HKS Hi-Power Exhaust

1985–1987 Toyota GR Corolla

32003-AT011

Overview:

The HKS Hi-Power Exhaust system is a high-performance upgrade designed specifically for the 1985 to 1987 Toyota GR Corolla. Engineered to enhance both turbocharged and naturally aspirated engines, this exhaust system delivers improved exhaust flow and power gains by minimizing restrictions in the exhaust path. Ideal for enthusiasts seeking a balance of street-friendly sound and enhanced engine responsiveness, the Hi-Power Exhaust offers a race-inspired design that supports higher RPM power and better mid-range boost response.

Developed with precision, this exhaust system is tailored to the Japanese specification of the Toyota Corolla Sport [GTS], ensuring a perfect fit and optimal performance for this classic model.

Key Features:

The HKS Hi-Power Exhaust incorporates advanced engineering to maximize performance and durability. Key features include:

• Race-inspired offset muffler and piping design for improved exhaust flow
• Elimination of unnecessary bends to create the straightest exhaust path possible
• Optimized for both turbocharged and naturally aspirated engines
• Large, smooth exhaust flow enhances mid-range boost response and high-RPM power
• Japanese specification fitment tailored for the 1985–1987 Toyota GR Corolla
• 96mm diameter muffler tip and 60mm piping diameter for balanced sound and performance
• Constructed from SUS304 stainless steel for corrosion resistance and longevity
• Available in Silent Hi-Power versions with inner silencers for reduced noise levels (application dependent)
• Special Edition Carbon Titanium versions available for select models (not included with this SKU)

Construction & Design:

The HKS Hi-Power Exhaust is crafted from premium SUS304 stainless steel, known for its excellent corrosion resistance and durability under high temperatures. The muffler and tip assemblies are precision-welded to ensure a leak-free, robust construction that withstands rigorous driving conditions. The design focuses on reducing exhaust backpressure by removing unnecessary bends and creating a straighter exhaust flow path, which contributes to improved engine efficiency and power output.

The 96mm diameter tip and 60mm piping diameter are carefully selected to balance sound quality with performance gains, delivering a deep yet refined exhaust note suitable for street use.

Performance & Sound

The Hi-Power Exhaust system enhances engine performance by increasing exhaust velocity and flow capacity. Turbocharged engines benefit from quicker spool times and improved mid-range boost response, while naturally aspirated engines see gains as tuning levels increase. The exhaust note is sporty and aggressive without being overly loud, making it an excellent choice for daily-driven performance vehicles.

Installation & Fitment:

This exhaust system is designed for direct fitment on the 1985 to 1987 Toyota GR Corolla Sport [GTS] Japanese specification models. Installation typically requires no modifications, allowing for a straightforward bolt-on upgrade. Professional installation is recommended to ensure proper alignment and sealing for optimal performance and longevity.

What's Included:

• HKS Hi-Power muffler assembly
• Stainless steel exhaust piping
• 96mm diameter muffler tip
• Mounting hardware as required for installation

Ideal For:

This exhaust system is ideal for Toyota GR Corolla owners seeking a reliable, performance-oriented upgrade that enhances power delivery and exhaust sound without compromising daily drivability. It suits enthusiasts who want a race-inspired exhaust design with proven durability and a perfect fit for classic Japanese sports cars.