Traxxas TRX-4 Tactical Unit RTR

Outfitted for Adventure and Ready For Fun!

The Traxxas TRX-4 Tactical Unit is a rapid-response vehicle designed to charge into practically any situation, emerging unscathed and ready for the next fun adventure. From broken concrete and back-alley climbing, to mud, rocks, and streams, this all-terrain machine easily conquers it all. The Tactical Unit shares the highly innovative features and capability of the TRX-4 Scale and Trail Crawler, but includes a rugged, lightweight tactical body for increased agility. Where other trucks fear to go, the Tactical Unit charges full-steam ahead!



The Traxxas TRX-4 Tactical Unit is a rapid-response vehicle designed to charge into practically any situation, ready for fun and adventure. Its lightweight body offers high-speed agility and superior technical crawling. Where other trucks fear to go, the Tactical Unit charges ahead full throttle!

The secret to the Tactical Unit’s extreme all-terrain capability lies underneath its tough camouflaged body. Exclusive portal axles deliver maximum ground clearance and virtually eliminate torque twist. Remotely-actuated front and rear differentials unlock for all-out speed and lock for rock-gripping traction on treacherous surfaces. The high/low range transmission transforms the Titan motor’s power into incredible torque in low gear or blazing speed in high gear. Built the Traxxas way, the Tactical Unit is tough, powerful, and ready to take on your wildest adventures.

Feature List:

• Tough Night-Camo Body
• Lighter weight to lower CG and increase agility
• Rugged fender flares
• Front bumper with tow hooks and replica winch
• Rear bumper with scale accessories and functional spare tire
• Full Nylon composite wheel wells and floor pans
• Trail-tuned XL-5 HV Waterproof Electronic Speed Control
• Fully waterproof design

Vehicle Specs:

• Length: 586 mm
• Front Track: 249 mm
• Rear Track: 249 mm
• Ground Clearance: 80 mm
• Weight: 3.129 kg
• Height: 252 mm
• Wheelbase: 324 mm
• Approach Angle: 53.17°
• Departure Angle: 41.67°
• Breakover Angle: 56.97°
• Front Shock Length: 90 mm
• Rear Shock Length: 90 mm
• Front Wheels: 1.9 x 1.02" (49 x 26mm)
• Rear Wheels: 1.9 x 1.02" (49 x 26 mm)
• Front Tires: 4.64 x 1.89" (118 x 48 mm)
• Rear Tires: 4.64 x 1.89" (118 x 48 mm)
• Hex Size: 12 mm
• Speed Control: XL-5 HV
• Motor (electric): 21T Reverse Rotation
• Transmission: 2-speed Hi-Lo, Remote Shifting
• Gear Pitch: 32P
• Differential Type: 4 Gear, Remote Locking
• Chassis Structure / Material: Steel Ladder Frame with Nylon Composite Crossmembers
• Brake Type: Electronic “Hill Hold”
• Drive System: Shaft Driven 4WD
• Steering: Chassis Mounted Servo
• Servo: 2075X Metal Gear
• Transmitter: TQi 2.4 GHz 4-Channel Transmitter
• Receiver: 6533
• Skill Level: 2
• Battery Tray: L158.75 x W47 x H23/26mm

Motor Specs:

• Type: High-torque brushed motor
• Size: 550
• Weight: 390g (13.76oz)
• Size: 78 mm (overall length), 57 mm (can length) & 38.9 mm (diameter)
• Turns: 21T reverse rotation
• Voltage: 16.8V

ESC Specs:

• Input Voltage: 6–7 Cells NiMH, 2–3S LiPo
• Case Size: W31.2 x D55.4 x H26.4 mm
• Weight: 74 g
• Motor Limit: 21-turns (550 size)
• On Resistance Forward: 0.004 Ohms
• On Resistance Reverse: 0.004 Ohms
• Peak Current - Forward: 100A
• Peak Current - Reverse: 100A
• Braking Current: 60A
• Continuous Current: 18A
• BEC Voltage: 6.0 VDC
• BEC Current: 1A
• Power Wire: 14 Gauge / 127 mm
• Input Harness Wire: 26 Gauge / 368 mm
• Transistor Type: MOSFET
• PWM Frequency: 1700Hz
• Low Voltage Detection (LVD): 2-Stage indicators, switchable (on or off)
• Thermal Protection: Thermal Shutdown
• Single-button setup: Yes, Traxxas EZ-Set®

Profile selection:

• Sport Mode: 100% FWD, 100% brakes, 100% REV
• Race Mode: 100% FWD, 100% brakes, no REV
• Training Mode:* 50% FWD, 100% brakes, 50% REV
• Trail Mode: 100% FWD, 100% Brake, 100% REV, Trail-Tuned Brake on Neutral
• Crawl Mode: 100% FWD, 100% Instant REV, 100% Brake on Neutral

* Patented


Five drive profiles:

• Sport Mode — forward / brake / reverse
• Race Mode — forward / brake / no reverse
• Training Mode™ — 50% forward / 100% brake / 50% reverse (patented)
• Trail Mode — forward / brake / reverse / with trail-tuned drag brake in neutral
• Crawl Mode — forward / instant reverse - no neutral with 100% hill holding brake

• Traxxas EZ-Set® one-button setup
• Large, efficient heat sink
• Wide voltage latitude 6–7 cell NiMH (7.2–8.4V) and 2–3S LiPo (7.4–11.1V)
• Two stage low voltage protection (LVD)

Motor:

• Powerful Titan™ 21T reverse rotation motor with internal cooling fan
• Precision, preset gear mesh adjustments
• Motor retention separate from gear mesh

Portal Axles:

• Increase ground clearance (3.14”)
• Eliminate torque twist

Steel gears:

• Improve axle geometry and reduce strain on driveshafts

Rigid Steel Frame:

• 1.5 mm thick steel frame rails increase torsional rigidty
• Innovative design allows four wheelbase positions (300 mm, 312 mm, 324 mm, 336 mm)
• Adjustable rear shock tower positions for SWB and LWB configurations
• Bumpers adjust fore and aft
• Rugged rock rails adjust for width
• Wire routing clips integrated into frame rails

Drivetrain:

• Full-time shaft driven 4-wheel drive
• Tough 6mm stub axles
• Steel front CVDs
• Hardened steel rear axle shafts
• Remote locking steel gear differentials with cable-actuation
• Steel gear transfer case

Innovative Battery Compartment:

• Hinged battery strap allows quick and easy battery access
• No pins to lose
• Accommodates different height batteries
• Accepts full-size long battery packs
• Integrated compartment accepts smaller 1/16 scale batteries (with optional strap)

Transmission:

• Two speed high/low range with remote shifting
• All metal gears
• Dual horizontal shafts
• Twin friction plate slipper clutch
• Easily removed for servicing

Steering:

• Chassis mounted 2075X metal gear digital servo
• Superior 45° steering angle
• Direct steering (no servo saver)
• Steering geometry corrected for bump steer

Suspension:

• Front — 3 link with panhard
• Rear — Triangulated 4 link
• Heavy-duty rod ends with steel hollow balls
• 5 mm diameter steel link rods with 4 mm threaded ends

Aluminum GTS Shocks:

• Oil-filled coilover GTS shocks exclusive to TRX-4 chassis
• Silver-anodized aluminum bodies
• Threaded bodies with collars easily adjust ride height
• Silky smooth damping for the toughest trails
• O-ring cap seal and dual X-ring shaft seals

Wheels and Tires:

• 1.9" Canyon Trail tires with trail-tuned foam inserts
• Pre-glued and mounted to tough black scale wheels
• Trail tuned S1 rubber compound
• 12 mm steel hex

Transmitter:

• TQi™ 2.4GHz 4-channel transmitter
• Traxxas Link enabled
• Telemetry ready #6533 5-channel micro receiver with failsafe
• Automatically stores and loads settings for up to 30 Traxxas Link enabled models
• Exclusive Cruise Control feature for extended trail driving
• Adjustable steering and throttle sensitivity (exponential)
• Adjustable steering and throttle endpoints
• High 13ms frame rate and near-zero latency for responsive control

• Patented O-Ring sealed watertight receiver box keeps the micro receiver dry
• Sealed Ball Bearings
• Hex hardware with rust-resistant black oxide coating

What’s in the Box:

• TRX-4 Tactical Unit, Ready-To-Race® model
• XL-5 HV waterproof electronic speed control
• Titan™ 21T reverse rotation motor
• TQi™ 2.4GHz radio system with cruise control
• High quality maintenance tools

What You’ll Need:

• Batteries: Tactical Unit accepts a wide variety of NiMH (4–7 cell) and LiPo (2s–3s) batteries.
• Charger: Traxxas EZ-Peak Live charger is recommended for easy and fast charging performance (model #2971).
• AA Alkaline Batteries: Four AA alkaline batteries for the transmitter.