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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 Jul 11, 2025 08:16:27 PM

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

Guiding with more clearance for stones

Castellated slipper pad and moving equipment mesh

1.1 inch larger stance for much better handling and bashing

Plastic locknut for slipper

23T Spline servo saver

37T 1.35Mod diffs with silicone O-rings

Power Module with moving equipment mesh and improved dirt management

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

Larger arms front and rear

Body with matte black surface

Front and rear bumpers with matte black surface

Difficult black multi-spoke wheels with matte black surface

Vented multi-terrain dBoots® RAGNAROK™ tires

BLX100 2S/3S waterproof* ESC

*For information on waterproof standards, describe the instruction manual.

IC5™ connectors (EC5™) suitable

Signature easy-access modular style

Easy-access power module

Easy-access electronic devices module

Easy-access diff module elimination front and rear

Double wishbone suspension front and rear

Metal-geared differentials

Adjustable trip height

Adjustable body mounts

Adjustable turnbuckles

High-speed center driveshaft assistance

Wheelie Bar

2-year limited warranty (see website for information)

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





Overview
An excellent step-up from brushed bashing, the 1/10 scale ARRMA® BIG ROCK™ CREW CAB 4X4 THREE BLX ready-to-run monster truck delivers an exhilarating combination of ARRMA® durability, street truck design and 50+ mph speed capability. Developed on the effective 4X4 BLX platform, its accuracy aluminum, hard steel and composite products come together for an easy-to-maintain, super-durable vehicle style that’s now been updated to additional boost the monster truck’s impressive efficiency and durability.
The BIG ROCK™ 4X4 THREE BLX is CREATED QUICK, CREATED DIFFICULT — built for amazing bashing speeds and extreme, all-terrain sturdiness. New includes that boost its unstoppable efficiency include a more powerful chassis and retained hinge pin plates; steering 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 likewise now includes a Spektrum™ SLT3™ transmitter and SLR300 receiver. The transmitter is ergonomically created for extended periods of fatigue-free bashing and has a foam wheel for exact fingertip control, plus a better hand grip and trigger feel. New bashers will have the ability to set throttle limits at 50% or 75% till they are prepared to utilize the complete speed capacity. The SLT3™ is compatible with Tactic® SLT™ receivers to run other RTR cars you might own, and includes a 3rd channel to control optional features 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 combination provides unbelievable torque, velocity and speed. The transmission and chassis are ruggedly engineered to maximize the electronic devices’ power.
It has the innovative modular style refined by ARRMA® engineers for easy component access and upkeep. The power module, with improved 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 detached from the chassis as a complete system by removing simply one screw. With the power module removed, the slipper clutch can be reached easily for modifications by getting 3 screws that attach the equipment cover. The equipment ratio can be finely tuned as the power module now utilizes a moving motor mesh design.
A two-piece molding screwed to the truck’s chassis functions as its electronic devices module, containing a waterproof receiver box, servo mount and ESC tray. The SLR300 receiver mounts inside the receiver box for security from dirt and moisture. The ultra-compact ESC is screwed to the top of the module, enabling quick access to the on/off switch, while the servo mounts to the side. All 3 elements can be removed together, quickly and easily.
The differential module homes each differential system in an ingenious yoke style. Only eight screws require to be removed to release the front and rear yokes. The power module can then be detached, enabling you to pivot the transmission cases for differential access. The BIG ROCK™ 4X4 THREE BLX RTR comes brushless-ready with 37T 1.35mod diffs with silicone O-rings. The big gears can withstand substantial torque, and internal metal gears have been selected for dependability during extreme bashing.
Its full-time 4WD transmission utilizes strong front, back, and centerline telescopic driveshafts that can’t be lost during heavy impacts, unlike dogbones. An easy, dependable, responsive steering assembly matches the ultra-reliable drive system and includes a servo horn with built-in servo saver. The BIG ROCK™ 4X4 THREE BLX RTR includes the waterproof Spektrum™ SPMS651 metal-geared digital servo for 15% more torque than the previous version’s ADS-7M servo.
The self-bleeding, oil-filled shocks, now with silicone O-rings, utilize an attempted and checked, coil-over style for easy upkeep and amazing handling. Their ingenious rod-end has a molded-in spring perch for additional durability. Prolonged height dirt protectors and a close-fitting body limitation the amount of dirt and particles that can get into the chassis tub. Front and rear bumpers provide 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 consisted of 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 take pleasure in a little stunt fun along the way.





Needed to Complete

2S LiPo or THREE Hardcase LiPo Battery

Suitable Battery charger

LiPo Safe Charging Bag

(4) AA Batteries

What's in package?

(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) Product Handbook

*For information on waterproof standards, describe the instruction manual.







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

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

Foam wheel

Enhanced grip and trigger feel

Enhanced wheel and trigger force

2-way thumb switch 3rd channel

50% and 75% Throttle mode (for novices)

Tactic® SLT™ receiver suitable

 

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 improved steering feel

Waterproof*

*For information on waterproof standards, 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 shielded bearings

Rubber shielded bearings

 

Revamped Guiding

Redesigned Steering
Steering with more clearance for stones.
 





Harder brushless prepared transmission

Harder brushless prepared 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 consisted of 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 Position

Larger Position
1.1 inch larger stance for much better handling and bashing
 

Proven Power Bundle

Proven Power Package
Incredible power and efficiency.
 





Easy-access power module

Easy-access power module
Detaches from chassis as a complete system by removing 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 waterproof receiver box, servo mount, and ESC tray.
Receiver mounts inside sealed module for security from dirt and moisture.
ESC screws to the top for easy upkeep and switch access.
Servo mounts on the side for quick maintenance.

 





Metal-geared differentials

Metal-geared differentials
Big gears can withstand substantial torque, and internal metal gears have been selected for dependability during extreme bashing.
Easy-access front and rear diff module elimination.

 

Proven hard 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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