The Borla S-Type axle-back for the fourth-generation Mazda 3 Hatchback replaces the stock rear muffler as a direct bolt-on. The 2.5in into dual 2in system is tuned for the 2.0L and 2.5L Skyactiv engines and delivers a sportier sound and a more exciting drive without any drone. It features 4in round black chrome on T-304 stainless steel tips that fill out the rear bumper cutouts. A bright chrome tip version is also offered as 11970. Ultra-smooth mandrel bends ensure maximum flow and power, and precision CNC manufacturing ensures an accurate fit. This axle-back installs behind the factory catalytic converter and retains all factory emissions equipment. It is made in the USA and backed by Borla's Million-Mile Warranty.
Specifications:
- System type: Axle-Back exhaust system
- Sound level: S-Type (moderate)
- Material: T-304 stainless steel
- System diameter: 2.5in into dual 2in
- Tips: 4in round black chrome on T-304 stainless
- Construction: mandrel-bent, CNC-manufactured, direct bolt-on
- No-drone design
- Made in the USA
- Warranty: Borla Million-Mile Warranty
- Part number: 11970BC
Vehicle Applications:
- 2019 Mazda 3
- 2020 Mazda 3
- 2021 Mazda 3
- 2022 Mazda 3
- 2023 Mazda 3
- 2024 Mazda 3
- 2025 Mazda 3
FAQ
What does the Borla 11970BC fit?
It fits 2019-2025 Mazda 3 Hatchback models with the 2.0L and 2.5L Skyactiv engines. See the Vehicle Applications list for the full year breakdown.
How does the S-Type sound level compare?
S-Type is Borla's mid-level sound. It delivers a sportier, more pronounced tone than the stock Mazda 3 exhaust while staying free of interior drone thanks to Borla's No-Drone guarantee.
Is this axle-back street legal?
This axle-back replaces the stock rear muffler behind the catalytic converter and does not remove or alter any factory emissions equipment. Borla states that its street cat-back, rear-section, axle-back, and muffler systems are 50-state emissions legal. Confirm emissions compliance for your specific year and model before purchase.
How should the black chrome tips be cleaned?
The black chrome tips should be cleaned with hot water and a microfiber cloth. Borla stainless steel polish is not recommended on these black chrome tips. The system is made in the USA and backed by Borla's Million-Mile Warranty.
