ISR Performance EP (Straight Pipes) Dual Tip Exhaust - Nissan 240sx 89-94 (S13) - 3" This is a Race type Straight pipe exhaust system. Straight 3" diameter piping splits to dual 3" tips. This exhaust has no resonator or mufflers. It is an awesome sounding straight pipe exhaust. New Brushed Finish with Polished Tips. What’s in the box: 1x front pipe 1x 3'' Muffler section with dual 3" Tips 2x 2 Bolt 3" Exhaust gasket 4x Bolts 4x Nuts ** All ISR Performance Products are Designed for Off Road Use Only **