HKS Hi-Power Muffler SPEC-L Dual Exit Catback Exhaust System - 2022+ Toyota GR86 / Subaru BRZ

Looking to add a refined, sporty exhaust note to your GR86 or BRZ? The HKS Hi-Power Muffler SPEC-L Dual Exit Catback Exhaust System delivers signature HKS sound, reduced weight, and improved exhaust performance while maintaining a clean dual-exit layout that suits the factory rear bumper perfectly.

HKS is known for building exhaust systems that balance sound quality, performance, and fitment. The SPEC-L uses ultra-thin stainless steel for both the piping and silencers, allowing the system to achieve a weight level competitive with titanium exhausts while retaining the durability and refinement of stainless construction.

HKS Power Graph

Key Features

• Lightweight Stainless Construction: Ultra-thin stainless steel piping and silencers help reduce weight to a level competitive with titanium systems.
• Dual Exit Layout: Maintains a clean, balanced rear appearance that fits the GR86 and BRZ body lines naturally.
• Sporty HKS Sound: Emphasizes a deeper bass tone while retaining a refined and pleasant exhaust note.
• Reduced Drone: Silent chamber design helps eliminate annoying cabin drone during normal driving.
• Equal-Length Design: Unique equal-length shape on each side helps produce a clear, balanced exhaust sound.
• FA24-Specific Pipe Sizing: Pipe diameter is selected to match the higher-output 2.4L engine for strong exhaust performance.
• Improved Driving Feel: Reduced weight and exhaust pressure help improve response and overall driving performance.
• Optional Tip Customization: Compatible with optional tail tip covers in titanium, carbon, and blue stainless steel finishes.
• Louder HKS SPEC-L Option: 32016-BT004 is louder than 32016-AF101 for drivers who want a more pronounced exhaust note.

Why We Like It

This is a great exhaust for drivers who want more personality from their GR86 or BRZ without going to an overly raw or harsh setup. The SPEC-L gives you a sporty tone, reduced weight, and a premium HKS design while keeping the dual-exit look that fits the car so well.

Sound Level

• Advertised Sound Level: 89dB
• Idle Sound Level: 66dB
• Sound Note: 32016-BT004 is louder than 32016-AF101

Specifications

• Brand: HKS
• Product: Hi-Power Muffler SPEC-L Dual Exit Catback Exhaust System
• Chassis: ZN8 / ZD8
• Engine: FA24
• Material: Ultra-thin stainless steel
• Layout: Dual exit
• Advertised Sound Level: 89dB
• Idle Sound Level: 66dB
• Part Number Reference: 32016-BT004

Installation Notes

• Designed as a direct-fit catback exhaust system for compatible GR86 and BRZ applications.
• Professional installation is recommended for best fitment and alignment.
• Adjust exhaust tip alignment before final tightening.
• Re-check all hardware after the first heat cycle.

What’s in the Box

• HKS Hi-Power Muffler SPEC-L dual exit catback exhaust system
• Required installation hardware and components per HKS kit contents

Compatibility & Disclaimers

Designed for 2022–2026 Toyota GR86 and Subaru BRZ applications. Exhaust sound, volume, and fitment may vary depending on headers, over pipe, front pipe, catalytic converter configuration, and other supporting modifications. Always verify local noise and emissions regulations before installation.