HKS Super Turbo Muffler Exhaust System for Toyota GR Yaris Gen 2 2024+
The long-awaited Gen2 compatible muffler is here!
Pursuing sound, performance, and appearance, bringing out the sports car aesthetic!
■Features
- Aiming to achieve both low exhaust pressure and quietness. We have used the knowledge we have cultivated through the product development of the previous gen GR Yaris and GR Corolla!
- We have suppressed the unpleasant muffled noise at normal RPMs while emphasizing a powerful, sporty sound at throttle. We believe the sound quality which makes driving more enjoyable.
- The optimized pipe layout and straight structure inside the silencer achieves extremely low exhaust pressure.
- HKS rubber stays and a special bracket are included to reduce lateral movements of the muffler during sporty driving.
| Cert. No. | JQR30242093 |
|---|
| Vehicle | GR YARIS |
|---|---|
| Model | GXPA16 |
| Engine | G16E-GTS |
| Model Year | 24/04 - |
| Shape of muffler | SSR (Super Turbo Muffler) |
|
|---|---|---|
| Main material | S304 | |
| Diameter of tip | 110 L&R | |
| Diameter of center pipe | 74.7 → 60.5 × 2 (*1) | |
| Close noise level | Stock | 81 |
| HKS | 91 | |
| About road clearance(*2) | Clearance | 120mm |
| Portion of the kit | Front Member | |
| Remarks | ||
| Product Weight | 15.7kg | |
Remarks
Compatible with AT and MT. Not compatible with vehicles with 17-inch wheels or rear constant speed differentials. Cannot be installed on Gen 1 vehicles
●Performance comparison


- The maximum values for both power and torque exceeded the stock system
- When measuring the power output, we also measured the exhaust pressure (*). As the engine speed increased, the difference became larger, confirming a significant reduction in exhaust pressure.
- With improved exhaust efficiency, making a muffler that will show its true value in further tuning!!
Power/ Torque maximum value
| HKS | Stock | |
| Power [kW(PS)/rpm] | 205.5(279.4)/6500 | 203.7(277.0)/6400 |
| Torque [Nm(kgf・m)/rpm] | 398.2(40.6)/4400 | 394.3(40.2)/4400 |
Notes regarding the notations in the graph and table:
STM: Super Turbo Muffler 31029-AT017 (used for testing)
- Exhaust pressure is measured between the spherical flange and the middle silencer.
- Since the stock ECU uses torque-based output management, simply replacing the muffler will give the same output as the stock product.
- Graphs and figures are the results of in-house testing. They may vary depending on the vehicle and measuring equipment.
Test Vehicle: GR Yaris 4BA-GXPA16
Vehicle Specs: Super Turbo Muffler 31029-AT017
(All other parts were stock)
●Appearance & Layout Comparison
31029-AT017
The knowledge cultivated through the development of the previous gen GR Yaris and GR Corolla has been fully utilized!

- This product was developed based on data accumulated from the development of the earlier gen GR Yaris and GR Corolla, and the optimal layout, including silencer configuration and pipe length, was derived.
- It controls unpleasant low tones and reduces muffled noise inside the car at normal RPMs, while producing a sporty sound making it clear that you have changed the muffler!
- The rich low tones have a strong feel, and the sound quality matches the powerful feeling of the GR Yaris.
- It has a two-part configuration of an intermediate and a main muffler.
GR Yaris Stock Muffler

- Immediately after the flange the pipe is becomes 70mm
- After the intermediate silencer, it becomes 65mm.
- The silencer is designed to distribute the exhaust to the left and right.
- One piece structure with no divisions.
●Appearance comparison
- We pay attention not only to performance but also to the visual details.
- The main muffler is TIG welded and carefully finished by our skilled craftsmen one by one.
- The products produced using our outstanding technology are finished with both strength and beauty.
Check Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.
The long-awaited Gen2 compatible muffler is here!
Pursuing sound, performance, and appearance, bringing out the sports car aesthetic!
■Features
- Aiming to achieve both low exhaust pressure and quietness. We have used the knowledge we have cultivated through the product development of the previous gen GR Yaris and GR Corolla!
- We have suppressed the unpleasant muffled noise at normal RPMs while emphasizing a powerful, sporty sound at throttle. We believe the sound quality which makes driving more enjoyable.
- The optimized pipe layout and straight structure inside the silencer achieves extremely low exhaust pressure.
- HKS rubber stays and a special bracket are included to reduce lateral movements of the muffler during sporty driving.
| Cert. No. | JQR30242093 |
|---|
| Vehicle | GR YARIS |
|---|---|
| Model | GXPA16 |
| Engine | G16E-GTS |
| Model Year | 24/04 - |
| Shape of muffler | SSR (Super Turbo Muffler) |
|
|---|---|---|
| Main material | S304 | |
| Diameter of tip | 110 L&R | |
| Diameter of center pipe | 74.7 → 60.5 × 2 (*1) | |
| Close noise level | Stock | 81 |
| HKS | 91 | |
| About road clearance(*2) | Clearance | 120mm |
| Portion of the kit | Front Member | |
| Remarks | ||
| Product Weight | 15.7kg | |
Remarks
Compatible with AT and MT. Not compatible with vehicles with 17-inch wheels or rear constant speed differentials. Cannot be installed on Gen 1 vehicles
●Performance comparison


- The maximum values for both power and torque exceeded the stock system
- When measuring the power output, we also measured the exhaust pressure (*). As the engine speed increased, the difference became larger, confirming a significant reduction in exhaust pressure.
- With improved exhaust efficiency, making a muffler that will show its true value in further tuning!!
Power/ Torque maximum value
| HKS | Stock | |
| Power [kW(PS)/rpm] | 205.5(279.4)/6500 | 203.7(277.0)/6400 |
| Torque [Nm(kgf・m)/rpm] | 398.2(40.6)/4400 | 394.3(40.2)/4400 |
Notes regarding the notations in the graph and table:
STM: Super Turbo Muffler 31029-AT017 (used for testing)
- Exhaust pressure is measured between the spherical flange and the middle silencer.
- Since the stock ECU uses torque-based output management, simply replacing the muffler will give the same output as the stock product.
- Graphs and figures are the results of in-house testing. They may vary depending on the vehicle and measuring equipment.
Test Vehicle: GR Yaris 4BA-GXPA16
Vehicle Specs: Super Turbo Muffler 31029-AT017
(All other parts were stock)
●Appearance & Layout Comparison
31029-AT017
The knowledge cultivated through the development of the previous gen GR Yaris and GR Corolla has been fully utilized!

- This product was developed based on data accumulated from the development of the earlier gen GR Yaris and GR Corolla, and the optimal layout, including silencer configuration and pipe length, was derived.
- It controls unpleasant low tones and reduces muffled noise inside the car at normal RPMs, while producing a sporty sound making it clear that you have changed the muffler!
- The rich low tones have a strong feel, and the sound quality matches the powerful feeling of the GR Yaris.
- It has a two-part configuration of an intermediate and a main muffler.
GR Yaris Stock Muffler

- Immediately after the flange the pipe is becomes 70mm
- After the intermediate silencer, it becomes 65mm.
- The silencer is designed to distribute the exhaust to the left and right.
- One piece structure with no divisions.
●Appearance comparison
- We pay attention not only to performance but also to the visual details.
- The main muffler is TIG welded and carefully finished by our skilled craftsmen one by one.
- The products produced using our outstanding technology are finished with both strength and beauty.
Check Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.
Description
The long-awaited Gen2 compatible muffler is here!
Pursuing sound, performance, and appearance, bringing out the sports car aesthetic!
■Features
- Aiming to achieve both low exhaust pressure and quietness. We have used the knowledge we have cultivated through the product development of the previous gen GR Yaris and GR Corolla!
- We have suppressed the unpleasant muffled noise at normal RPMs while emphasizing a powerful, sporty sound at throttle. We believe the sound quality which makes driving more enjoyable.
- The optimized pipe layout and straight structure inside the silencer achieves extremely low exhaust pressure.
- HKS rubber stays and a special bracket are included to reduce lateral movements of the muffler during sporty driving.
| Cert. No. | JQR30242093 |
|---|
| Vehicle | GR YARIS |
|---|---|
| Model | GXPA16 |
| Engine | G16E-GTS |
| Model Year | 24/04 - |
| Shape of muffler | SSR (Super Turbo Muffler) |
|
|---|---|---|
| Main material | S304 | |
| Diameter of tip | 110 L&R | |
| Diameter of center pipe | 74.7 → 60.5 × 2 (*1) | |
| Close noise level | Stock | 81 |
| HKS | 91 | |
| About road clearance(*2) | Clearance | 120mm |
| Portion of the kit | Front Member | |
| Remarks | ||
| Product Weight | 15.7kg | |
Remarks
Compatible with AT and MT. Not compatible with vehicles with 17-inch wheels or rear constant speed differentials. Cannot be installed on Gen 1 vehicles
●Performance comparison


- The maximum values for both power and torque exceeded the stock system
- When measuring the power output, we also measured the exhaust pressure (*). As the engine speed increased, the difference became larger, confirming a significant reduction in exhaust pressure.
- With improved exhaust efficiency, making a muffler that will show its true value in further tuning!!
Power/ Torque maximum value
| HKS | Stock | |
| Power [kW(PS)/rpm] | 205.5(279.4)/6500 | 203.7(277.0)/6400 |
| Torque [Nm(kgf・m)/rpm] | 398.2(40.6)/4400 | 394.3(40.2)/4400 |
Notes regarding the notations in the graph and table:
STM: Super Turbo Muffler 31029-AT017 (used for testing)
- Exhaust pressure is measured between the spherical flange and the middle silencer.
- Since the stock ECU uses torque-based output management, simply replacing the muffler will give the same output as the stock product.
- Graphs and figures are the results of in-house testing. They may vary depending on the vehicle and measuring equipment.
Test Vehicle: GR Yaris 4BA-GXPA16
Vehicle Specs: Super Turbo Muffler 31029-AT017
(All other parts were stock)
●Appearance & Layout Comparison
31029-AT017
The knowledge cultivated through the development of the previous gen GR Yaris and GR Corolla has been fully utilized!

- This product was developed based on data accumulated from the development of the earlier gen GR Yaris and GR Corolla, and the optimal layout, including silencer configuration and pipe length, was derived.
- It controls unpleasant low tones and reduces muffled noise inside the car at normal RPMs, while producing a sporty sound making it clear that you have changed the muffler!
- The rich low tones have a strong feel, and the sound quality matches the powerful feeling of the GR Yaris.
- It has a two-part configuration of an intermediate and a main muffler.
GR Yaris Stock Muffler

- Immediately after the flange the pipe is becomes 70mm
- After the intermediate silencer, it becomes 65mm.
- The silencer is designed to distribute the exhaust to the left and right.
- One piece structure with no divisions.
●Appearance comparison
- We pay attention not only to performance but also to the visual details.
- The main muffler is TIG welded and carefully finished by our skilled craftsmen one by one.
- The products produced using our outstanding technology are finished with both strength and beauty.
Check Note
Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.





















