HKS 32018-AH030 Legamax Premium Cat-Back Exhaust System

The HKS 32018-AH030 Legamax Premium is a performance cat-back exhaust system engineered to reduce exhaust backpressure and maximize flow for improved peak power and a broader torque curve. HKS engineers each Legamax application with a specific muffler design, shape, and piping diameter selected to preserve low-end torque while unlocking high-RPM horsepower gains.

Constructed from polished SUS304 stainless steel, the Legamax Premium is built to last and features a refined aesthetic to complement the vehicle's rear styling. The system uses an OT-1 style dual oval tip design with 95mm oval outlets (left and right) for an aggressive, premium look. Piping transitions from 60mm to 50mm dual pipes to optimize exhaust velocity throughout the RPM range.

Key Features:

• Muffler style: Legamax Premium (OT-1)
• Primary material: SUS304 polished stainless steel
• Tip O.D.: 95mm Oval — Dual Left & Right
• Pipe size: 60mm to 50mm dual
• System consists of 3 pieces
• HKS close sound level: 83 dB
• HKS idling sound level: 54 dB
• Compatible engine: K24W
• UPC: 4957266919293

The Legamax Premium delivers a refined, sporty exhaust note — noticeably more aggressive than stock at idle and under load — without the harshness or interior drone of a race-focused system. It is designed as a direct-fit replacement, maintaining all stock emissions equipment. Note: Not compatible with 4WD variants.