Fast, rugged and factory-built, the 2S LiPo-compatible ARRMA® SENTON™ 4X4 MEGA RTR comes ready to bash on any terrain. This version of the Short Course truck features new equipment that improves on the original’s already impressive performance and durability.
The SENTON™ 4X4 MEGA RTR Short Course truck is DESIGNED FAST, DESIGNED TOUGH — built for exciting bashing speeds and extreme, all-terrain durability. New features to enhance its unstoppable performance include a stronger chassis and retained hinge pin plates; steering with more clearance for stones; a castellated slipper pad and sliding gear mesh; and rubber shielded bearings throughout.
The Short Course truck now also includes the Spektrum™ SLT3™ transmitter and SLR300 receiver. The transmitter is ergonomically designed for long periods of fatigue-free driving and has a foam wheel for precise fingertip control plus an improved hand grip and trigger feel. New bashers will be able to set throttle limits at 50% or 75% until they are ready to use the full speed potential. The SLT3™ is compatible with Tactic® SLT™ receivers to run other RTR vehicles you may own, and includes a third channel to control optional features such as lights and winches on models that have them.
It retains the ingenious modular design perfected by ARRMA® engineers for easy component access and maintenance. The power module, with improved dirt management, consists of a MEGA 550 motor, motor plate, slipper clutch assembly and gear cover. The power module can be detached from the chassis as a complete unit by removing just one screw. With the power module removed, the slipper clutch can be reached easily for adjustments by taking out three screws that attach the gear cover. The gear ratio can be finely tuned as the power module now uses a sliding motor mesh design.
A two-piece molding screwed to the truck’s chassis serves as its electronics module, containing a waterproof receiver box, servo mount and ESC tray. The SLR300 receiver mounts inside the receiver box for protection from dirt and moisture. The ultra-compact ESC is screwed to the top of the module, allowing quick access to the on/off switch, while the servo mounts to the side. All three components can be removed together, quickly and easily.
The differential module houses each differential unit in an innovative yoke design. Only eight screws need to be removed to release the front and rear yokes. The power module can then be detached, allowing you to pivot the gearbox cases for differential access. The SENTON™ 4X4 MEGA RTR comes brushless-ready with 37T 1.35mod diffs with silicone O-rings. The large gears can withstand huge torque, and internal metal gears have been chosen for reliability during extreme bashing.
Its full-time 4WD transmission uses strong front, rear, and centerline telescopic driveshafts that can’t be lost during heavy impacts, unlike dogbones. A simple, dependable, responsive steering assembly complements the ultra-reliable drive system and features a servo horn with built-in servo saver. The SENTON™ 4X4 MEGA RTR includes the waterproof Spektrum™ SPMS650 digital servo for 20% more torque than the previous version’s ADS-5 servo.
The self-bleeding, oil-filled shocks, now with silicone O-rings, use a tried and tested, coil-over design for simple maintenance and amazing handling. Their innovative rod-end has a molded-in spring perch for extra toughness. High chassis guards limit the amount of dirt and debris that can get into the chassis tub. Side impact nerf bars further protect the chassis and body shell. Shock-absorbing loops keep the front and rear bumpers secured to the chassis, offering defense against heavy impacts.
Tough, multi-spoke black SC wheels with vented dBoots® Fortress™ SC tires give the SENTON™ 4X4 MEGA RTR effective traction for bashing on almost any terrain. Multiple battery types can be used with the hook-and-loop mounting, from 6-cell NiMH packs to a 2S block pack. This version comes with a Dynamite® 3300 mAh 8.4V 7-cell Speedpack® 2 Hump NiMH battery that provides 35% more run time compared to the 2400mAh pack of its predecessor.
- (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) Product Manual
- (4) AA Batteries
Ball Bearings: Transmission
- 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
- 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
Body: Painted, decalled and trimmed
Chassis: Molded Composite
Completion Level: Ready-To-Run
Differential: 2 Gear Diffs
Final Drive Ratio: 15.26
Front Track: 11.73 in (298mm)
Power Type: Electric
Gear Pitch: 48-pitch
Ground Clearance: 1.26 in (32mm)
Internal Gear Ratio: 2.85
Motor Type: Brushed
Product Height: 8.27" (210 mm)
Product Length: 21.97" (558 mm)
Product Weight: 6.49lbs (2944g)
Product Width: 12.01" (305 mm)
Rear Track: 11.73 in (298mm)
Shock Type: Oil-Filled, Coil-Over Springs
Speed Control: Included
Spur Gear: 91T
Vehicle Type: Short Course Truck
Wheelbase: 12.87 in (327mm)
Product VideosSpektrum™ 3-Channel SLT3™ 2.4GHz radio and SLR300 Waterproof* Receiver:
Fast response SLT™ protocol
Improved grip and trigger feel
Improved wheel and trigger force
2-way thumb switch third channel
50% and 75% Throttle mode (for beginners)
Tactic® SLT™ receiver compatible
Dynamite® 3300mAh 8.4V 7-Cell Speedpack® 2 Hump NiMH Battery:
35% more run time over the 2400mAh pack in the previous version
7 cell NiMH Hump Pack
Factory-fitted IC3® Connector (EC3 Compatible)
dBoots® Fortress™ SC tires:
Tough, multi-spoke black SC wheels with vented dBoots® Fortress™ SC tires give the SENTON™ 4X4 MEGA RTR effective traction for bashing on almost any terrain.
Large gears can withstand huge torque, and internal metal gears have been chosen for reliability during extreme bashing.
Easy-access front and rear diff module removal.
Part Number ARA4203V3T1 Scale 1/10 Drivetrain 4WD Kit Type RTR Ball Bearings Transmission Battery Included Body Painted, decalled and trimmed Charger Included Chassis Molded Composite Completion Level Ready-To-Run Differential 2 Gear Diffs Drivetrain 4WD Final Drive Ratio 15.26 Front Track 11.73 in (298mm) Power Type Electric Gear Pitch 48-pitch Ground Clearance 1.26 in (32mm) Internal Gear Ratio 2.85 Motor Type Brushed Pinion 17T Product Height 8.27" (210 mm) Product Length 21.97" (558 mm) Product Weight 6.49lbs (2944g) Product Width 12.01" (305 mm) Radio Included Rear Track 11.73 in (298mm) Receiver Included Scale 1/10 Servos Included Shock Type Oil-Filled, Coil-Over Springs Speed Control Included Spur Gear 91T Suspension Independent Vehicle Type Short Course Truck Water-Resistant Yes Wheelbase 12.87 in (327mm)
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