ARRMA 1/10 GRANITE 4x4 MEGA 550 Brushed MT RTR

Tower Stock# LXLHKF**  •  Manufacturer Stock# ARA102714
Only manufacturer discounts can be applied to this product's purchase. Tower coupon codes may not be applied.
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Notes from our tech department:


Chassis: Molded plastic, can hold batteries ranging from a 6-cell
NiMH to a 2S LiPo pack 6.14 (156mm) 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: Full metal straight cut internal gears eliminate
shimming or meshing issues
Suspension: Double wishbone front and rear
Radio: 2.4GHz Spektrum STX2
Steering Servo: ADS-5 waterproof case, 70ozin (5kg-cm) of torque,
25T spline
Motor: ARRMA MEGA Brush equipped, 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, filled with 500cst silicone shock
oil, equivalent to around 40wt shock oil from other manufacturers
Shock Mounts: Molded plastic
Steering: Ball raced steering with fixed molded upper links, servo
Battery: 7-cell 8.4V 2400mAh NiMH wIC3 Connector (EC3 Compatible)
Battery Charger: ADC-N7 7-cell NiMH wall type
Pinion Gear: 14 tooth 48 pitch metal
Spur Gear: 91 tooth plastic
Body: Trimmed and printed
Wheels: Multi spoke nylon construction, black in color, 14mm hex
Tires: All terrain dBoots Fortress MT with memory foam inserts
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
Warranty: Two year limited warranty beginning at date of purchase


Assembled RTR ARRMA Granite MEGA 4x4 Monster 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


Length: 16.9 (429mm)
Width: 13.5 (342mm)
Height: 7.7 (196mm)
Weight: 6.5lbs (2.9kg)
Wheelbase: 11.3 (287mm)
Ride Height: 1.85 (47mm)
Max Battery Dimensions: 6.14 x 2.01 x 1.89 (156 x 51 x 48mm)
with battery mounting block removed*
Front Shock Spring Rate: 0.8Nmm
Rear Shock Spring Rate: 0.6Nmm
Differential Crown Gear Specification: 49T 1M
Differential Pinion Gear Specification: 17T 1M

Length: 15.7 (400mm)
Width: 6.4 (163mm) at rear wheels, widest point
Height: 4.3 (109mm)
Tires and Wheels
Wheel Bead Diameter: 2.8 (72mm)
Overall Diameter: 5.0 (128mm)
Width: 2.1 (53mm)
Hex Size: 14mm


Available in the following color schemes
Green and Black, ARAD21GL
Red and Black, ARAD21RL

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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