Invidia [15-21 WRX/STI] Q300 Cat Back Exhaust w/ Double Wall Stainless Steel Tips | HS15STIG3S ship-25 Each strut features a mono-tube

Each strut features a mono-tube shock design with 32 levels of rebound damping

Invidia has released their catted and non-catted performance 3-inch downpipes for the Evo X

Modification required for A/C and power steering

Pronounced exhaust note throughout the entire RPM band

seal tight

Invidia [15-21 WRX/STI] Q300 Cat Back Exhaust w/ Double Wall Stainless Steel Tips | HS15STIG3S ship-25 Each strut features a mono-tubeFor a good balance of price and performance, Invidia Exhaust is constructed with high quality SUS304 stainless steel, CNC machined flanges, and manufactured with a polished finish. Each system features mandrel bent stainless steel piping for maximum exhaust flow and reduced back pressure. These exhausts are engineered to produce strong mid to top end power gains, as well as an increase in horsepower and torque. Specs: Tip Size: 110mm Piping ID: 76mm