HKS Metal Catalyzer & Front Pipe - Subaru Impreza GRB / GVB / VAB Twin Scroll
The HKS Metal Catalyzer & Front Pipe is designed for the Subaru Impreza WRX STI GRB, GVB, and VAB Twin Scroll, combining improved exhaust flow with high catalytic conversion efficiency. Engineered to reduce back pressure, improve turbo response, and maintain effective emissions control, it is an ideal upgrade for high-performance street and track vehicles.
The optimised design allows exhaust gases to flow more freely, resulting in faster turbo spool, improved throttle response, and increased engine performance. The HKS Metal Catalyzer is designed to support 500–600 PS engine builds while maintaining excellent exhaust purification performance.
Manufactured from high-quality materials, the system offers outstanding heat resistance, long-lasting durability, and reliable performance under demanding driving conditions. It is available with either an oval (Ø85–Ø90 mm) or round (Ø115 mm) connection, depending on the application, and requires flange welding for installation.
The HKS Metal Catalyzer & Front Pipe is the perfect choice for enthusiasts who want to combine high performance with efficient emissions control and sharper turbo response.
Features
- Fits the Subaru Impreza WRX STI GRB, GVB, and VAB Twin Scroll.
- HKS Metal Catalyzer & Front Pipe.
- Improved exhaust flow with reduced back pressure.
- Faster turbo spool and improved throttle response.
- High catalytic conversion efficiency with excellent performance.
- Designed for 500–600 PS engine builds.
- Manufactured from high-quality materials for long-lasting durability.
- Available with oval (Ø85–Ø90 mm) or round (Ø115 mm) connections.
- Flange welding required depending on the installation.
