HKS GR Supra B58 Super Turbo Muffler

Overview

Revamp your Toyota GR Supra B58 with the HKS Super Turbo Muffler — a high‑quality cat‑back exhaust engineered for better exhaust flow, a sportier sound, and everyday drivability.

Whether you’re after a more engaging exhaust tone, improved throttle response, or a performance upgrade that still respects everyday usability and legal requirements, this HKS exhaust delivers a well‑rounded package that fits right into the spirit of the Toyota GR Supra.

Engineered for Performance & Daily Use

The Super Turbo Muffler is crafted from premium SUS304L stainless steel for durability and corrosion resistance, giving you a long‑lasting performance upgrade without sacrificing reliability. Its dual 80–70mm center piping and 110mm dual exhaust tips deliver optimized flow and an aggressive exhaust note that’s louder and richer than stock without going overboard.

Balanced Sporty Sound

With a measured noise level of approximately 87dB (compared to stock 85dB), this muffler produces a deeper, engaging tone — perfect for spirited driving while still being manageable for daily commutes.

Direct Fit & Easy Installation

This exhaust system is a direct‑fit cat‑back that connects right to the OEM mid‑pipe. Installation simply involves cutting the stock muffler at the mid‑pipe service point.

Key Specs

• Material: SUS304L stainless steel

• Tip Diameter: 110mm (left & right)

• Center Pipe: 80–70mm x 2

• Noise Level: 87 dB (HKS) vs ~85 dB (stock)

• Road Clearance: 125mm

• Weight: 23.9kg

Note: Unconfirmed fitment regarding Final Edition Models due to FE Brace