• ARRMA'S BIGGEST RELEASE OF 2023...
    ARA2102T1 - GRANITE GROM (Blue)
  • ...IS ALSO ITS SMALLEST
    the all new GRANITE GROM; genuine ARRMA toughness for
    anyone, anytime, anywhere - now available in small scale!
    ARA2102T3 - GRANITE GROM (Green)
    ARA4202V3T2 - 1/10 GRANITE MEGA 550 (Red) pictured for scale
  • Width: 8"/204mm
    Width: 13.46"/342mm
  • ARA2102T3 - GRANITE GROM (Green)
  • PRECISION MOLDED
    rugged composite chassis
    for go-anywhere toughness
  • CLIPLESS BODY
    FITTING
    (PATENT APPLIED)
    removal & re-installation
    of the GRANITE GROM
    body is easy and secure
    without the need for
    body clips or tools
  • SHAFT DRIVEN
    4wd drivetrain for maximum traction
  • FULL METAL GEARS
    all-metal drivetrain and servo for maximum durability
  • FULL HEX HARDWARE
    hobby grade ease, reliability & quality
    VS
    INCLUDED HEX HEAD
    COMPETITOR CROSS HEAD
    GRANITE GROM includes combined 2mm driver & wheel wrench
  • ARA2102T3 - GRANITE GROM (Green)

The GRANITE GROM: Small & skilful

Feel the power

  • SPEKTRUM 2in1
    ESC/RECEIVER
    for smooth, proportional control &
    waterproof, go-anywhere performance
  • SLT2 TRANSMITTER
    50% & 75% THROTTLE LIMITER
    easily match speed to your skills
    MAXIMUM COMFORT
    ergonomic handle and foam wheel grip
    EASY DRIVING
    adjustable steering rate
  • ANODIZED ALUMINUM
    HEATSINK
    keep cool, look cooler
  • SPEKTRUM SX110 SERVO
    powerful, fast & full metal gears
    for go-anywhere durability
  • TORQUEY 28T MOTOR
    to tackle any surface
    compact 380 size to fit the
    GRANITE GROM perfectly
  • ALL THE POWER
    Spektrum SMART battery & charger included
  • SPEKTRUM 7.4V SMART LiPo BATTERY
    • 1400mAh capacity for long run times

    • Charge in an hour or less using the included USB charger

    • Spektrum SMART technology makes charging and maintaining batteries easy

    • Automatic charging when paired with a Spektrum SMART Charger - ensures safe and accurate charge parameters

    • Hard case for additional protection

    • Internal battery temperature monitor helps guarantee safe charging and discharging

    • Integrated microchip stores unique parameters for each battery

    • IC2 Connector
  • SPEKTRUM S10 2S USB-C SMART CHARGER
    • Easily charge compatible SMART batteries from any compatible USB power source

    • Automatically detects SMART battery information and begins charging when connected

    • 1.5A fast charge for typical charge time of 1 hour

    • Auto charge cut-off for safe operation

    • Compatible with 2 cell Spektrum SMART LiPo Batteries

    • Recommended to be used with USB Power adaptor with QC 2.0 / 3.0 18W+ (not included)

Small in scale: big on features

  • ARA2102T3 - GRANITE GROM (Green)
  • TOUGH TIRES
    dBoots FORTRESS vented tires provide
    ultimate traction and durability
    M4 AXLES & WHEEL NUTS
    25% bigger than traditional small scale
    vehicles for more secure wheel fitting
    12MM HEX
    allows a wide range of
    wheel & tire options
  • OIL-FILLED
    telescopic shock absorbers allow the
    GRANITE GROM to soak-up any terrain
  • DESIGNED FOR USE
    diff removal in just six
    screws for easy access
  • GRAB A GRANITE
    available in three unique color
    schemes - choose your favorite
    or collect them all
    Models pictured:
    ARA2102T1 - GRANITE GROM (Blue)
    ARA2102T2 - GRANITE GROM (Red)
    ARA2102T3 - GRANITE GROM (Green)
  • EASY ACCESS
    top deck removal with just nine screws
    for simple cleaning and maintenance
  • SMALL SCALE
    compared to the 1/10 scale GRANITE the
    GRANITE GROM is nearly half the size!
    ARA2102T3 - GRANITE GROM (Green)

Under the Hood

  • ARA2102T1 - GRANITE GROM (Blue)
    KEEP IT CLEAN
    clipless body mount features
    integrated dirt deflectors behind
    front wheels to keep out the
    worst of the elements
  • IMPACT ABSORBING
    bumpers & bumper loops help GRANITE GROM
    soak-up the rough & tumble of hard bashing
  • SECURE
    battery mounting for
    the roughest terrains
  • INTEGRATED CABLE
    MANAGEMENT
    holds wires safely
    tucked away & keeps the
    GRANITE GROM looking neat & tidy
  • RUBBER
    SHIELDED
    BEARINGS
    unlike other small
    scales GRANITE
    GROM is equipped
    with a full set of
    ball bearings for
    extreme performance
  • INDEXED MOTOR MOUNT
    locks the motor securely into place while allowing easy
    gear ratio changes with perfect gear mesh every time
  • UNIVERSAL JOINT
    front driveshafts for smooth
    bind-free steering movement
  • GEARED DIFFERENTIALS
    allow the GRANITE GROM to lay down the power and hunt down the traction

Trick it up

  • OPTION PARTS
    want to trick your GRANITE GROM out
    even more? easy, here's how!
    ARA2102T1 - GRANITE GROM (Blue)
  • METAL AXLE & HEX SET
    ARA311198 Metal Axle & Hex Set
    for extreme durability
  • OIL FILLED DIFFERENTIALS
    easily tune for maximum traction
    supplied filled with 3000cSt silicone oil
    ARA311193 Assembled Oil Filled Differential Set (2pcs)
  • ALUMINUM SHOCK SET
    threaded collars for easy preload adjustment
    all hardware included for simple fitment
    ARA330824 Aluminum Shock Set
  • ADJUSTABLE STEERING LINKS
    for fast adjustment of toe-angle
    ARA340208 Adjustable Steering Links

ARRMA bashing for everyone, anytime, anywhere

  • ARA2102T2 - GRANITE GROM (Red)
  • Models pictured:
    ARA2102T1 - GRANITE GROM (Blue)
    ARA2102T2 - GRANITE GROM (Red)
    ARA2102T3 - GRANITE GROM (Green)
  • ARA2102T2 - GRANITE GROM (Red)
  • ARA2102T1 - GRANITE GROM (Blue)
  • ARA2102T1 - GRANITE GROM (Blue)
  • ARA2102T3 - GRANITE GROM (Green)
  • ARA2102T1 - GRANITE GROM (Blue)
  • ARA2102T2 - GRANITE GROM (Red)

Specifications

ARRMA Part Number
ARA2102T1
ARA2102T2
ARA2102T3
Vehicle Name
1/18 GRANITE GROM MEGA 380 RTR, Blue
1/18 GRANITE GROM MEGA 380 RTR, Red
1/18 GRANITE GROM MEGA 380 RTR, Green
SCALE
Small
Small
Small
MAX SPEED POSSIBLE
20+mph / 32+km/h
20+mph / 32+km/h
20+mph / 32+km/h
POWER TYPE
Brushed
Brushed
Brushed
BUILD STATUS
RTR
RTR
RTR
Saleable Part #
ARA2102T1
ARA2102T2
ARA2102T3
BUILD CONFIGURATION OPTIONS
Mid Motor
Mid Motor
Mid Motor
DRIVE TYPE
4WD
4WD
4WD
VEHICLE TYPE
Monster Truck
Monster Truck
Monster Truck
SURFACE
Off-road
Off-road
Off-road
LENGTH
250mm / 9.84"
250mm / 9.84"
250mm / 9.84"
WHEELBASE
165mm / 6.5"
165mm / 6.5"
165mm / 6.5"
RIDE HEIGHT
30mm / 1.18"
30mm / 1.18"
30mm / 1.18"
FRONT WIDTH
200mm / 7.87"
200mm / 7.87"
200mm / 7.87"
REAR WIDTH
200mm / 7.87"
200mm / 7.87"
200mm / 7.87"
HEIGHT
118mm / 4.65"
118mm / 4.65"
118mm / 4.65"
NUMBER OF DIFFERENTIALS
2
2
2
WEIGHT (INC. SUPPLIED BATTERY)
0.8kg / 1lbs 12oz
0.8kg / 1lbs 12oz
0.8kg / 1lbs 12oz
WARRANTY LEVEL
2 Year Limited
2 Year Limited
2 Year Limited
ARRMA Part Number
ARA2102T1
ARA2102T2
ARA2102T3
Vehicle Name
1/18 GRANITE GROM MEGA 380 RTR, Blue
1/18 GRANITE GROM MEGA 380 RTR, Red
1/18 GRANITE GROM MEGA 380 RTR, Green
BODY LENGTH
242mm / 9.53"
242mm / 9.53"
242mm / 9.53"
BODY WIDTH
92mm / 3.62"
92mm / 3.62"
92mm / 3.62"
BODY HEIGHT
65mm / 2.56"
65mm / 2.56"
65mm / 2.56"
FRONT SPRING RATE
0.68N/mm
0.68N/mm
0.68N/mm
REAR SPRING RATE
0.68N/mm
0.68N/mm
0.68N/mm
CAPTURED HINGEPINS
Yes
Yes
Yes
TURNBUCKLES/FIXED LINKS
Fixed Link
Fixed Link
Fixed Link
HARDWARE TYPE
Hex Head
Hex Head
Hex Head
LOCKING DIFFS
No
No
No
DIFFERENTIAL TYPE
Gear
Gear
Gear
STANDARD SHOCK OIL (Viscosity)
300cSt
300cSt
300cSt
STANDARD SHOCK OIL (Type)
Silicone
Silicone
Silicone
STANDARD DIFF OIL (Type)
Grease
Grease
Grease
DIFFERENTIAL CROWN GEAR SPECIFICIATION
30T 0.8Mod
30T 0.8Mod
30T 0.8Mod
DIFFERENTIAL PINION GEAR SPECIFICIATION
12T 0.8Mod
12T 0.8Mod
12T 0.8Mod
INTERNAL GEAR RATIO
2.5
2.5
2.5
INTERNAL GEAR MATERIAL
Metal
Metal
Metal
FITTED SPUR SIZE
59Tooth
59Tooth
59Tooth
FITTED SPUR MATERIAL
Metal
Metal
Metal
FITTED PINION GEAR SIZE
16Tooth
16Tooth
16Tooth
FITTED PINION MATERIAL
Metal
Metal
Metal
EXTRA SPEED PINION INCLUDED
No
No
No
PINION AND SPUR TOOTH PITCH
0.5Mod
0.5Mod
0.5Mod
STANDARD FINAL GEAR RATIO
9.22
9.22
9.22
TIRE STANDARD
Small Scale
Small Scale
Small Scale
TIRES INCLUDED
dBoots FORTRESS
dBoots FORTRESS
dBoots FORTRESS
TIRE DIAMETER
125mm / 4.92"
125mm / 4.92"
125mm / 4.92"
DRIVESHAFT TYPE
CVD Front/Dogbone Rear
CVD Front/Dogbone Rear
CVD Front/Dogbone Rear
WHEEL BEAD DIAMETER
47mm / 1.85"
47mm / 1.85"
47mm / 1.85"
WHEEL HEX SIZE
12mm
12mm
12mm
WHEEL COLOR/FINISH
Black
Black
Black
MOUNTED TIRES
Yes
Yes
Yes
TIRE ATTACHMENT METHOD
Glued
Glued
Glued
SERVO HORN MATERIAL
Plastic
Plastic
Plastic
SERVO SPLINE SIZE
20T
20T
20T
BATTERY MAX DIMENSIONS
101x31x21mm / 3.98x1.22x0.83"
101x31x21mm / 3.98x1.22x0.83"
101x31x21mm / 3.98x1.22x0.83"
CHASSIS MATERIAL
Moulded Composite
Moulded Composite
Moulded Composite
TRIMMED BODY
Yes
Yes
Yes
BODY-ON BATTERY ACCESS
No
No
No
BODY PIN RETAINERS
Clipless Mounting System
Clipless Mounting System
Clipless Mounting System
TORQUE SPLIT
50/50
50/50
50/50
MODEL PRODUCTION YEAR
2023
2023
2023
ARRMA Part Number
ARA2102T1
ARA2102T2
ARA2102T3
Vehicle Name
1/18 GRANITE GROM MEGA 380 RTR, Blue
1/18 GRANITE GROM MEGA 380 RTR, Red
1/18 GRANITE GROM MEGA 380 RTR, Green
POWER LEVEL
2S
2S
2S
RADIO SYSTEM
Spektrum SLT2 Tx/Spektrum 2625RX 2in1 Unit
Spektrum SLT2 Tx/Spektrum 2625RX 2in1 Unit
Spektrum SLT2 Tx/Spektrum 2625RX 2in1 Unit
2.4Ghz
Yes
Yes
Yes
NUMBER OF RADIO CHANNELS
2
2
2
ESC
Spektrum 2625RX 2in1 Unit
Spektrum 2625RX 2in1 Unit
Spektrum 2625RX 2in1 Unit
WATERPROOF ELECTRONICS
Yes
Yes
Yes
ESC CONNECTOR TYPE
IC2
IC2
IC2
MOTOR
Mega 380 28T
Mega 380 28T
Mega 380 28T
MAXIMUM MOTOR SIZE
380
380
380
SERVO
Spektrum SX110
Spektrum SX110
Spektrum SX110
SERVO GEAR MATERIAL
Metal
Metal
Metal
ARRMA Part Number
ARA2102T1
ARA2102T2
ARA2102T3
Vehicle Name
1/18 GRANITE GROM MEGA 380 RTR, Blue
1/18 GRANITE GROM MEGA 380 RTR, Red
1/18 GRANITE GROM MEGA 380 RTR, Green

Included

BATTERY INCLUDED
Yes
Yes
Yes
CHARGER TYPE SUPPLIED
Spektrum S10 2S USB-C Smart Charger
Spektrum S10 2S USB-C Smart Charger
Spektrum S10 2S USB-C Smart Charger
BATTERY CONNECTOR SUPPLIED
IC2
IC2
IC2
TOOLS INCLUDED
Multi Tool and Hex Wrench
Multi Tool and Hex Wrench
Multi Tool and Hex Wrench

Required

Resources

ARA2102T1
1/18 GRANITE GROM MEGA 380 RTR, Blue
ARA2102T3
1/18 GRANITE GROM MEGA 380 RTR, Green