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The faster, tougher design of the ARRMA SENTON 4X4 MEGA 550 Short Course Truck amplifies your racing thrills as only ARRMA can! The ARRMA design team has loaded this RC short track RC truck with every advantage a new driver could want — 1/10 scale realism, ready-to-run simplicity, and 30+ mph speed potential with full-time 4WD traction and power. Equipped out of the box with a 7C NiMH battery, this truck can also easily be upgraded with a 2S LiPo to take the speed, run time, and excitement to a whole new level.

  • MEGA 12T brushed 550 motor
  • MEGA waterproof ESC
  • IC3™ connectors (EC3™) compatible
  • 30MPH (48km/h) speed achievable in optimum driving conditions with optional gearing
  • Ready to Run (RTR) comes fully assembled with everything needed besides AA batteries!


In The Box

  • (1) ARRMA® SENTON™ 4X4 MEGA 550 1/10 Scale 4WD Short Course Truck RTR
  • (1) MEGA Waterproof* ESC
  • (1) MEGA 12T Brushed 550 Motor
  • (1) Spektrum™ Waterproof* SPMS650 Digital Servo
  • (1) Spektrum™ SLR300 Receiver
  • (1) Spektrum™ 2.4GHz SLT3™ 3-Channel Transmitter
  • (1) Dynamite® 3300mAh 8.4V 7-Cell Speedpack® 2 Hump NiMH Battery
  • (1) ADC-N7 7-Cell NiMH Wall Charger
  • (1) 1/10 SENTON 4WD V3 MEGA Manual


Needed to Complete

  • (4) AA Batteries



  • Stronger chassis and retained hinge pin plates
  • Steering with more clearance for stones
  • Castellated slipper pad and sliding gear mesh
  • 23T Spline servo saver
  • Brushless-ready 37T 1.35Mod diffs with silicone O-rings
  • Power Module with sliding gear mesh and improved dirt management
  • Rubber shielded bearings throughout
  • Oil-filled shocks with silicone O-rings
  • New body design, front and rear bumpers, paint and decals
  • New vented tires
  • MEGA 12T brushed 550 motor
  • MEGA waterproof* ESC

    * Note: For details on waterproof standards, refer to the instruction manual

  • IC3™ connectors (EC3™) compatible
  • Signature easy-access modular design
    • Easy-access power module
    • Easy-access electronics module
    • Easy-access diff module removal front and rear
  • Double wishbone suspension front and rear
  • Metal-geared differentials
  • Adjustable ride height
  • Adjustable body mounts
  • Extended height dirt defenders
  • Multi-terrain dBoots® Fortress™ SC tires
  • Tough multi-spoke black wheels
  • ADC-N7 7-cell NiMH wall charger
  • 2-year limited warranty (see website for details)
  • 30MPH (48km/h) speed achievable in optimum driving conditions with optional gearing



The best short course RC truck for first-time bashing through amplified all-road blasting is the ARRMA SENTON 4X4 MEGA 550 RTR. Though easy to drive, affordably priced, and ready-to-run — even a 7C NiMH battery and USB charger are included — its aggressive 1/10 scale styling hints at high-speed excitement that’s ahead. Speeds of 30+ mph are achievable under optimum conditions. From its full-time 4WD transmission to the large diff gears, every part of the ARRMA SENTON 4X4 MEGA 550 has been engineered by the ARRMA design team of RC enthusiasts to survive brutal blasting. The remote control short course truck’s smooth handling has you looking like a winner right off the starting line, and its wide wheelbase and vented tires let you put the hammer down on nearly any off-road or paved surface. An innovative modular chassis simplifies maintenance and repairs, cutting down time to the bone. The included Spektrum radio lets you limit top speeds to 50% or 75% of full throttle until you’re ready for it all, and its ergonomic grip fits your hand like a glove. ARRMA includes a high capacity NiMH battery. You can also upgrade easily to 2S LiPo power to take your RC 4x4 fun to the next level. Fully assembled and ready-to-run, the ARRMA SENTON 4X4 MEGA 550 Brushed RTR needs nothing more than four AA batteries before you’re ready to make your move!

ARA4203V3T1 RED SENTON 4X4 MEGA Brushed 1/10th 4wd SC Blue

SKU: 5052127038133
Out of Stock
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