HKS Stainless Front Pipe (with Catalyst)

HKS Stainless Front Pipe (with Catalyst) - Toyota GR86 / Subaru BRZ (2022+)

Increased Exhaust Flow, Weight Reduction & Refined JDM Sound

Maximize the breathing potential of your FA24 engine with the HKS Stainless Front Pipe. In the factory exhaust path, the front pipe is one of the most restrictive components, housing a dense catalyst and heavy resonators. HKS replaces this with a 60mm mandrel-bent SUS304 stainless steel unit equipped with a high-flow sports catalyzer and an integrated resonator. This design achieved a 30 percent greater flow capacity during flow-bench testing compared to stock, leading to sharper throttle response and improved mid-range torque. Tuned specifically to eliminate cabin drone, this front pipe provides the aggressive exhaust note you want without the "rasp" or discomfort of a catless system

What’s Included in the Box:

- HKS Stainless Front Pipe: One-piece SUS304 assembly with integrated sports catalyst.

- Premium Gaskets: High-temp gaskets for a leak-free seal.

- Installation Hardware: Specialized bolts and nuts for a direct bolt-on fit.

- HKS Performance Sticker: Signature branding for your build.

The HKS Performance Advantage

- 30 Percent Increased Flow: Flow-bench tested at 150L/s to ensure your engine can exhale efficiently, especially when paired with an HKS Hi-Power or Legamax cat-back system.

- Significant Weight Savings: At only 3.3kg (approx. 7.3 lbs), this unit is nearly 40 percent lighter than the bulky 5.5kg (12.1 lbs) factory front pipe.

- Frequency-Tuned Sound: HKS engineers used frequency test data to select the ideal combination of catalyst and resonator silencer. This ensures a powerful, deep tone that remains civil inside the cabin.

- High-Flow Sports Catalyst: The D62 high-flow cell provides minimal backpressure while still meeting basic filtration needs, ensuring your car doesn't have the "smell" or extreme volume of a fully catless setup.

- Mirror-Finish SUS304: Crafted from high-grade stainless steel for maximum corrosion resistance and a premium appearance that won't dull or rust over time.

- Direct Bolt-On Fitment: Designed as a 100 percent direct replacement for the factory pipe, utilizing all OEM mounting locations.

Product Specifications

- Part Number: 33004-BT003

- Main Material: SUS304 Stainless Steel

- Pipe Diameter: 60mm

- Catalyzer Diameter: 62mm

- Weight: 3.3 kg (HKS) vs 5.5 kg (Stock)

- Noise Increase: Approximately +6dB over stock

Vehicle Compatibility

- Toyota GR86 (2022, 2023, 2024, 2025, 2026+)

- Subaru BRZ (2022, 2023, 2024, 2025, 2026+)

Precision Tip: This front pipe is the "missing link" between a performance manifold and a cat-back exhaust. If you are already running the HKS Hi-Power SPEC-L II, adding this front pipe will noticeably deepen the exhaust note and improve the turbo-like "punch" of the FA24 in the mid-RPM range. When installing, always use the provided new gaskets—reusing old, crushed factory gaskets can lead to small exhaust leaks that trigger "Check Engine" lights.