HKS Super Turbo Muffler (Cat-Back)

2019–2024 Toyota GR Supra B58

31029-AT003

Overview:

The HKS Super Turbo Cat-Back exhaust system is engineered specifically for the Toyota GR Supra equipped with the B58 engine from 2019 through 2024. Designed for enthusiasts who have upgraded to a high flow downpipe, this exhaust expertly balances performance gains with refined sound control. It delivers a moderately sporty exhaust note while minimizing unwanted drone, making it ideal for daily driving and spirited runs alike.

Utilizing advanced HKS technology, this cat-back exhaust suppresses excessive volume without sacrificing the aggressive tone that performance drivers seek. Its compatibility with the factory exhaust valve allows seamless switching between Sports and Normal modes, providing versatility to suit various driving conditions and preferences.

Key Features:

The HKS Super Turbo Muffler incorporates several innovative features that enhance both performance and driving experience:

• Inspection-ready and compliant with noise regulations for street use
• Compatible with the OEM exhaust valve system, allowing mode switching between Sports and Normal
• Full straight exhaust layout eliminates restrictive narrow points, improving exhaust gas flow
• Fully adjustable slitted inner side design enhances sound silencing without compromising flow
• Titanium gradation finish on tail tips for a premium appearance
• Balanced size tail tips designed for precise bumper cut-outs
• Constructed from durable S304 stainless steel piping (85mm-70mm diameter)
• Maintains a floor clearance of 111mm on stock GR Supra models
• Lightweight design weighing approximately 24.7 kg (54 lbs)

Construction & Design:

The HKS Super Turbo Muffler is crafted from high-quality S304 stainless steel, ensuring excellent corrosion resistance and long-lasting durability under demanding conditions. The exhaust features a full straight-through layout that removes restrictive bottlenecks, optimizing exhaust gas flow for improved throttle response and efficiency.

Its inner construction includes a slitted design that effectively reduces unwanted drone and harshness, delivering a refined yet sporty exhaust tone. The titanium gradation tail tips not only provide a striking visual accent but also resist discoloration from heat, maintaining their appearance over time.

Performance & Sound

This cat-back exhaust is engineered to complement high flow downpipes, making it an excellent choice for enthusiasts seeking to tame excessive exhaust volume while retaining a dynamic sound profile. The system produces a moderately sporty exhaust note that enhances the driving experience without becoming intrusive during everyday use.

With noise levels measured at 87 dB when closed, the HKS Super Turbo Muffler strikes a balance between aggressive sound and regulatory compliance. The elimination of drone ensures comfort on longer drives, while the factory valve compatibility allows drivers to tailor the exhaust sound to their mood or driving environment.

Installation & Fitment:

The HKS Super Turbo Muffler is designed as a direct bolt-on replacement for the factory cat-back exhaust on Toyota GR Supra B58 models from 2019 to 2024. It fits models without the OPF (Otto Particulate Filter) type and utilizes the stock actuator and valve control, ensuring seamless integration with the vehicle’s existing exhaust valve system.

Installation requires no major modifications, making it suitable for enthusiasts looking for a straightforward upgrade that enhances both performance and sound quality.

What's Included:

• HKS Super Turbo Cat-Back Muffler assembly
• Balanced titanium gradation tail tips (110mm diameter)
• Mounting hardware and gaskets for direct fitment
• Installation instructions

Ideal For:

This exhaust system is ideal for Toyota GR Supra owners who have upgraded their downpipe to a high flow variant and want to reduce excessive exhaust noise without sacrificing performance. It suits drivers seeking a refined yet sporty sound, improved exhaust flow, and compatibility with the factory exhaust valve system for versatile sound control.