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ARA4312V4T1 BIG ROCK 223S BLX (Black)ARA4312V4T2 BIG ROCK 223S BLX (Green)ARA4312V4T3 BIG ROCK 223S BLX (Blue)
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ARA4312V4T1 BIG ROCK 223S BLX (Black)
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ARA4312V4T3 BIG ROCK 223S BLX (Blue)
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ARA4312V4T2 BIG ROCK 223S BLX (Green)
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ARA4312V4T1 BIG ROCK 223S BLX (Black)
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ARA4312V4T3 BIG ROCK 223S BLX (Blue)
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ARA4312V4T2 BIG ROCK 223S BLX (Green)
Fun, Tough & Amazing Value With No Compromises
2S or 3S; Have It Your Way
Powerful Spektrum Electronics
Great Features
Under The Hood
Check It Out
Specifications



ARRMA Part Number
ARA4312V4T1
ARA4312V4T2
ARA4312V4T3
Vehicle Name
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Black
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Green
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Blue
SCALE
1/10
1/10
1/10
MAX SPEED POSSIBLE
50+mph / 80+km/h
50+mph / 80+km/h
50+mph / 80+km/h
POWER TYPE
Brushless
Brushless
Brushless
BUILD STATUS
RTR
RTR
RTR
Saleable Part #
ARA4312V4T1
ARA4312V4T2
ARA4312V4T3
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
514mm / 20.24"
514mm / 20.24"
514mm / 20.24"
WHEELBASE
327mm / 12.87"
327mm / 12.87"
327mm / 12.87"
RIDE HEIGHT
55mm / 2.17"
55mm / 2.17"
55mm / 2.17"
FRONT WIDTH
351mm / 13.82"
351mm / 13.82"
351mm / 13.82"
REAR WIDTH
356mm / 14.02"
356mm / 14.02"
356mm / 14.02"
HEIGHT
201mm / 7.91"
201mm / 7.91"
201mm / 7.91"
NUMBER OF DIFFERENTIALS
3
3
3
WEIGHT (NO BATTERY)
3.55kg / 7lbs 13oz
3.55kg / 7lbs 13oz
3.55kg / 7lbs 13oz
BATTERY RECOMMENDATIONS
2S or 3S Lipo (Hardcase only) within dimensions 165 x 51 x 48mm / 6.5 x 2.01 x 1.89 inches
2S or 3S Lipo (Hardcase only) within dimensions 165 x 51 x 48mm / 6.5 x 2.01 x 1.89 inches
2S or 3S Lipo (Hardcase only) within dimensions 165 x 51 x 48mm / 6.5 x 2.01 x 1.89 inches
WARRANTY LEVEL
2 Year Limited
2 Year Limited
2 Year Limited



ARRMA Part Number
ARA4312V4T1
ARA4312V4T2
ARA4312V4T3
Vehicle Name
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Black
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Green
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Blue
BODY LENGTH
450mm / 17.72"
450mm / 17.72"
450mm / 17.72"
BODY WIDTH
160mm / 6.3"
160mm / 6.3"
160mm / 6.3"
BODY HEIGHT
114mm / 4.49"
114mm / 4.49"
114mm / 4.49"
FRONT SPRING RATE
1N/mm
1N/mm
1N/mm
REAR SPRING RATE
0.84N/mm
0.84N/mm
0.84N/mm
CAPTURED HINGEPINS
Yes
Yes
Yes
TURNBUCKLES/FIXED LINKS
Turnbuckles
Turnbuckles
Turnbuckles
HARDWARE TYPE
Hex Head
Hex Head
Hex Head
LOCKING DIFFS
No
No
No
DIFFERENTIAL TYPE
Gear
Gear
Gear
STANDARD SHOCK OIL (Viscosity)
500cSt
500cSt
500cSt
STANDARD DIFF OIL (Viscosity)
10,000cSt
10,000cSt
10,000cSt
STANDARD SHOCK OIL (Type)
Silicone
Silicone
Silicone
STANDARD DIFF OIL (Type)
Silicone
Silicone
Silicone
DIFFERENTIAL CROWN GEAR SPECIFICIATION
37T 1.35m
37T 1.35m
37T 1.35m
DIFFERENTIAL PINION GEAR SPECIFICIATION
13T 1.35m
13T 1.35m
13T 1.35m
INTERNAL GEAR RATIO
2.85
2.85
2.85
INTERNAL GEAR MATERIAL
Plastic
Plastic
Plastic
FITTED SPUR SIZE
57Tooth
57Tooth
57Tooth
FITTED SPUR MATERIAL
Metal
Metal
Metal
FITTED PINION GEAR SIZE
16Tooth
16Tooth
16Tooth
FITTED PINION MATERIAL
Metal
Metal
Metal
PINION AND SPUR TOOTH PITCH
0.8m
0.8m
0.8m
STANDARD FINAL GEAR RATIO
10.15
10.15
10.15
TIRE STANDARD
MT (2.8")
MT (2.8")
MT (2.8")
TIRES INCLUDED
dBoots Ragnarok MT
dBoots Ragnarok MT
dBoots Ragnarok MT
TIRE DIAMETER
130mm / 5.12"
130mm / 5.12"
130mm / 5.12"
TIRE INSERT TYPE
Medium
Medium
Medium
DRIVESHAFT TYPE
UJ Slider
UJ Slider
UJ Slider
WHEEL BEAD DIAMETER
71.5mm / 2.81"
71.5mm / 2.81"
71.5mm / 2.81"
WHEEL HEX SIZE
14mm
14mm
14mm
WHEEL STANDARD
MT
MT
MT
WHEEL COLOR/FINISH
Black
Black
Black
MOUNTED TIRES
Yes
Yes
Yes
TIRE ATTACHMENT METHOD
Glue
Glue
Glue
SERVO HORN MATERIAL
Plastic
Plastic
Plastic
SERVO SPLINE SIZE
25T
25T
25T
BATTERY MAX DIMENSIONS
165x51x48mm / 6.5x2.01x1.89"
165x51x48mm / 6.5x2.01x1.89"
165x51x48mm / 6.5x2.01x1.89"
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
2025
2025
2025



ARRMA Part Number
ARA4312V4T1
ARA4312V4T2
ARA4312V4T3
Vehicle Name
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Black
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Green
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Blue
POWER LEVEL
3S
3S
3S
RADIO SYSTEM
Spektrum SLT3 Tx/Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum SLT3 Tx/Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum SLT3 Tx/Spektrum 8010RX Brushless 2in1 Unit with Gyro
2.4Ghz
Yes
Yes
Yes
NUMBER OF RADIO CHANNELS
3
3
3
ESC
Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum 8010RX Brushless 2in1 Unit with Gyro
WATERPROOF ELECTRONICS
Yes
Yes
Yes
ESC CONNECTOR TYPE
IC5
IC5
IC5
MOTOR
Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum 8010RX Brushless 2in1 Unit with Gyro
Spektrum 8010RX Brushless 2in1 Unit with Gyro
MAXIMUM MOTOR SIZE
3660
3660
3660
SERVO
SPEKTRUM S662
SPEKTRUM S662
SPEKTRUM S662
SERVO GEAR MATERIAL
Metal
Metal
Metal
MAX SERVO TORQUE @6v
12KGkg-cm / 167oz-in
12KGkg-cm / 167oz-in
12KGkg-cm / 167oz-in
MAX SERVO SPEED @6v
0.14sec
0.14sec
0.14sec



ARRMA Part Number
ARA4312V4T1
ARA4312V4T2
ARA4312V4T3
Vehicle Name
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Black
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Green
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Blue
Included
BATTERY INCLUDED
No
No
No
BATTERY CONNECTOR SUPPLIED
IC5
IC5
IC5
TOOLS INCLUDED
Multi Tool and Hex Wrenches (2.0, 2.5mm)
Multi Tool and Hex Wrenches (2.0, 2.5mm)
Multi Tool and Hex Wrenches (2.0, 2.5mm)
Required
REQUIRED ITEMS
2S LiPo or 3S Hardcase LiPo Battery, LiPo Charging Bag, Charger
2S LiPo or 3S Hardcase LiPo Battery, LiPo Charging Bag, Charger
2S LiPo or 3S Hardcase LiPo Battery, LiPo Charging Bag, Charger
Resources

ARA4312V4T1
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Black

ARA4312V4T2
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Green

ARA4312V4T3
1/10 BIG ROCK 223S DSC 4X4 RTR Brushless Monster Truck, Blue