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Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue) w/TTX300 2.4GHz Radio

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This item is discontinued and no longer available for purchase. It has been replaced by ARA102723.
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LiPo Batteries
$74.99 - Dynamite Reaction 2.0 3S 50C Hardcase LiPo Battery w/EC5 (11.1V/5000mAh) (details...)
$68.99 - Dynamite Reaction HD 2S 50C Hard Case LiPo Battery w/EC5 (7.4V/5000mAh) (details...)
Alkaline Batteries
$4.19 - Fuji EnviroMAX AA Super Alkaline Battery (4) (details...)
Low Price: $319.99
Discontinued Online

The Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck brings the popular “street truck” style of the 1/8 scale BIG ROCK — but in 1/10 scale size built on the powerful 4x4 BLX platform. It’s a great step up from brushed bashing and a must for any driver who wants ARRMA toughness and 50+ mph speeds!

Accented by black chrome-plated front and rear bumpers and wheels, the BIG ROCK CREW CAB 4X4 3S BLX truck’s long, scale crew cab body marks the epitome of street style. With the included dBoots RAGNAROK MT tires, you’ll take it on the run over dirt tracks, trails, and even muddy courses. An adjustable wheelie bar comes standard, letting you enjoy a little stunt fun along the way.

ARRMA engineers made sure the BIG ROCK CREW CAB 4X4 3S BLX Brushless 1/10TH 4WD Monster Truck has the muscle and durability to overcome any challenge. Its transmission and chassis designs, already proven on the GRANITE and SENTON 4x4 3S BLX RTRs, deliver the toughness you’ll need to take full advantage of the BLX100 brushless power system. When the 3200Kv brushless motor and 100A ESC do their thing, the BIG ROCK CREW CAB 4X4 3S BLX releases an avalanche of speed.

The BIG ROCK 4X4 3S BLX comes ready-to-run, requiring only battery, charger, and “AA” transmitter batteries. A Tactic TTX300 3-channel radio system is provided for dependable control that perfectly suits your driving style.


  • ARRMA toughness and performance
  • 3S-capable BLX100 Brushless Power System with 100A ESC and 3200Kv brushless motor
  • 50+ mph speed potential
  • Scale long crew cab body for “street truck” realism
  • Full-time 4WD transmission with strong diff gears
  • Tactic TTX300 2.4GHz radio system with metal gear steering servo
  • Strong telescopic front, rear, and center driveshafts
  • Oil-filled, self-bleeding shocks
  • Long wheelbase side guards
  • Black chrome-plated scale front and rear bumpers
  • Black chrome-plated street truck wheels
  • dBoots RAGNAROK MT tires
  • Adjustable wheelie bar
  • Modular power, electronics, and differential systems that remove easily for maintenance
Chassis: Molded Composite    
Completion Level: Ready-To-Run    
Differential: Gear    
Height: 7.19 in (201 mm)    
Internal Gear Ratio: 2.85    
Motor Size: 3660    
Motor Type: BLX 3200KV BRUSHLESS    
Pinion: 15T    
Radio: 3-Channel Tactic TTX300 2.4GHz    
Servos: ADS-7M Waterproof Metal Gear Servo    
Size/Scale: 1/10    
Speed Control: ARRMA BLX100 Waterproof    
Spur Gear: 57T    
Tire Diameter: 5.12 in (130 mm)    
Vehicle Type: Monster Truck    
6.25 lbs (2.84 kg)    
Wheel Diameter: 2.81 in (71.5 mm)    
Wheel Hex Size: 14mm Hex    
Wheel Type: MT    
Wheelbase: 12.87 in (327mm)    
Width: 12.91 in (328mm)
Length: 20.34" (514mm)

Needed to Complete:
  • 6 to 8-cell NiMH, 2S LiPo, or 3S LiPo Hardcase Battery
  • Appropriate LiPo-compatible Charger
  • 4 AA Batteries
  • LiPo Charging Bag (recommended)
  • (1) ARRMA BIG ROCK CREW CAB 4X4 BLX Brushless 1/10 Monster Truck
  • (1) Tactic TTX300 2.4GHz Radio System
  • (1) Product Manual

This product was added to our catalog on November 12, 2018

Friday, Jun 14 2019 (5 weeks ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
I want to start this by saying this is a very unique concept of truck and I commend arrma for thinking a bit outside the box with this one. I give the creativity +1 for the star rating. However, now for the nitty gritty. These trucks are okay. The blx system should be powerful enough to outperform the competition from traxxas and the all plastic driveline is surprisingly durable. However, as is always the case with arrma, they had to mess something up. In this case, the shocks leak oil an unprecedented amount and are basically useless. The rear driveshafts are likely to need upgrading at some point but hopefully arrma has fixed this with with the $40 cvd. They are frustrating to work on though. The power module is needlessly over engineered and hard to remove, requires a aftermarket motor mount or to modify the stock fixed mount as it is not cut right to mesh with a 15t pinion, Possibly more, and arrma seems to have no interest in fixing this unacceptable oversight. In addition, the servo is slower and weaker than stated as the specs listed are at 7.2v and the bec is 6v. In general the arrma servos easily start glitching. Consider the competition from traxxas and both need work and I believe you’ll find a more solid base in traxxas.
Verified Owner
Wednesday, May 1 2019 (3 months ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
Had this truck since January. Best 1/10 rtr monster truck Ive ever owned. Plenty of power extremely tough and easy to work on. Coming from mostly 1/10 2wd and 4wd traxxas vehicles this truck is much stronger. My biggest frustration with stock traxxas trucks are blown shock caps, snapped half shafts, and screws backing out. After 4 months of bashing on 3s power the shocks still hold oil, the original half shafts have yet to break, and screws stay put. The only part Ive managed to break is a front control arm. This was from a direct rock strike that brought the truck to a complete stop. The only other issue was the servo motor gave out. However, this was covered under the 2 year arrma warranty. The horizon hobby customer service reps are top notch and had me a replacement servo to my door in less than a week. The replacement servo has been trouble free since. The only real thing I see that could be improved is the steering. It is a bit sloppy but this issue is really only noticeable when driving on the road. If you want a truck that will take a beating right out of the box time after time I would highly recommend this truck.
Friday, Apr 12 2019 (3 months ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
This truck has a ton of bang for the buck. My son has gone through several 3S pack runs without any breakage. To be completely honest this amazes me as he has zero throttle control, backflips on trees and multiple cartwheels it has held up. He has had a few like priced short course trucks that couldn’t compare even after adding MIP drivetrain and RPM limbs they still didn’t hold up like this truck did right out of the box. At the end of the day I would recommend this truck to anyone looking for a 3S truck.
Verified Owner
Tuesday, Feb 19 2019 (5 months ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
Great customer service.
Truck is amazing.
Will continue using amain.
Verified Owner
Tuesday, Feb 19 2019 (5 months ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
I love my Arrma Big Rock Crew Cab! It's well built and is very durable when Bashing on high jumps and landings!
I have added T-bone front & rears bumpers and added 4 3S 5500mah Lipos for the BRCC & my 1/8 DHK Zombie 8e MT !
I hope to buy a Arrma 6S Kraton or Notorious within the next couple of months! I Love amain & Arrma RC's!!
Verified Owner
Friday, Mar 15 2019 (4 months ago)
Arrma Big Rock Crew Cab 4X4 3S BLX 1/10 RTR Brushless Monster Truck (Blue)
Worst RC car I have ever purchased, I would not recommend it to anyone. The spur gear kept burning out after 2-3 battery packs, next the center driveshaft snapped in half taking the high speed support with it. After further inspection, I found that the bearings in the engine are bad which was causing all of the other problems(there is play in the pinion). Keep in mind I only have 2-3 hours of runtime on the car and already have a major issue with the motor. I've had other RC's and this is by far the worst and caused me the most headaches. I contacted amain about it, to see if they would send me a replacement because I was pretty sure it was defective from the factory. They told me that because I have 2-3 hours of run time on the car that they can't help me and it's not covered by warranty. So amain basically told me that either this truck was defective but they can't help me because I used it(wouldn't have known it had problems if I didn't use it) or that this truck is just a huge piece of garbage and that's why i'm having all of these problems. Anyways take it from someone who bought this truck and now regrets the purchase, DO NOT BUY THIS TRUCK OR ANY ARRMA FOR THAT MATTER. Save your money, this truck is not worth the time, effort, or headaches you will more than likely experience. Another thing, I have only owned this truck for 5 days...