Product Detail Integrated dual battery compartments with quick release battery doors Scalable battery compartments from sport packs to brutal 6S Lipo power Dual digital waterproof steering servos deliver 125oz-in of torque & 0.16-sec transit time Hard-anodized Teflon-coated shock bodies with TiN coated shock shafts TQ 2.4Ghz DSS radio system . The "E-Revo Brushless RTR with Castle Mamba & 2.4 Radio" is best product for you. We recommended E-Revo Brushless RTR with Castle Mamba & 2.4 Radio