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ARRMA Big Rock 6S RC Truck: In-Depth Review

RC Guru, July 21, 2025July 21, 2025

Whether you’re an RC enthusiast looking for your next bashing machine or a competitive racer seeking a tough, fast vehicle, the ARRMA Big Rock 6S aims to offer an all-around fun experience. In this review, we will dive into the features, performance, customer feedback, pros, cons, and provide a final verdict to help you decide if this truck is the right choice for you.

ARRMA Big Rock 6S RC Truck
CHECK PRICE ON AMAZON

Key Features and Specifications

The ARRMA Big Rock 6S comes packed with cutting-edge features designed for extreme bashing and performance. Below is an overview of its specifications and features:

FeatureDescription
Scale1/7
Power SystemSpektrum Firma 150A V2 Smart ESC, Spektrum Firma 2050Kv Brushless Motor
ChassisBlack anodized 6061-T6 aluminum
Speed65+ mph with 6S LiPo and included speed pinion
TiresdBoots RAGNAROK V2 vented tires with aggressive off-road tread
ServoSpektrum S665 waterproof metal-gear digital steering servo
ShocksAdjustable, oil-filled shocks with black-anodized aluminum bodies
TransmissionHeavy-duty drivetrain with all-metal diff outdrives and gearbox internals
Radio SystemSpektrum SLT3™ 3-channel 2.4GHz radio with SR315 DSMR® receiver
Body StyleDetailed scale crew cab body in three color choices (White, Red, Gunmetal)
Warranty2-Year limited warranty

The Big Rock 6S boasts a detailed body design, ensuring that it looks as good as it performs. Its scale body is topped with a tough, black-anodized aluminum chassis and shock towers, while its Spektrum brushless power system ensures that you get all the speed and power you need for off-road bashing.

ARRMA Big Rock 6S RC Truck
CHECK PRICE ON AMAZON

Performance

The performance of the ARRMA Big Rock 6S is what truly sets it apart from other RC trucks in its class. Powered by the Spektrum Firma 2050Kv brushless motor and the Spektrum Firma 150A V2 Smart ESC, the Big Rock 6S is capable of reaching speeds in excess of 65 mph when paired with a 6S LiPo battery and the optional speed pinion. This makes it one of the faster RC trucks on the market today.

Speed and Handling

The Big Rock 6S’s speed is impressive, with its ability to hit over 65 mph in optimal conditions. This high speed is coupled with exceptional handling capabilities thanks to its dBoots RAGNAROK V2 vented tires. These tires offer excellent grip and traction across a wide variety of surfaces, including dirt, gravel, and grass. Whether you’re driving on smooth roads or tackling rugged off-road terrain, the Big Rock 6S maintains its stability and speed.

Durability and Build Quality

When it comes to durability, the ARRMA Big Rock 6S shines. The truck is built to handle rough conditions, featuring a black-anodized 6061-T6 aluminum chassis, all-metal drivetrain components, and adjustable oil-filled shocks. The shock towers are also made from anodized aluminum, ensuring that the truck can absorb jumps and impacts without suffering damage.

The Spektrum S665 waterproof steering servo adds to its toughness, providing strong, responsive control even in wet or muddy conditions. The truck’s reinforced, heavy-duty drivetrain ensures that the power is efficiently transferred to the wheels, allowing the truck to take on rough terrain with ease.

Battery and Power System

The Big Rock 6S requires a 2S, 3S, 4S, or 6S hardcase LiPo battery (not included), and when equipped with a 6S LiPo battery, the truck delivers thrilling performance. However, some users have reported that the battery life can be a bit short during heavy use, which could be a downside for those looking for longer playtime between charges. On the positive side, the Smart ESC provides an efficient power system, allowing for optimal performance across various terrains.

ARRMA Big Rock 6S RC Truck
CHECK PRICE ON AMAZON

Customer Feedback

The ARRMA Big Rock 6S has received positive feedback from customers, who have praised its performance, durability, and styling. Below are some common themes in the customer reviews:

Positive Feedback

  1. Speed and Power: Many customers highlight the truck’s incredible speed, with some reporting that it reaches its 65+ mph top speed with ease. This makes the truck a thrilling ride for speed enthusiasts.
  2. Durability: Users are impressed by the ruggedness of the truck, especially its metal drivetrain and robust chassis. Several customers mentioned using the truck for aggressive off-roading without experiencing major issues.
  3. Styling: The detailed scale body of the Big Rock 6S, along with the sleek black anodized chassis components, has been appreciated by many customers who enjoy the truck’s aesthetic appeal. It’s clear that ARRMA put a lot of effort into ensuring that the Big Rock 6S not only performs well but looks great as well.
  4. Handling: The truck’s handling on various surfaces is widely praised. Customers note that the Big Rock 6S is stable and easy to control, even when speeding through rough terrain or during high-speed maneuvers.

Negative Feedback

  1. Battery Life: A few customers have expressed concerns over the truck’s battery life, particularly during extended bashing sessions. Some noted that the truck’s battery can die prematurely, which could be frustrating for users expecting longer runtime.
  2. Price: While the Big Rock 6S is packed with features, some users feel that the price point could be a little more competitive, especially considering that the truck does not come with a battery or charger, which are essential for running the truck.
ARRMA Big Rock 6S RC Truck
CHECK PRICE ON AMAZON

Pros and Cons

Pros

AdvantageDescription
High SpeedCapable of speeds over 65 mph with a 6S LiPo battery.
DurabilityBuilt to withstand extreme conditions with its all-metal drivetrain and anodized aluminum parts.
HandlingExceptional grip and control across various terrains thanks to the dBoots RAGNAROK V2 tires.
Aesthetic AppealRealistic scale details and tough styling make the Big Rock 6S a great-looking truck.
Powerful MotorThe Spektrum Firma 2050Kv motor provides plenty of power for high-speed bashing.

Cons

DisadvantageDescription
Battery LifeShort battery life during intensive use, requiring frequent recharging.
PriceThe cost is relatively high, and the truck does not include a battery or charger.

Final Verdict

The ARRMA Big Rock 6S RC truck is an excellent choice for RC enthusiasts who are looking for a fast, durable, and stylish truck capable of handling extreme conditions. Its powerful brushless motor, metal drivetrain, and high-quality components make it a standout option for off-road bashing and racing. The 65+ mph top speed is sure to satisfy those seeking a thrilling experience, while the durable build ensures that it will last through many intense sessions.

Enjoyed this review of ARRMA Big Rock 6S RC Truck? Then be sure to check out our other RC Rating guides.

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