hat do you use to reset your pistons in your disc brakes? Big screwdriver, maybe a thin cone spanner or even a wood chisel, which was recommended by a member of ? These tools work, but you risk damaging the braking surface on your pads or, if you remove those, the pistons themselves. There are dedicated tools for this job on the market like the Park Tool PS-1 disc spreader, but they’re only a small step-up from a cone spanner and, if used incorrectly, can still put uneven leverage on the pistons. Birzman’s Disc Brake Piston Pusher is the next level because it’s an expandable spreader with two tabs that push on the pistons at the same time.
