AMS Performance Alpha 6 GTX3076 Gen II Turbo Kit – 2020+ Toyota GR Supra A90

The AMS Performance Alpha 6 GTX3076 Gen II Turbo Kit for the 2020+ Toyota GR Supra A90 is engineered for enthusiasts who want serious, repeatable power with uncompromising reliability. Built around Garrett’s proven GTX3076R Gen II technology and perfected through AMS’s extensive motorsport development, the Alpha 6 system delivers a massive performance increase while maintaining responsive, streetable spool characteristics.

Rather than simply adapting a universal turbocharger to the B58 platform, AMS developed the Alpha 6 kit as a fully integrated system. Everything has been designed, validated, and torture-tested to operate cohesively—from the robust cast stainless exhaust manifold to the high-flow downpipe, oversized inlet plumbing, heat shielding, coolant/oil lines, and supporting hardware. The result is a complete, OEM-quality solution engineered to withstand elevated boost, extreme temperatures, and track-level demands.

The centerpiece of the kit, the Garrett GTX3076 Gen II, features a fully machined billet compressor wheel, optimized aerodynamics, and a ball-bearing center housing that offers both increased durability and lightning-fast transient response. Compared to the factory turbo, the Alpha 6 provides significantly more airflow across the entire rev range, enabling the B58 to produce power levels well beyond what the stock turbocharger can support—all while retaining smooth, predictable boost delivery.

AMS engineers focused heavily on reliability under sustained high load. The cast stainless manifold was CFD-modeled and flow-balanced to ensure even pressure distribution and consistent exhaust pulse energy. This improves spool behavior and reduces thermal stress, allowing the system to maintain performance during repeated high-temperature cycles. High-quality AN oil/coolant lines and reinforced brackets ensure long-term durability far beyond typical aftermarket offerings.

With appropriate fueling and tuning, the Alpha 6 Turbo Kit delivers a dramatic increase in horsepower and torque, transforming the Supra into a far more capable machine whether driven on the street or track. Yet the drivability remains refined, with excellent midrange response and top-end power that keeps pulling long after the stock turbo falls flat.

This is not a piecemeal turbo swap—it’s a complete, cohesive, premium turbo system built to AMS motorsport standards.

Key Features

• Direct, complete turbo upgrade for 2020+ Toyota GR Supra A90 (B58)

• Garrett GTX3076R Gen II dual ball-bearing turbocharger

• Massive airflow increase and exceptional spool characteristics

• Engineered for high-boost and high-horsepower applications

• CFD-optimized cast stainless steel turbo manifold

• High-flow downpipe, oversized compressor inlet, and charge plumbing

• Premium AN-line oil and coolant routing for reliability

• Precision-machined fittings and brackets for OEM-grade fitment

• Fully bolt-on with no fabrication required

• Supports large power gains with proper fueling and tuning

• Built, tested, and validated to AMS motorsport standards

Ideal For

• Supra owners seeking 600–800+ whp capability (fueling/tuning dependent)

• Street builds that want fast spool with huge top-end headroom

• Track and half-mile cars needing consistent performance under heat

• Tuned E85 setups pushing the limits of the stock turbo

• Builders who want a complete, cohesive turbo solution—not a universal kit

Installation

Bolt-on installation using included hardware. Professional installation and tuning required. Compatible with factory-style or aftermarket charge-air cooling systems.