Exhaust Muffler for Nissan 240SX Silvia S14 (1995-1998) 2.4L Engine

High-Flow T-304 Stainless Steel Exhaust for 1995-1998 Nissan 240SX (KA24DE/S14)

What it Does: Replaces the restrictive factory exhaust piping with a 2.5-inch mandrel-bent T-304 stainless steel system to optimize exhaust gas scavenging and reduce backpressure on the KA24DE engine.

The Stock 240SX Exhaust Restriction

The factory exhaust system on the S14 chassis was engineered primarily for decibel suppression and cost-effective mass production. Utilizing narrow-diameter mild steel piping with restrictive press-bends, the OEM setup creates significant turbulence and backpressure that chokes the KA24DE’s ability to breathe at higher RPMs. Furthermore, the stock mild steel construction is highly susceptible to internal corrosion and flange degradation over time, particularly under the high thermal loads seen in spirited driving or drifting. This results in diminished throttle response and a muffled, uninspiring exhaust note that fails to reflect the vehicle's performance pedigree.

The Engineering Solution

This performance exhaust kit utilizes high-grade T-304 stainless steel, providing superior resistance to oxidation and thermal fatigue compared to aluminized or mild steel alternatives. The system features computerized mandrel-bent 2.5-inch inlet piping, which maintains a constant diameter through every curve to ensure smooth, laminar airflow. By eliminating the 'crush' points found in stock piping, this design maximizes exhaust velocity and scavenging efficiency. The 4.5-inch burnt-tip muffler offers a deep, resonant tone while providing a high-flow exit for spent gases. As a direct bolt-on fitment, it utilizes the factory mounting points and a 2-bolt flange connection, requiring no welding or chassis modification for installation.

Technical Specifications

Compatibility

• 1995-1998 Nissan 240SX Base Coupe 2-Door 2.4L l4
• 1995-1998 Nissan 240SX SE Coupe 2-Door 2.4L l4
• 1997-1998 Nissan 240SX LE Coupe 2-Door 2.4L l4

The Nissan JDM Standard

Designed for the S-Chassis enthusiast, this system balances the durability required for daily street use with the flow characteristics needed for track environments. It delivers a significant improvement in mid-range torque and top-end power by allowing the 2.4L inline-four to operate without the parasitic loss associated with restrictive OEM baffling.