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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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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

Cole Hendricks
Average Rating: 1
Verified Owner
Friday, Mar 15 2019 (3 days 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...
Jeromy Gednalske
Average Rating: 5
Verified Owner
Tuesday, Feb 19 2019 (4 weeks 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.
Michael Evans
Average Rating: 5
Verified Owner
Tuesday, Feb 19 2019 (4 weeks 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!!