On the fourth deal of Christmas, PartsMarket gave to me four calipers.
There are two main types of calipers:
- Floating (or sliding)
Floating calipers move in and out relative to the rotor and have one or two pistons only. They are typically located on the inboard side of the rotor. This piston pushes the entire caliper when the brakes are being forced. This creates a friction caused by the brake pads on both sides of the rotor.
Fixed calipers, on the other hand, don’t move. They have pistons arranged on each side of the rotor. Fixed calipers are generally preferred of the two. This is mostly because of their superior performance. The catch? They tend to be more expensive.
Some high-performance fixed calipers have two or more pairs of pistons (or “pots”) arranged on each side of the rotor. Others have as many as six pairs total.