ARRMA 1/10 SENTON 4x4 MEGA 550 Brushed SC, RTR Red/Blk

Tower Stock# LXLHKGRL  •  Manufacturer Stock# ARA102715T1
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Notes from our tech department:


Chassis: Molded plastic with side impact nerf bars, chassis can hold
batteries ranging from a 6-cell NiMH to a 4S LiPo pack 6.50
(165mm) long, and 2 (51mm) wide
Drive: Four wheel with telescopic sliding composite driveshafts,
spring loaded center driveshaft ensures solid engagement with
front and rear gearbox inputs
Differentials: Composite case construction, 1M straight cut internal
gears eliminate shimming or meshing issues, diffs are lubricated
with grease, viscosity not specified by manufacturer
Suspension: Captured hinge pin type
Radio: 2.4GHz Spektrum STX2 with 2-channel SRX200 waterproof receiver
Steering Servo: ADS-5, waterproof case, 70ozin (5kg-cm) of torque,
25T spline
Motor: Brush equipped, ARRMA MEGA 12T 550 size
Electronic Speed Control: ARRMA MEGA, compatible with 550 size motors
down to 12 turns, handles 5-9 cell NiMH, or 2S LiPo (7.4V) LiPo
batteries, IC3 battery connector
Shocks: Composite body, coil over, with keyed spring perch and
self bleed design, filled with 500cst silicone shock oil,
equivalent to around 40wt shock oil from other manufacturers
Shock Mounts: Molded plastic
Bumpers: Molded composite flexible plastic with shock absorbing
loops that attach bumpers to front and rear of chassis
Steering: Ball raced steering with fixed molded upper links, servo
Battery: 8.4V 2400mAh 7-cell NiMH wIC3 Connector (EC3 Compatible)
secured in chassis with two hook and loop straps
Battery Charger: ADC-N7 7-cell wall charger
Battery Tray: 6.5x2.01x1.89 (165x51x48mm) maximum battery dimensions
Body: Trimmed and printed
Wheels: Nylon construction, five spoke style, black in color, 14mm
hex, mounting bead: 2.2 (56mm) outer x 3.0 (76mm) inner
Tires: dBoots Fortress multi-surface with foam inserts 1.7 (42mm)
wide, 4.3 (110mm) overall diameter
Caster: Non-adjustable castertoe-in refers to the angle of the front
suspension when viewed from the side of the car in relation to the
Camber: Non-Adjustable, camber refers to the angle of the tops of the
tires from vertical when viewed from front or behind vehicle
Spur Gear: 48dp pitch 91 tooth, plastic construction
Pinion Gear: 48dp pitch 17 tooth, metal construction
Warranty: Two year limited warranty beginning at date of purchase


Assembled ARRMA RTR Senton MEGA 4x4 Short Course Truck
MEGA 12T 550 Brushed Motor
Spektrum 2.4GHZ STX2 Transmitter wSRX200 Receiver
2400mAh 8.4 7-cell NiMH Battery wIC3 Connector (EC3 Compatible)
Wall Charger
Painted Body, Instruction Manual


AA Batteries: Four for transmitter
Track and maintenance equipment


Length: 22 (558mm)
Width: 11.7 (298mm)
Height: 8.2 (208mm)
Weight: 6.6lbs (2.88kg) including battery
Ground Clearance: 1.26 (32mm)
Standard Final Gear Ratio Range: 9.71 - 18.72
Front Shock Spring Rate: 82gfmm
Rear Shock Spring Rate: 62gfmm
Battery Dimensions: 5.5 x 2 x 1.9 (140 x 51 x 48mm)
with battery mounting blocks in place
Max Battery Dimensions: 6.50 x 2 x 1.9 (165 x 51 x 48mm)
with battery mounting blocks removed
Differential Crown Gear Specification: 49T 1M
Differential Pinion Gear Specification: 17T 1M
Internal Gear Ratio: 2.88
Length: 20.7 (527mm)
Width: 9.8 (250mm) behind front wheels, narrowest point
11.6 (296mm) at rear wheels, widest point
Height: 5.8 (147mm)


Available in the following color schemes
Blue and Black, ARAD22BL
Red and Black, ARAD22RL

For replacement ball bearings use:
Qty. Size Location Qty. Stock numbers to order
2 12x18x4mm Steering Blocks 1 bearings can be found
2 6x12x4mm Steering Blocks 1 in the Optional Parts &
2 12x18x4mm Rear Hubs 1 Accessories section
2 6x12x4mm Rear Hubs 1
2 10x15x4mm Slipper Clutch 1
2 12x18x4mm Fr Diff 1
2 10x15x4mm Fr Diff 1
2 12x18x4mm Rear Diff 1
2 10x15x4mm Rear Diff 1


If powering the vehicle with a 2S LiPo battery, the jumper on the
ESC MUST be set to LiPo mode.
Face the side of the ESC with the Battery Mode Indication Sticker
Place the jumper across the center and left pins when viewing this

*Some aftermarket batteries may require the removal of the Battery
Mounting Block for proper fit. This can be accomplished by
removing the 3x12mm screw that threads through the chassis and
mounting block.

jxs 082019



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