Different colors may be mixed for a more realistic look

Designed for ARRMA BIG ROCK 223S V4 vehicles

The compact stacked configuration is designed to fit compatible drag-racing chassis that can accommodate its specific dimensions and weight

while the included soft and stiff spring options allow you to adjust the suspension setup based on vehicle weight

Wire stand is included

Traxxas 3445 Velineon VXL-4s Speed Control F8E Parts Different colors may be mixedVelineon VXL 4s electronic speed control, waterproof, brushless, with forward, reverse and brake. The VXL 4s is the 4 cell capable controller that makes the Jato 4X4's performance possible it handles the current a 4s pack delivers into the 540XL motor without the thermal shutdowns a lower rated ESC would hit. Waterproof construction means wet grass and puddles are not a risk. Worth replacing rather than repairing if an ESC has been run hard and