HKS Super Turbo Muffler Exhaust System Toyota GR Yaris (2020+) – 31029-AT006

HKS Super Turbo Muffler Exhaust System – Toyota GR Yaris (2020+)

The HKS Super Turbo Muffler is a high-quality exhaust system designed for the Toyota GR Yaris (2020+). It aims to support higher power while keeping sound levels refined and comfortable for daily use.

What this exhaust does

This system replaces the standard GR Yaris exhaust with a freer-flowing design. HKS has reduced exhaust back pressure by about 30% compared to the stock system. Lower back pressure helps the engine breathe more easily, which can support higher power levels and sharper throttle response when combined with other tuning.

HKS states that this Super Turbo Muffler is suitable for builds of around 500 bhp when matched with the right turbo and engine upgrades. On a standard or lightly tuned GR Yaris, you should expect improved response and a more engaging sound, rather than a dramatic power jump on its own.

Sound and everyday use

This exhaust is built to give a stronger, sportier sound without being annoying on a long drive:

• Silent chamber and special silencer help reduce low-frequency drone in the cabin at cruising speeds.
• Deeper, more powerful tone under load and on acceleration.
• Refined noise level at idle to keep the car civil in town and early in the morning.

The goal is a system that sounds aggressive when you want it to, but stays reasonable when you are just commuting.

Design and performance features

The Super Turbo Muffler uses a large diameter centre pipe (this is the main section of the exhaust under the car) to improve flow. This is the section with the biggest pipe size in the system, excluding the silencer and exhaust tips. The layout is designed to balance performance, sound quality and ground clearance on a lowered hot hatch.

HKS pays particular attention to:

• Pipe routing for smooth gas flow and minimal turbulence.
• Muffler design for a clean tone rather than harsh noise.
• Tip design to suit the aggressive styling of the GR Yaris.

Fitment information

This exhaust is designed specifically for the Toyota GR Yaris (from 2020 onwards). Brackets, hooks and stays are made to mount to the factory points, though HKS may update these small fittings without notice.

Please note: Actual ground clearance can vary, especially if your car is on lowering springs or coilovers. The minimum clearance figures quoted by HKS are measured from the lowest point of the HKS exhaust to the road on a car with original suspension, unless otherwise listed. If your car is lowered, expect reduced clearance.

To confirm this part fits your exact model and engine, please use the vehicle lookup tool on the Progressive Parts website or check the “Vehicle Fitment” tab for full details.

Who this exhaust is for

The HKS Super Turbo Muffler suits GR Yaris owners who:

• Plan to tune the car and want an exhaust that can support higher power.
• Want a stronger, sportier sound but still drive the car daily.
• Prefer a high-quality system from a well-known Japanese tuning brand.

If you are aiming for a balanced fast-road GR Yaris with sensible manners on the motorway, this system is designed with that use in mind.