HKS Part Number: 31013-BZ001
The HKS Hi-Power Cat-Back Exhaust for the Mazdaspeed3 Gen1 is a premium performance exhaust system engineered to increase exhaust flow, enhance turbo response, and deliver an aggressive yet refined exhaust tone on the 2.3L DISI turbo platform.
Designed using HKS’s motorsports exhaust technology, this system replaces the restrictive factory exhaust with larger-diameter piping and a high-flow muffler design. The result is improved horsepower potential, reduced backpressure, and a deeper, more performance-focused sound character that complements both stock and modified Mazdaspeed3 builds.
If you’re searching for a Mazdaspeed3 cat-back exhaust, this system represents one of the most proven and iconic exhaust upgrades available for the Gen1 Mazdaspeed3.
Upgrading the cat-back exhaust on a turbocharged vehicle like the Mazdaspeed3 delivers multiple performance and driving experience improvements:
Increased exhaust flow and reduced backpressure
Improved turbo spool and throttle response
Enhanced horsepower and torque potential
Aggressive, sporty exhaust tone
Reduced turbo lag and smoother power delivery
The HKS Hi-Power system is engineered to provide an unobstructed exhaust path while maintaining durability and OEM-level fitment.
The HKS Hi-Power cat-back exhaust is built using premium materials and precision manufacturing techniques to ensure performance, durability, and fitment.
System design and specifications:
Cat-back exhaust system with single rear exit
Approximately 75 mm (≈3″) main piping diameter
High-flow muffler design optimized for turbocharged engines
Single large-diameter exhaust tip (~115 mm / 4.5″)
304 stainless steel construction with polished sections
Mandrel-bent piping for smooth exhaust flow
This combination of materials and design delivers improved exhaust efficiency while maintaining long-term corrosion resistance and structural integrity.
The HKS Hi-Power exhaust is known for its distinctive sound profile:
Deep, aggressive tone under acceleration
Noticeable turbo and exhaust presence without excessive rasp
Louder and more performance-oriented than the factory exhaust
This system is ideal for enthusiasts who want a true performance sound without resorting to extreme straight-pipe setups.
While a cat-back exhaust alone does not typically require tuning, it significantly improves exhaust flow and supports higher horsepower levels when combined with supporting modifications such as downpipes, intercoolers, and tuning.
When paired with a high-flow downpipe, the HKS system can contribute to noticeable power gains and a more aggressive driving experience.
Mazdaspeed3 Gen1 (2007–2009)
Engine: 2.3L DISI Turbo (L3-VDT)
Designed specifically for the BK-chassis Mazdaspeed3 for direct bolt-on installation.
Many aftermarket exhaust systems focus on volume or cost, but the HKS Hi-Power system is engineered to deliver a balanced combination of performance, sound quality, and durability.
Compared to the stock exhaust, the HKS system offers:
Higher exhaust flow and reduced restriction
More aggressive sound character
Improved performance potential
Compared to generic aftermarket exhausts, HKS stands out for:
Proven motorsports engineering
Premium materials and construction
OEM-like fitment and reliability
Iconic JDM sound and styling
The Hi-Power exhaust has become one of the most recognizable performance exhaust systems in the tuning world.
Will this exhaust increase horsepower?
Yes. By reducing exhaust restriction, the system supports increased horsepower and torque potential, especially when combined with other modifications.
Is tuning required?
No. A cat-back exhaust does not require tuning by itself, but tuning is recommended when paired with a downpipe or other performance mods.
How loud is the HKS Hi-Power exhaust?
The system produces an aggressive, sporty sound that is significantly louder than stock but designed to remain refined rather than harsh.
Is this exhaust street legal?
Sound levels and legality vary by location. Always check local regulations regarding exhaust modifications.
Does this fit aftermarket downpipes?
Yes. The HKS system is compatible with stock and most aftermarket downpipes.
HKS Part Number: 31013-BZ001
The HKS Hi-Power Cat-Back Exhaust for the Mazdaspeed3 Gen1 is a premium performance exhaust system engineered to increase exhaust flow, enhance turbo response, and deliver an aggressive yet refined exhaust tone on the 2.3L DISI turbo platform.
Designed using HKS’s motorsports exhaust technology, this system replaces the restrictive factory exhaust with larger-diameter piping and a high-flow muffler design. The result is improved horsepower potential, reduced backpressure, and a deeper, more performance-focused sound character that complements both stock and modified Mazdaspeed3 builds.
If you’re searching for a Mazdaspeed3 cat-back exhaust, this system represents one of the most proven and iconic exhaust upgrades available for the Gen1 Mazdaspeed3.
Upgrading the cat-back exhaust on a turbocharged vehicle like the Mazdaspeed3 delivers multiple performance and driving experience improvements:
Increased exhaust flow and reduced backpressure
Improved turbo spool and throttle response
Enhanced horsepower and torque potential
Aggressive, sporty exhaust tone
Reduced turbo lag and smoother power delivery
The HKS Hi-Power system is engineered to provide an unobstructed exhaust path while maintaining durability and OEM-level fitment.
The HKS Hi-Power cat-back exhaust is built using premium materials and precision manufacturing techniques to ensure performance, durability, and fitment.
System design and specifications:
Cat-back exhaust system with single rear exit
Approximately 75 mm (≈3″) main piping diameter
High-flow muffler design optimized for turbocharged engines
Single large-diameter exhaust tip (~115 mm / 4.5″)
304 stainless steel construction with polished sections
Mandrel-bent piping for smooth exhaust flow
This combination of materials and design delivers improved exhaust efficiency while maintaining long-term corrosion resistance and structural integrity.
The HKS Hi-Power exhaust is known for its distinctive sound profile:
Deep, aggressive tone under acceleration
Noticeable turbo and exhaust presence without excessive rasp
Louder and more performance-oriented than the factory exhaust
This system is ideal for enthusiasts who want a true performance sound without resorting to extreme straight-pipe setups.
While a cat-back exhaust alone does not typically require tuning, it significantly improves exhaust flow and supports higher horsepower levels when combined with supporting modifications such as downpipes, intercoolers, and tuning.
When paired with a high-flow downpipe, the HKS system can contribute to noticeable power gains and a more aggressive driving experience.
Mazdaspeed3 Gen1 (2007–2009)
Engine: 2.3L DISI Turbo (L3-VDT)
Designed specifically for the BK-chassis Mazdaspeed3 for direct bolt-on installation.
Many aftermarket exhaust systems focus on volume or cost, but the HKS Hi-Power system is engineered to deliver a balanced combination of performance, sound quality, and durability.
Compared to the stock exhaust, the HKS system offers:
Higher exhaust flow and reduced restriction
More aggressive sound character
Improved performance potential
Compared to generic aftermarket exhausts, HKS stands out for:
Proven motorsports engineering
Premium materials and construction
OEM-like fitment and reliability
Iconic JDM sound and styling
The Hi-Power exhaust has become one of the most recognizable performance exhaust systems in the tuning world.
Will this exhaust increase horsepower?
Yes. By reducing exhaust restriction, the system supports increased horsepower and torque potential, especially when combined with other modifications.
Is tuning required?
No. A cat-back exhaust does not require tuning by itself, but tuning is recommended when paired with a downpipe or other performance mods.
How loud is the HKS Hi-Power exhaust?
The system produces an aggressive, sporty sound that is significantly louder than stock but designed to remain refined rather than harsh.
Is this exhaust street legal?
Sound levels and legality vary by location. Always check local regulations regarding exhaust modifications.
Does this fit aftermarket downpipes?
Yes. The HKS system is compatible with stock and most aftermarket downpipes.
