ST2 Brake Module - Smart Brake Light, Brake Light Modulator, SBM
Oct 21, 2021· ST2 Brake Module flashes your brake light when engine braking and down-shifting to warn drivers behind you. Proprietary & road tested state-of-the art algorithm. Compatible with all Motorcycles and brake lights (LED or incandescent) Two modes - Flashing or Steady when deceleration is detected.