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ARRMA 1/10 BIG ROCK 4X4 V3 3S BLX Brushless Monster Truck RTR, Black (ARRMA 4312V3 | ARA4312V3)

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Model: ARRMA 4312V3
Dist. #: ARA4312V3   SKU: ARA4312V3

Customer Reviews: Rated 5.0 stars 5 of 5 (1 Review)

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List Price:  $399.99
Price:  $349.99
You Save:  $50 (13%)

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Updated on Sep 28, 2025 03:20:21 AM

1/10 BIG ROCK 4X4 V3 3S BLX Brushless Monster Truck RTR, Black...


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Features

More powerful chassis and retained hinge pin plates

Steering with more clearance for stones

Castellated slipper pad and moving equipment mesh

1.1 inch broader position for better handling and slamming

Plastic locknut for slipper

23T Spline servo saver

37T 1.35Mod diffs with silicone O-rings

Power Module with moving equipment mesh and enhanced dirt management

Rubber protected bearings throughout
Oil-filled shocks with silicone O-rings

Larger arms front and rear

Body with matte black finish

Front and rear bumpers with matte black finish

Tough black multi-spoke wheels with matte black finish

Vented multi-terrain dBoots® RAGNAROK™ tires

BLX100 2S/3S water resistant* ESC

*For information on water resistant requirements, describe the guideline manual.

IC5™ ports (EC5™) compatible

Signature easy-access modular style

Easy-access power module

Easy-access electronic devices module

Easy-access diff module removal front and rear

Double wishbone suspension front and rear

Metal-geared differentials

Adjustable flight height

Adjustable body mounts

Adjustable turnbuckles

High-speed center driveshaft assistance

Wheelie Bar

2-year restricted service warranty (see site for information)

50+ MPH (80+ km/h) speed possible in maximum driving conditions on THREE LiPo





Overview
A terrific step-up from brushed slamming, the 1/10 scale ARRMA® BIG ROCK™ CREW CAB 4X4 THREE BLX ready-to-run monster truck delivers an awesome mix of ARRMA® strength, street truck design and 50+ mph speed ability. Constructed on the powerful 4X4 BLX platform, its accuracy aluminum, tough steel and composite materials come together for an easy-to-maintain, super-durable vehicle style that’s now been upgraded to more boost the monster truck’s excellent efficiency and durability.
The BIG ROCK™ 4X4 THREE BLX is DEVELOPED QUICK, DEVELOPED DIFFICULT — built for interesting slamming speeds and severe, all-terrain sturdiness. New features that improve its unstoppable efficiency consist of a more powerful chassis and retained hinge pin plates; guiding with more clearance for stones; a castellated slipper pad and moving equipment mesh; longer suspension arms for a 1.10 inch boost in width; and rubber-shielded bearings throughout.
It also now consists of a Spektrum™ SLT3™ transmitter and SLR300 receiver. The transmitter is ergonomically developed for long periods of fatigue-free slamming and has a foam wheel for exact fingertip control, plus a better hand grip and trigger feel. New bashers will be able to set throttle limits at 50% or 75% till they are ready to use the full speed potential. The SLT3™ is compatible with Technique® SLT™ receivers to run other RTR lorries you might own, and consists of a 3rd channel to manage optional functions such as lights and winches on models that have them.
ARRMA® now powers the BIG ROCK™ 4X4 THREE BLX with a brushless system featuring its BLX100 ESC and the Spektrum™ Firma™ 3200Kv brushless motor. The mix offers unbelievable torque, velocity and speed. The transmission and chassis are ruggedly engineered to make the most of the electronic devices’ power.
It has the ingenious modular style refined by ARRMA® engineers for easy element gain access to and maintenance. The power module, with enhanced dirt management, consists of the motor with ARRMA® heatsink and cooling fan, plus motor plate, slipper clutch assembly and equipment cover. The power module can be separated from the chassis as a total unit by eliminating just one screw. With the power module got rid of, the slipper clutch can be reached easily for changes by taking out three screws that connect the equipment cover. The equipment ratio can be finely tuned as the power module now uses a moving motor mesh design.
A two-piece molding screwed to the truck’s chassis functions as its electronic devices module, containing a water resistant receiver box, servo mount and ESC tray. The SLR300 receiver mounts inside the receiver box for defense from dirt and moisture. The ultra-compact ESC is screwed to the top of the module, allowing fast access to the on/off switch, while the servo mounts to the side. All three components can be gotten rid of together, rapidly and easily.
The differential module homes each differential unit in an ingenious yoke style. Just 8 screws require to be gotten rid of to launch the front and rear yokes. The power module can then be separated, allowing you to pivot the transmission cases for differential gain access to. The BIG ROCK™ 4X4 THREE BLX RTR comes brushless-ready with 37T 1.35mod diffs with silicone O-rings. The large gears can endure substantial torque, and internal metal gears have actually been picked for dependability during severe bashing.
Its full-time 4WD transmission uses strong front, rear, and centerline telescopic driveshafts that can’t be lost during heavy effects, unlike dogbones. A simple, trustworthy, responsive guiding assembly matches the ultra-reliable drive system and features a servo horn with built-in servo saver. The BIG ROCK™ 4X4 THREE BLX RTR consists of the water resistant Spektrum™ SPMS651 metal-geared digital servo for 15% more torque than the previous variation’s ADS-7M servo.
The self-bleeding, oil-filled shocks, now with silicone O-rings, use an attempted and checked, coil-over style for basic maintenance and incredible handling. Their ingenious rod-end has a molded-in spring perch for extra strength. Extended height dirt protectors and a close-fitting body limitation the quantity of dirt and debris that can enter into the chassis tub. Front and rear bumpers use defense against impacts.
Accented by matte black front and rear bumpers and wheels, the BIG ROCK™ 4X4 THREE BLX truck’s long, scale Crew Taxi body marks the epitome of street design. With the included dBoots® RAGNAROK™ MT tires, you’ll take it on the run over dirt tracks, tracks and even muddy courses. An adjustable wheelie bar comes as standard, letting you delight in a little stunt enjoyable along the way.





Needed to Total

TWO LiPo or THREE Hardcase LiPo Battery

Suitable Charger

LiPo Safe Charging Bag

(4) AA Batteries

What remains in the Box?

(1) ARRMA® BIG ROCK™ 4X4 THREE BLX 1/10 Scale 4WD Electric Beast Truck RTR

(1) BLX100 2S/3S Waterproof* ESC

(1) Spektrum™ Firma™ 3660 3200Kv Brushless Motor

(1) Spektrum™ 2.4GHz SLT3™ 3-Channel Transmitter

(1) Spektrum™ SLR300 Receiver

(1) Spektrum™ SPMS651 Waterproof* Metal-Geared Digital Servo

(1) Item Manual

*For information on water resistant requirements, describe the instruction manual.







Spektrum 3-Channel SLT3 2.4GHz radio and SLR300 Water resistant* Receiver

Spektrum™ 3-Channel SLT3™ 2.4GHz radio and SLR300 Waterproof* Receiver
Quick action SLT™ procedure

Foam wheel

Improved grip and trigger feel

Improved wheel and trigger force

2-way thumb switch third channel

50% and 75% Throttle mode (for novices)

Technique® SLT™ receiver compatible

 

Spektrum SPMS651 Metal-Geared Digital Servo

Spektrum™ SPMS651 Metal-Geared Digital Servo

101 oz-in (7.27 kg-cm) @ 6V

15% more torque than the previous ADS-7M servo for enhanced steering feel

Water resistant*

*For information on water resistant requirements, describe the instruction manual.

 





Spektrum Firma 3660 3200Kv brushless motor with Safe D pinion and ARRMA heatsink and cooling fan

Spektrum™ Firma™ 3660 3200Kv brushless motor with Safe D pinion and ARRMA® heatsink and cooling fan
 

Strengthened Chassis

Strengthened Chassis
More powerful chassis and retained hinge pin plates
 





Larger pull tab on power module

Larger pull tab on power module

 

Castellated slipper pad and moving equipment mesh

Castellated slipper pad and sliding gear mesh
 





Rubber protected bearings

Rubber shielded bearings

 

Upgraded Steering

Redesigned Steering
Steering with more clearance for stones.
 





Tougher brushless ready transmission

Tougher brushless ready transmission
Metal input spline moulded into composite equipment. Exact same gears as the ARRMA FOUR.
 

Sealed Wheels & Vented Tires

Sealed Wheels & Vented Tires
Stops dirt getting in and permits water to get away.
 





dBoots RAGNAROK MT tires

dBoots® RAGNAROK™ MT tires
With the included dBoots® RAGNAROK™ MT tires, you’ll take it on the run over dirt tracks, tracks and even muddy courses.
 

Silicone O-rings

Silicone O-rings
Oil-filled shocks with silicone O-rings
 




Wider Stance

Larger Stance
1.1 inch broader position for better handling and slamming
 

Proven Power Package

Proven Power Package
Fantastic power and efficiency.
 





Easy-access power module

Easy-access power module
Detaches from chassis as a total unit by eliminating one screw.
Contains motor, motor plate, slipper clutch assembly and equipment cover.

 

Easy-access electronic devices module

Easy-access electronics module
Two-piece molding screwed to the chassis contains a water resistant receiver box, servo mount, and ESC tray.
Receiver mounts inside sealed module for defense from dirt and moisture.
ESC screws to the top for easy maintenance and switch access.
Servo mounts on the side for fast servicing.

 





Metal-geared differentials

Metal-geared differentials
Big gears can endure substantial torque, and internal metal gears have actually been picked for dependability during severe bashing.
Easy-access front and rear diff module removal.

 

Proven tough composite shock towers

Proven tough composite shock towers

 



Frequently Bought Together

ARRMA 1/10 BIG ROCK 4X4 V3 3S BLX Brushless Monster Truck RTR, Black
+
Spektrum 5000mAh 3S 11.1V 50C Smart LiPo Hardcase; IC5
+
Common Sense RC Lectron Pro 11.1V 5200mAh 50C Lipo Battery with EC5 Connector
This Item: ARRMA 1/10 BIG ROCK 4X4 V3 3S BLX Brushless Monster Truck RTR, Black
$349.99
Spektrum 5000mAh 3S 11.1V 50C Smart LiPo Hardcase; IC5
$82.99
Common Sense RC Lectron Pro 11.1V 5200mAh 50C Lipo Battery with EC5 Connector
$72.09

Total Price: $505.07

Add All Three To Cart
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Rated 5 stars Pretty fast with 3s
By Ricardo S on June 25, 2021   Verified Purchase

Excellent build quality, it is really powerful with 3s lipo. It's definitely built for performance off road. Radio is ok range is decent, other electronics are pretty good.

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