HKS Dual Muffler Catback Exhaust System – Toyota Supra B58 3.0 (2019+) (Without OPF)

Item Code: 31014-KT001 | Premium stainless steel catback with dual rear mufflers and a sporty, deep sound

The HKS Dual Muffler Catback Exhaust System is specially developed for the Toyota GR Supra MK5 (A90/A91) B58 3.0 (2019+, without OPF) . This high-quality exhaust system combines iconic HKS quality with a perfect balance of performance, sporty sound, and everyday comfort .

With its twin tailpipes and optimized pipe diameter, this system significantly improves exhaust gas flow, noticeably enhancing response, pulling power, and top-end performance . At the same time, it delivers a deep, powerful, and refined exhaust note , typical of HKS, without any annoying resonance at constant speeds.

The system is completely manufactured from high-quality stainless steel (SUS304) and developed with precise welding and perfect fit , making installation simple and durable.

⚠️Important : This version (31014-KT001) is only suitable for Supras without OPF . The flange construction differs from the OPF version, making this system not interchangeable with OPF models without modification.

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Key Features

✅ Double muffler design – sporty look & sound
✅ Deep and powerful HKS sound – aggressive under acceleration, comfortable when cruising
✅ Improved airflow & performance – lower back pressure and faster response
✅ Fully stainless steel (SUS304) – durable, heat and corrosion resistant
✅ Perfect OEM fit – direct replacement, no modifications required
✅ Made in Japan – premium quality from HKS

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Technical specifications

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Why choose the HKS Dual Muffler Catback system?

• Reliable HKS quality – known worldwide in motorsports and tuning

• Perfect balance – sporty but not overly loud

• Maximum performance – lower back pressure for higher power and faster response

• Visual upgrade – dual tailpipes give the Supra a more aggressive look

• Durable & low-maintenance – high-quality stainless steel with a precise finish

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Perfect to combine with:

• ECU remap / Stage 1-3 tuning – unleash the full potential of the B58 engine

• HKS, Wagner or Mishimoto cooling upgrades – for lower intake temperatures

• HKS Suspension upgrades – for a complete Supra performance setup

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Application

• Toyota GR Supra A90 / A91 (2019+, without OPF)

• B58 3.0L turbo engine

• Not suitable for OPF models without modifications

• Suitable for street use, track days and performance builds

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Installation

The HKS Dual Muffler Catback is a bolt-on system that fits the Supra's original mounting points. Installation is possible without permanent modifications.

For optimal performance, installation by a specialist is recommended.

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Delivery time & Availability

Original HKS Japan product – usually 6–8 weeks delivery time after ordering.

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In summary

• ✅ Premium Japanese exhaust system from HKS

• ✅ Sporty, deep and refined sound without drone

• ✅ Better airflow and performance due to lower back pressure

• ✅ Dual muffler design with OEM fit

• ✅ Specifically for the Supra without OPF – not compatible with OPF models

• ✅ Delivery time approx. 6–8 weeks

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With the HKS Dual Muffler Catback Exhaust System, you'll take your Toyota GR Supra A90 to the next level – in terms of performance, sound, and looks. An absolute must-have for Supra drivers who settle for only the very best.