HKS LEGAMAX Premium VBH S4 Single Exit Axleback Exhaust System - 2022+ Subaru WRX

Looking to add a sporty exhaust note to your 2022–2026 Subaru WRX while cutting weight over the factory system? The HKS Hi-Power Muffler VBH Single Exit Catback Exhaust System delivers a more aggressive single-exit sound, improved exhaust flow, and reduced weight compared to the stock exhaust.

HKS is known for high-quality exhaust systems that balance performance, sound, and fitment. This Hi-Power Muffler setup gives the VB WRX a more purposeful tone, supports stronger flow through a higher-efficiency pipe layout, and helps improve torque in the 3,000–4,000 rpm range where street-driven WRXs spend a lot of time.

Key Features

• Single Exit Design: Gives the VB WRX a cleaner, more aggressive motorsport-inspired rear look.
• Adjustable 4.68" Rear Tip: Large single tip design allows for a bold rear-end appearance and alignment adjustment.
• Lightweight Construction: Weighs approximately 28.6 lbs compared to the factory exhaust at 47.8 lbs.
• Major Weight Savings: Drops roughly 19.2 lbs from the rear of the car compared to stock.
• Sporty HKS Sound: Delivers a more aggressive tone with inner silencer flexibility.
• Higher Flow Layout: Pipe layout and design help reduce restriction and improve exhaust efficiency.
• Torque Improvement: Designed to increase torque in the 3,000–4,000 rpm range.

Why We Like It

This is a great exhaust for VB WRX owners who want something lighter, louder, and more performance-focused than stock. The single-exit layout gives the car a more aggressive look, while the inner silencer gives you some flexibility depending on how much sound you want from the FA24.

Sound Levels

• With Inner Silencer: 88dB
• Idle With Inner Silencer: 68dB
• Without Inner Silencer: 100dB
• Idle Without Inner Silencer: 80dB

HKS Product Video Feature

Specifications

• Brand: HKS
• Product: Hi-Power Muffler VBH Single Exit Catback Exhaust System
• Chassis: VBH
• Engine: FA24
• Layout: Single exit
• Tip Size: 4.68"
• System Weight: 28.6 lbs / 13kg
• Factory Exhaust Weight: 47.8 lbs / 21.7kg
• Sound Level With Inner Silencer: 88dB
• Sound Level Without Inner Silencer: 100dB

Installation Notes

• Designed as a catback exhaust system for compatible VB WRX applications.
• Adjust the rear tip position before final tightening.
• Re-check all hardware after the first heat cycle.
• Sound level will vary depending on inner silencer use and supporting modifications.

What’s in the Box

• HKS Hi-Power Muffler VBH single exit catback exhaust system
• Inner silencer
• Required installation hardware and components per HKS kit contents

Compatibility & Disclaimers

Designed for 2022–2026 Subaru WRX applications. Exhaust sound, volume, and fitment may vary depending on downpipe/j-pipe, tuning, and other supporting modifications. Always verify local noise and emissions regulations before installation.