3-piece muffler ID reducer sleeve set

3-piece slip-fit sleeves are used to reduce the inner muffler diameter from 1-3/4inch (44.5mm) to 1-1/2inch (38.1mm) in 3 steps. This will enable installation of regular 1-3/4inch diameter mufflers for instance onto 1-1/2inch head pipes. Comes with 3 different sleeve thicknesses allowing you to find the best possible fit.