Abstract: A quick-release axle system for in-line skates employing a disc-braking system providing easy removal of the braking wheel and brake system components for replacement or servicing. Two outer axles located on each side of a wheel provide support and activating means for the components of a disc-braking system. A central axle passing through the outer axles supports the braking wheel, allowing the wheel to rotate freely. Wheel removal is performed by removing the central axle from the outer axles, thus freeing the wheel. The outer axles, carrying components of the disc-braking device, remain attached to the skate frame. Removal of a retainer located on each of the outer axles, allows easy removal of the components of the disc-braking device attached thereto.