TRX-82016-4 Traxxas TRX-4® Unassembled Kit: 4WD Chassis Trail vehicle with TQi 2.4GHz Radio System

TRX-4 Crawler Kit

Easy-to-Follow Assembly Manual

• Full-color assembly manual with clear and helpful illustrations.
• True-to-scale part illustrations and ruler charts for precise assembly.
• Includes assembly tips for a smooth building process.

Trail-Tuned XL-5™ HV Waterproof Electronic Speed Control

• Fully waterproof design for all-weather driving.
• Features 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 for quick configuration.
• Includes a large, efficient heat sink.
• Wide voltage latitude: 6–7 cell NiMH (7.2–8.4 V) and 2–3s LiPo (7.4–11.1 V).
• Two-stage low voltage protection (LVD) for battery safety.

Powerful Titan® 21T Reverse Rotation Motor

• Equipped with an internal cooling fan for optimal performance.
• Precise, preset gear mesh adjustments ensure smooth operation.
• Motor retention separate from gear mesh for added reliability.

Portal Axles

• Increase ground clearance (3.14″) for better off-road capability.
• Eliminate torque twist for improved handling.
• Steel gears for durability.
• Improve axle geometry and reduce strain on driveshafts.

TQi™ 2.4 GHz Radio System

• 4-channel transmitter and 5-channel micro receiver (6533) with fail-safe security.
• Integrated telemetry ports for enhanced functionality.
• Compatible with optional TQi Traxxas Link Wireless Module (6511) to access full Traxxas Link app features (sold separately).
• 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.
• Patented waterproof receiver box with easy-access plug.

Rigid Steel Frame

• 1.5 mm thick steel frame rails for increased torsional rigidity.
• 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 for customization.
• Rugged rock rails adjust for width.
• Integrated wire routing clips for a clean setup.

Innovative Battery Compartment

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

Drivetrain

• Full-time shaft-driven 4-wheel drive for reliable power delivery.
• Tough 6 mm stub axles and steel front CV driveshafts.
• Hardened steel rear axle shafts for durability.
• Remote locking steel gear differentials with cable actuation.
• Steel gear transfer case for long-lasting performance.

Transmission

• Two-speed high/low range with remote shifting for versatile driving.
• Dual horizontal shafts and twin friction plate slipper clutch.
• Easily removed for convenient servicing.

Steering

• Chassis-mounted 2075X metal gear digital servo for precise control.
• Superior 45° steering angle for tight turns.
• Direct steering (no servo saver) for responsive handling.
• Corrected steering geometry to reduce bump steer.

Suspension

• Front suspension: 3-link with panhard.
• Rear suspension: 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 for smooth performance.
• Silver-anodized aluminum bodies for durability.
• Threaded bodies with collars for easy ride height adjustment.
• Silky smooth damping for tackling challenging trails.
• O-ring cap seal and dual X-ring shaft seals for leak prevention.

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 for superior grip.
• 12 mm steel hex for secure mounting.

Additional Features

• Sealed ball bearings for smooth operation.
• Hex hardware with rust-resistant black oxide coating.
  
  Requires battery and charger (sold separately).
  Choose your own body to complete (sold separately).