The Catalytic Silencer HCS301 is a motorsport-specific, straight-through stainless steel pipe engineered to replace the restrictive factory catalytic converter on legendary Honda B-series VTEC engines.

Designed exclusively for competition use, this critical component eliminates exhaust restriction at its source, providing significant gains in power, throttle response, and engine character for Integra Type R (DC2/DB8) and Civic Type R (EK9) models in closed-course environments.

Product Highlights

🏁 COMPETITION-ONLY DECAT DESIGN
This is a direct, non-catted replacement for the factory catalytic converter. Its straight-through, competition-only design is not legal for public road use, providing the unrestricted exhaust flow essential for maximum performance in track and competitive settings.

📈 MAXIMIZE VTEC ENGINE PERFORMANCE
By eliminating the primary catalytic converter, this pipe dramatically reduces exhaust backpressure. This allows the high-revving B18C and B16B engines to expel gases more efficiently, resulting in improved throttle response, increased top-end power, and a more pronounced VTEC crossover—key advantages for circuit driving.

🔧 UNIVERSAL FIT FOR ICONIC TYPE R CHASSIS
Engineered as a direct bolt-on component for the most revered Honda chassis, connecting the exhaust manifold to the front pipe or exhaust system.

• Compatible with: Honda Integra Type R (DC2 Coupe & DB8 Sedan, all years) and Civic Type R (EK9, all years).

• Engines: B18C (SPEC-R) and B16B (SPEC-R).

⚙️ PRECISION STAINLESS STEEL CONSTRUCTION
Crafted from high-quality stainless steel for durability under extreme track temperatures. The single-piece design ensures optimal flow and a secure, leak-free connection.

Technical Specifications & Application

This is a competition-use, straight-through catalytic converter replacement pipe for select Honda Type R models.

Key Details

• Product Name: Catalytic Silencer (Competition Use Only)

• Product Code: HCS301

• JAN Code: 4512355130388

• Stock Status: In Stock

Vehicle Compatibility
HONDA INTEGRA TYPE R

• Chassis Codes: E-DC2, GF-DC2 (Coupe); E-DB8, GF-DB8 (Sedan)

• Engine: 1.8L B18C (SPEC-R)

• Model Years: October 1995 – July 2001

HONDA CIVIC TYPE R (EK9)

• Chassis Codes: E-EK9, GF-EK9

• Engine: 1.6L B16B (SPEC-R)

• Model Years: August 1997 – September 2000

Construction & Dimensions

• Material: Full Stainless Steel

• Pipe Diameter: 70 mm

• Assembly Sections: 1

• Shipping Weight: 2.6 kg

• Packaged Dimensions: 385 mm × 165 mm × 180 mm

• Core Function: Catalytic converter removal and replacement.