packaging.

Non-Returnable Items

❌ Gift cards
❌ Special-order or custom products

How to Initiate a Return

📧 Include the following details in your return request email:

Order Number

Item(s) to be returned

Reason for return

Important Notes:

Do NOT send your purchase back to the manufacturer.

Do NOT return any items without first setting up a return request with us.

Partial Refunds

Partial refunds may be granted under the following conditions:

⚠️ Items not in original condition, damaged, or missing parts not due to our error.
⚠️ Items returned more than 30 days after delivery.

Restocking Fees

Some manufacturers may charge a restocking fee, which includes but not limited to:

ManufacturerRestocking Fee

ESR30%

JDMuscle15%

PLM & Option Lab 20%

Cancellations

Before placing an order, please confirm availability.

Cancellations within 7 days may be subject to fees to cover third-party transaction costs.

Once the order has been processed (packaged or tracking generated), cancellations are not allowed. Eligible items may be returned instead.

Special-order items cannot be canceled.

Refund Process

🔄 Once your return is received and inspected, we will notify you of the refund status.
💳 Approved refunds will be credited back to your original payment method within 3-10 business days (depending on the payment provider).

Late or Missing Refunds

🔍 Check your bank statement — sometimes the refund may not appear as a new entry but as the disappearance of the pending charge. 📞 Contact your credit card or financing company — they may require additional time for processing.

If you’ve done all of the above and still haven’t received your refund, email us at sales@jdmuscleusa.com for assistance.

Sale Items

Only full-priced items are eligible for returns and refunds.

Exchanges

We replace items only if they are defective or damaged. To request an exchange for the same item, email us at sales@jdmuscleusa.com.

Gifts

🎁 If the item was marked as a gift when purchased and shipped directly to you, you will receive a gift credit for the return value.
📩 If the gift giver had the item shipped to themselves, we will refund the gift giver.

Return Shipping

📦 Customers are responsible for return shipping costs unless the item is damaged, defective, or incorrect (in which case we will cover shipping both ways).

Initial shipping costs are non-refundable.

Return shipping costs will be deducted from the refund amount.

For items over $75, consider using a trackable shipping service or purchasing shipping insurance. We are not responsible for lost or damaged items during return shipping.

Return Shipping Address: Please use the address provided in the RMA/return instructions, as it may differ from the initial shipping address.

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