We often hear about the floating brake disc in motorcycles, but not everyone really knows what this term means or what its purpose is.
We are all used to seeing standard brake discs — those made in a single piece and fixed directly to the wheel. However, for several years now, more eye-catching designs have appeared on the market, featuring a fixed central section shaped like a spider and an outer floating section, which is the actual braking surface.
This assembly is precisely what is known as a floating brake disc. It consists of two clearly defined parts:
- The carrier (or spider), which is the central part bolted directly to the wheel rim.
- The outer braking track, which is connected to the carrier through special rings or washers.
This particular design allows a small amount of lateral and axial movement, helping the disc adapt perfectly to the brake pads. It absorbs the tolerances designed into the system, resulting in safer braking and a more even wear pattern on the pads.
The braking action works differently depending on whether the caliper is floating or fixed:
- Floating caliper: the piston pushes the pad against the disc, and the reaction force moves the caliper so that the opposite pad also comes into contact.
- Fixed caliper: pistons on both sides of the disc move simultaneously, pressing both pads evenly against the braking surface.
The floating brake disc helps ensure that the pads make equal contact on both sides. This provides several advantages: improved braking response, greater system ventilation, and more consistent performance.
In terms of maintenance and installation, a floating disc should not create more difficulties than a fixed disc, as long as it is handled by qualified professionals.
Beyond its technical benefits, floating discs are also visually striking, often available in different colors, finishes, and combinations that add character to the motorcycle.
At NG Brakes we offer all types of brake discs adapted to every need. Check our catalogue here.
