# Brake caliper

> A brake caliper uses hydraulic pressure to move its pistons and press the brake pads onto the disc.

- **Also known as:** Fren kaliperi, Fren çenesi, Caliper
- **Turkish term:** Kaliper
- **Category:** [Master Cylinders & Calipers](https://motorsikletparcasi.com/en/category/master-cylinders-and-calipers)
- **Page:** https://motorsikletparcasi.com/en/glossary/brake-caliper

There are two main designs: a **floating (sliding) caliper** has piston(s) on one side and the body slides on pins; a **fixed (opposed-piston) caliper** has pistons on both sides of the disc (2, 4 or 6 pistons). Radially mounted calipers are common on sports bikes.

## Maintenance and symptoms

- Uneven or tapered pad wear – a sticking piston or slide pin
- Dragging after releasing the brake, an overheating disc
- Fluid leaks – renew the piston seals (caliper rebuild kit)

After removing or refitting a caliper, bleed the system and check the [brake fluid](https://motorsikletparcasi.com/en/glossary/brake-fluid).

## Related terms

- [Brake pad](https://motorsikletparcasi.com/en/glossary/brake-pad): A brake pad is the friction-lined part that the caliper pistons press against the brake disc to slow the motorcycle.
- [Brake disc](https://motorsikletparcasi.com/en/glossary/brake-disc): The brake disc is the steel rotor fixed to the wheel that the brake pads clamp to slow the motorcycle.
- [Brake master cylinder](https://motorsikletparcasi.com/en/glossary/brake-master-cylinder): The brake master cylinder converts force on the brake lever or pedal into hydraulic pressure and sends it to the caliper.
- [Brake fluid](https://motorsikletparcasi.com/en/glossary/brake-fluid): Brake fluid is the high-boiling-point fluid that carries pressure from the master cylinder to the caliper.

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- Source page: https://motorsikletparcasi.com/en/glossary/brake-caliper
- Last updated: 2026-10-09
- Türkçe sürüm: https://motorsikletparcasi.com/sozluk/kaliper.md
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