ST Series Cat-Back Exhaust System

The ISR Performance ST Series exhaust system is designed for Scion FRS, Subaru BRZ, Toyota GT86, and GR86 models. It features a dual-exit, dual-muffler design aimed at producing a deep, aggressive exhaust note across the entire power band, making it suitable for both naturally aspirated and forced induction setups. The exhaust system boasts a 3-inch diameter with dual mufflers, each capped by polished 4-inch tips. The muffler itself is finished in a brushed stainless steel for a clean aesthetic. The package includes all necessary components for installation, such as the mid-section, muffler sections, various gaskets (3-inch 2-bolt, 2.5-inch 2-bolt, and donut), bolts, nuts, springs, and hardware. Please note that this exhaust is legally intended for use only in competition vehicles that may never be registered, licensed, or used on public streets or highways. Its use is also permitted for other exempted vehicles.