The ABS tone ring, also known as a reluctor ring or speed sensor ring, is a crucial component for the Anti-lock Braking System (ABS). It is typically mounted on the wheel hub or CV joint and features a series of teeth or notches. As the wheel rotates, these teeth pass by the ABS speed sensor, allowing the sensor to generate a signal indicating the wheel's speed. This signal is vital for the ABS control module to monitor each wheel's rotation. If the module detects that a wheel is locking up during braking, it will rapidly pulse the brake pressure to that wheel, preventing skidding and maintaining steering control. A damaged or missing tone ring can lead to ABS warning lights illuminating on the dashboard and the deactivation of the ABS function, compromising braking safety. MAXGEAR's 27-0141 ABS tone ring is manufactured to meet or exceed original equipment specifications, ensuring reliable performance and a precise fit. Replacing a faulty tone ring with a quality part like this MAXGEAR component is essential for restoring the full functionality of your vehicle's ABS system.