The 3S Brushless BOOST Box is also compatible with all 4X4 MEGA vehicles. BOOST Models will require an SLT3 receiver for compatibility (such as Spektrum SLR300). Not compatible with stock NiMH Battery (SPMX33007C3H) and IC3 Connector. ARRMA 3S Brushless BOOST Box, ARA210005. Ready for the next level of ARRMA RC bashing performance? The ARRMA 3S […]