KYOSTAR Valved Sport Catback Exhaust System for 2017-2021 Audi RS3 8V Sedan 2018-2022 Audi TT RS 8S Coupe 2.5T

KYOSTAR Valved Sport Catback Exhaust System for 2017-2021 Audi RS3 8V Sedan 2018-2022 Audi TT RS 8S Coupe 2.5T

Bring a more distinctive exhaust character to your Audi with the KYOSTAR Valved Sport Catback Exhaust System. Listed for compatible 2017-2021 Audi RS3 8V Sedans and 2018-2022 Audi TT RS 8S Coupes, this aftermarket exhaust system combines a sport-oriented pipe layout with a valved rear exhaust configuration.

Designed for Audi performance enthusiasts looking to personalize their exhaust setup, the KYOSTAR system features shaped metal piping, a rear muffler assembly, and a dual-side exhaust outlet layout as shown in the supplied product image.

The valved configuration provides an exhaust valve mechanism that may change the available exhaust flow path depending on its operating position. The exact valve control method, actuator compatibility, and included electronic accessories must be confirmed before purchase.

Whether you're upgrading an Audi RS3 Sedan or TT RS Coupe, this exhaust system offers a performance-inspired alternative to compatible factory exhaust components.

Features

• Valved sport catback exhaust system for compatible Audi RS3 and TT RS applications.
• Listed for 2017-2021 Audi RS3 8V Sedan models.
• Listed for 2018-2022 Audi TT RS 8S Coupe models.
• Sport-oriented aftermarket exhaust configuration.
• Valved rear exhaust design.
• Shaped metal exhaust piping visible in the product image.
• Rear muffler assembly shown in the supplied image.
• Dual-side rear exhaust outlet layout.
• Silver-colored metal exhaust appearance.
• Aftermarket alternative to compatible factory exhaust components.
• Designed for owners seeking a different exhaust tone and driving character.
• Vehicle-specific application for the listed Audi performance models.
• Catback-style exhaust system as identified in the source product title.
• Professional installation and valve-system verification recommended.

Fitment

Audi RS3:

• 2017-2021 Audi RS3 Sedan (8V) — source-listed fitment range; verify exact production year and exhaust configuration.

Audi TT RS:

• 2018-2022 Audi TT RS Coupe (8S) — source-listed fitment range; verify exact production year and exhaust configuration.

Vehicle Make: Audi

Chassis: 8V / 8S

Engine Platform: 2.5L Turbocharged Five-Cylinder (vehicle platform reference; verify exact engine configuration)

Exhaust Type: Valved Sport Catback Exhaust

Important Fitment Note

Please verify your Audi model, chassis code, production year, factory exhaust configuration, and rear exhaust connection layout before ordering.

The source product title identifies a 2017-2020 application range, while the supplied fitment column lists 2017-2021 Audi RS3 8V Sedan and 2018-2022 Audi TT RS 8S Coupe applications. Exact model-year coverage should be confirmed before purchase.

The supplied information does not independently confirm that the same exhaust assembly fits both vehicle platforms without vehicle-specific mounting differences or additional components.

Compatibility with Audi RS3 8Y, Audi S3, Audi TT, Audi TTS, Audi A3, or other Audi platforms is not confirmed.

Vehicles equipped with aftermarket downpipes, modified exhaust systems, or non-factory exhaust valve controls may require additional fitment verification.

Before purchase, compare the factory exhaust layout with the product images and verify the pipe connections, hanger positions, rear bumper clearance, and valve system requirements.

Fitment Note

The KYOSTAR Valved Sport Catback Exhaust System is listed for compatible Audi RS3 8V Sedan and Audi TT RS 8S Coupe applications.

A catback exhaust generally refers to exhaust components installed downstream of the catalytic converter section. The exact included pipe sections should be verified against the complete product package.

The supplied product image shows formed exhaust piping, a rear muffler assembly, and dual-side exhaust outlets.

This product is identified as valved. The exact valve actuator type, electronic control method, remote controller inclusion, and compatibility with original factory exhaust controls are not specified.

The supplied product information does not confirm the pipe diameter, material grade, wall thickness, exhaust tip dimensions, system weight, measured sound levels, or verified horsepower and torque gains.

An aftermarket exhaust system may change exhaust tone, volume, and driving characteristics compared with the factory configuration. Actual results depend on the vehicle, exhaust components, valve operation, and other modifications.

No specific numerical performance improvement is claimed without supporting vehicle-specific test data.

Professional installation is recommended. Verify the exact application and exhaust valve configuration before ordering.

Product Details & Technical Specifications

Why Upgrade Your Factory Exhaust?

The factory Audi RS3 and TT RS exhaust systems are engineered to balance exhaust sound, everyday driving comfort, and vehicle refinement.

An aftermarket valved exhaust provides an alternative exhaust configuration for drivers who want to personalize the sound and appearance of their performance vehicle.

The KYOSTAR Valved Sport Catback Exhaust combines a sport exhaust layout with a valved rear section for compatible Audi performance applications.

Actual exhaust tone and driving characteristics depend on the complete exhaust configuration, valve operation, and installed modifications. No specific decibel level, horsepower increase, or torque gain is claimed without supporting test data.

FAQ

Q: What Audi models does this exhaust system fit?
A: It is listed for compatible Audi RS3 8V Sedan and Audi TT RS 8S Coupe applications within the source-listed model-year ranges.

Q: Will this fit a 2018 Audi RS3 Sedan?
A: The 2018 RS3 Sedan falls within the listed range. Confirm the exact factory exhaust configuration before purchase.

Q: Will this fit a 2021 Audi RS3?
A: The source fitment column includes 2021 RS3 8V Sedan applications, but exact production-year compatibility requires confirmation.

Q: Will this fit a 2020 Audi TT RS Coupe?
A: The 2020 TT RS Coupe falls within the source-listed range. Verify the factory exhaust layout and mounting points before ordering.

Q: Will this fit a 2022 Audi TT RS?
A: The fitment column includes 2022 TT RS 8S Coupe applications, but exact compatibility should be confirmed because the source product title lists a shorter overall year range.

Q: Does this exhaust have valves?
A: Yes. The supplied product name explicitly identifies a valved exhaust configuration.

Q: Does it include a remote controller?
A: A remote controller is not confirmed in the supplied product information.

Q: Can I reuse my factory exhaust valve actuators?
A: Factory actuator compatibility has not been confirmed. Please verify before purchase.

Q: Is this a complete catback exhaust system?
A: The source title identifies it as a catback exhaust, but the exact included pipe sections should be confirmed.

Q: Is this made from stainless steel?
A: The specific material and stainless steel grade are not explicitly confirmed in the supplied product description.

Q: What is the exhaust pipe diameter?
A: The exact pipe diameter has not been provided.

Q: Will this fit an Audi RS3 8Y?
A: Compatibility with the newer RS3 8Y platform is not confirmed.

Q: Will this change the exhaust sound?
A: An aftermarket valved exhaust may change exhaust tone and volume. Actual results depend on the complete vehicle setup.

Q: Does this exhaust increase horsepower?
A: No verified dyno data is supplied, so no specific horsepower or torque gain is claimed.

Q: Does this require ECU tuning?
A: A tuning requirement is not specified. Please verify based on your vehicle and existing modifications.

Q: Is professional installation recommended?
A: Yes. Professional installation is recommended to ensure correct exhaust fitment, secure mounting, and proper valve operation.

Installation Note

Allow the exhaust system to cool completely before beginning installation.

Securely raise and support the vehicle using appropriate lifting equipment and manufacturer-approved lifting points.

Inspect the factory exhaust system and verify that the KYOSTAR exhaust components match the intended vehicle's connection points and mounting locations.

Install the exhaust components using the appropriate hardware and procedures for the specific Audi model.

If the system uses exhaust valve actuators or electronic control components, verify their compatibility and installation requirements before connecting or operating the valve system.

Before final tightening, confirm proper exhaust alignment, hanger positioning, and clearance from nearby underbody and rear bumper components.

After installation, inspect all exhaust joints, mounting points, and valve components. Check for exhaust leaks, rattles, vibration, and interference.

Professional installation is recommended.

Warranty & Shipping

Please review the applicable KYOSTAR warranty terms before purchasing. Warranty coverage, duration, and exclusions are subject to the policy in effect at the time of purchase.

Inspect the product upon delivery for visible shipping damage, missing components, or other concerns. Retain the original packaging and contact KYOSTAR customer support if an issue is identified.

Before installation, verify that the received product matches SKU NA-CB-5109-SS-MB and your intended Audi RS3 8V Sedan or TT RS 8S Coupe application.

Exhaust noise and modification regulations vary by location. Please confirm applicable local requirements before installation or road use.

For fitment assistance, valve-system questions, installation support, shipping information, or after-sales service, please contact KYOSTAR customer service.