The ARRMA® BIG ROCK™ CREW CAB 4X4 3S BLX offers scale realism, dirt-chucking action and 50+ mph speed potential! It’s also updated with a Spektrum™ SLT3™ radio, Firma™ brushless motor, tougher chassis, wider stance, stronger steering servo and more.

A great step-up from brushed bashing, the 1/10 scale ARRMA® BIG ROCK™ CREW CAB 4X4 3S BLX ready-to-run 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 aluminium, 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.

New ARRMA Big Rock 4×4 3S BLX 2020 (V3) version! What’s new?

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

1. Fast response SLT™ protocol
2. Foam wheel
3. Improved grip and trigger feel
4. Improved wheel and trigger force
5. 2-way thumb switch third channel
6. 50% and 75% Throttle mode (for beginners)
7. Tactic® SLT™ receiver compatible

• Spektrum™ SPMS651 Metal-Geared Digital Servo

1. 101 oz-in (7.27 kg-cm) @ 6V
2. 15% more torque than the previous ADS-7M servo for improved steering feel
3. Waterproof* * Note: For details on waterproof standards, refer to the instruction manual

• 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™ tyres

• BLX100 2S/3S waterproof* ESC
• 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
• Extended height dirt defenders
• 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

• Length: 514mm (20.24″)
• Width: 356mm (14.02″)
• Height: 201mm (7.91″)
• Weight: 2.84kg (6.25lbs) (without battery)
• Wheelbase: 327mm (12.87″)
• Ground Clearance: 55mm (2.17″)
• Drivetrain: 4WD

• 7.2-11.1v Battery
• Charger
• 4 AA Batteries

Specifications