Gyro Rotors & Cables
The detangler or rotor is an invention for the Freestyle BMX bicycle, allowing the handlebars to turn a complete 360° rotation without the brake cables getting tangled up. It is commonly called the Gyro. A detangler is usually only used for the rear brake. The front brake cable can be routed through the stem, via a hollow stem bolt known as a Pott's mod bolt, and fork steer tube to avoid the tangling problem.
!