HKS Sport Exhaust Civic Si (1988-1991) Subaru NOTE: Will not work with

NOTE: Will not work with factory bumper beam

before exiting the rear

which affects the camber setting in an negative way and can make the car handle unpredictably

compliant and designed specifically to fit your WRX or STI

HKS Sport Exhaust Civic Si (1988-1991) Subaru NOTE: Will not work withThis HKS Sport Exhaust System for the 1988 1991 Honda Civic Si is designed to reduce back pressure and increase exhaust flow for greater peak power and a broader torque band. Each Sport Exhaust application utilizes a specific muffler design and shape along with the appropriate piping diameter to maintain low end torque while maximizing high end horsepower. Features: Piping Diameter: 50mm Tip Diameter: 60mm Tip Style: R 2