Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black) w/Spektrum SLT3 2.4GHz Radio

Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
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The Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck delivers a thrilling combination of ARRMA toughness, street truck style and 50+ mph speed capability. Built on the powerful 4X4 BLX platform, its precision aluminum, tough steel and composite materials come together for an easy-to-maintain, super-durable vehicle design that’s now been upgraded to further increase the monster truck’s impressive performance and durability.

Built for exciting bashing speeds and extreme, all-terrain durability, the Big Rock 4x4 V3 includes features that enhance its unstoppable performance. A stronger chassis and retained hinge pin plates; steering with more clearance for stones; a castellated slipper pad and sliding gear mesh; longer suspension arms for a 1.10 inch increase in width; and rubber-shielded bearings throughout are now included to take your bashing session to the next level.

It also now includes a Spektrum SLT3 transmitter and SLR300 receiver. The transmitter is ergonomically designed for long periods of fatigue-free bashing and has a foam wheel for precise fingertip control, plus an improved hand grip and trigger feel. New bashers will be able to set throttle limits at 50% or 75% until they are ready to use the full speed potential. The SLT3 is compatible with Tactic SLT receivers to run other RTR vehicles you may own, and includes a third channel to control optional features such as lights and winches on models that have them.

ARRMA now powers the BIG ROCK 4X4 3S BLX with a brushless system featuring its BLX100 ESC and the Spektrum Firma 3200Kv brushless motor. The combination provides incredible torque, acceleration and speed. The transmission and chassis are ruggedly engineered to take full advantage of the power.

Its full-time 4WD transmission uses strong front, rear, and centerline telescopic driveshafts that can’t be lost during heavy impacts, unlike dogbones. A simple, dependable, responsive steering assembly complements the ultra-reliable drive system and features a servo horn with built-in servo saver. The BIG ROCK 4X4 3S BLX RTR includes the waterproof Spektrum SPMS651 metal-geared digital servo for 15% more torque than the previous ADS-7M servo.

  • Spektrum™ Firma™ 3660 3200Kv brushless motor with Safe D pinion and ARRMA® heatsink and cooling fan
  • Stronger chassis and retained hinge pin plates
  • Steering with more clearance for stones
  • Castellated slipper pad and sliding gear mesh
  • 1.1 inch wider stance for better handling and bashing
  • Plastic locknut for slipper
  • 23T Spline servo saver
  • 37T 1.35Mod diffs with silicone O-rings
  • Power Module with sliding gear mesh and improved dirt management
  • Rubber shielded bearings throughout
  • Oil-filled shocks with silicone O-rings
  • Wider 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 waterproof ESC (For details on waterproof standards, refer to the instruction manual)
  • IC5™ connectors (EC5™) compatible
  • Signature easy-access modular design
    • Easy-access power module
    • Easy-access electronics module
    • Easy-access diff module removal front and rear
  • Double wishbone suspension front and rear
  • Metal-geared differentials
  • Adjustable ride height
  • Adjustable body mounts
  • Adjustable turnbuckles
  • High-speed center driveshaft support
  • Wheelie Bar
  • 2-year limited warranty (see website for details)
  • 50+ MPH (80+ km/h) speed achievable in optimum driving conditions on 3S LiPo
Ball Bearings: Full Ball Bearing Drivetrain
Battery: Sold Separately
Body: Painted, decaled and trimmed
Charger: Sold Separately
Chassis: Molded Composite
Completion Level: Ready-To-Run
Differential: 2 Gear Diffs
Drivetrain: 4WD
Final Drive Ratio: 10.83
Front Track: 14.02 in (356mm)
Power Type: Electric
Gear Pitch0.8MOD
Ground Clearance: 2.17 in (55mm)
Internal Gear Ratio: 2.85
Motor Type: Brushless - Sensorless
Pinion: 15T
Product Height: 7.91" (201 mm)
Product Length: 20.24" (514 mm)
Product Weight: 6.25lbs (2835g)
Product Width14.02" (356 mm)
Radio: Included
Rear Track: 14.02 in (356mm)
Receiver: Included
Scale: 1/10
Servos: Included
Shock Type: Oil-Filled, Coil-Over Springs
Speed Control: Included
Spur Gear: 57T
Suspension: Independent
Vehicle Type: Monster Truck
Wheelbase: 12.87 in (327mm)

  • (1) ARRMA BIG ROCK 4X4 3S BLX 1/10 Scale 4WD Electric Monster 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 Manual
Needed to Complete:
  • 2S LiPo or 3S Hardcase LiPo Battery
  • Compatible Charger
  • LiPo Safe Charging Bag
  • (4) AA Batteries
Verified Owner
Friday, Oct 16 2020 (7 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
Excellent, except for the plain black color the body is slightly thicker than the Senton I had previously and feels tougher. The brushless motor esc is good except for a slight lag when changing direction or starting from a complete stop, probably need to do an adjustment . Only running two cell but fast. Very durable have had it tumbling quite a bit and doing cart wheels nothing broke, very durable. I like the wide wheel base, great truck highly recommended.
Verified Owner
Wednesday, Oct 14 2020 (7 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
I love this truck I've been in hobbie awhile and it still has more than enough power. All of the different settings make it perfect for introducing friends and kids!
Verified Owner
Wednesday, Nov 11 2020 (3 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
This truck is fantastic so happy to add this truck to my rc collection
Verified Owner
Sunday, Nov 1 2020 (5 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
This is my first Aarma vehicle. I LOVE THIS TRUCK. FLIPS VERY EASILY AND DURABLE. I DID HAVE A SERVO GO OUT (JITTERS)But i definateley LOVE the truck...
Verified Owner
Thursday, Oct 29 2020 (5 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
Just recieved my Big Rock a couple weeks ago and have fallen in love. I tend to run the unit at 75% throttle. Gets good battery time for being a 3s. It looks even more badass in person. Really do enjoy the car.

One downside Ive had, I went down a hill getting very minimum air, literally maybe 6 inches off the ground and as it landed, a wheel flew off as the truck came to a stop. Found the issue to be a screw inside the rear drive shaft attaching it the spindle inside the wheel. A little bit of blue loctite and we were back in business.

Overall, great vehicle. Its taken a beating and kept it moving. Simple litle problem, that was fixed easily. Price range wasnt bad either being 319 with a 3s reaching 50 plus. Would recommend for anyone from starter to experienced. Well done Arrma.
Verified Owner
Saturday, Oct 24 2020 (6 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
Pretty thrilled with this arrma. I have mostly crawlers 1/10 scale.
Impressed with handling, speed, agility.
Build fit and finish superb. Great truck at any price.
Love the dual cab truck.
A-Main keeps my business because they have proved to have great customer service. I've had questions, they had patience to answer.
Web site, especially orders, easy to navigate.
Shipping us very fast. They keep me informed immediately is stock ran out.
It's what's important to me and a company is that they keep me informed if I'm spending my money with them on orders. Amainhobbies does this and does it very well. So I will continue to shop with them and spend my money with this company. Thank you A Main Hobbies for being there and being professional
Verified Owner
Thursday, Oct 22 2020 (6 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
I absolutely love this thing! Much better than the 4S Outcast right out of the box. Speed, handling, the look. It's all there with this truck. Arrma did an amazing job with this one!!
Verified Owner
Monday, Oct 19 2020 (7 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
Just like the granite just wider handles better durability great truck cant beat it for the price
Verified Owner
Tuesday, Oct 13 2020 (7 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
A little eaarly for a review, but here are my initial impressions. Out of the box, the truck is not good on pavement at all. The youtube reviews that say it is a little squirrely because of the tires is an understatement. It is all over the place. I know it isn't made for on-road, but this is one of the worst on-road handling experiences I have had. I suspect it is more than the tires. Not sure what tweaks are needed but it you are like me and take it out front of your house for a quick bash, you are going to have a mix of grass and pavement. It is great in the grass, but dangerous on the pavement. I have heard the servo is an upgrade over the old version, seems lack-luster to me neither quick nor strong, but acceptable for RTR. I will definitely be upgrading that. My transmitter came damaged, but Amain is working to get it replaced. Maybe I will try a dumbo radio with gyro? Maybe that is my pavement issues? Shocks definitely need tuning. Lots of chasis slap even from a 12" drop, and rear wants to flip over on jumps. But all isn't band. Far from it. This truck is an amazing value. It is a beast. It is crazy fast, seems to be durable, and just a great overall package. Unlike my SCT trucks, it rips right thru the tall grass. Even with the longer wheelbase, it is a wheelie machine on 3s. It is small enough to bash out front of your house, yet big enough to take to the park and rip some insane jumps and fast enough to satisfy your need for speed. Definitely a recommended truck for your arsenal. And for the radio, I have yet to hear back from ARRMA, but Amain responded immediately.
Verified Owner
Monday, Oct 12 2020 (8 weeks ago)
Arrma Big Rock 4X4 V3 3S BLX 1/10 RTR Brushless Monster Truck (Black)
What a great looking,running and performing truck. If you’re into RC cars, pick yourself one up you won’t regret it.