The BOOST-R ReAKT, taking the hugely popular form of the Trace R and creating a rear light with twice the burn times with just a 10-gram increase in weight. New quarter turn locking bracket to ensure the BOOST R is safe and secure. ReAKT (Ambient Kinetic Technology) is the latest innovation automatically adapting the light to conditions, flaring up to 150 lumens under braking or entering brighter environments, with the addition of PELOTON mode allowing the BOOST to dim when the light from the rider behind is detected