When you purchase a Supersprint product you can be assured it is the highest quality available. All design is validated by extensive testing which includes hours of dyno testing on Supersprint's exclusive in-house Maha 4-wheel chassis dynamometer. This 2-piece system includes rear resonator AND rear muffler; bolts-on to stock catalytic converter; dual round 76mm polished tips

This item fits the following BMWs:
1989-1990 E34 BMW 525i