How to look at the number of pistons in the brake caliper, and how to distinguish the number of pistons in the caliper

The brake piston, as the component that exerts force on the brake disc, is of course very important. Most ordinary family cars use single pistons, usually located on the rear side of the brake discs, so from the outside we can only see the calipers and the brake pads fixed on the calipers. Of course, there are many high-performance cars that use multi-piston calipers, which have very good braking effects. So how do you look at the number of pistons in the brake caliper, and how do you distinguish the number of pistons in the caliper?

The number of brake pistons is still very easy to distinguish, which can be distinguished from the appearance. There will be several round bumps on the caliper, and the bumps are what we call pistons. Then the pistons of the caliper are symmetrical on both sides, which can increase the braking force while also distributing the braking force evenly. So when we count the pistons, we only need to count one side (symmetrical), and the number of protrusions multiplied by two is the total number of pistons.

It is worth mentioning that some calipers have multiple pistons with different sizes. Take our most common six-piston calipers as an example. Some manufacturers design the six pistons to be the same size, while others use the "large, medium, and small" arrangement, some have the "large, small, and medium" arrangement, and some have the "small, large, and small" arrangement. Not only the braking force and the wear of the brake pads are more even, but the braking effect is more linear, which brings greater braking force while reducing the abruptness of the braking process.