Traxxas 82216-4 TRX-4 Crawler Kit with Clipless Body Mounts
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The Traxxas® 82216-4 TRX-4 Crawler Kit with Clipless Body Mounts is the builder’s version of Traxxas’s flagship scale rock crawler platform. The TRX-4 is one of the most capable and feature-rich scale crawlers available — built around a steel ladder frame chassis, portal axles, 4-link suspension front and rear, locking front and rear differentials, and a 2-speed transmission. The kit format allows you to choose your own electronics, motor, ESC, servo, and radio system, giving full control over the build spec and performance level. Clipless body mounts provide a clean, tool-free body removal system for easy access to electronics and drivetrain components. The TRX-4 platform supports a wide range of licensed scale bodies and is backed by extensive Traxxas parts and upgrade availability.
MODEL 82216-4: Unassembled TRX-4® Chassis Kit, TQi™ 2.4 GHz 4-channel radio system, XL-5™ HV electronic speed control, and Titan® 21T 550 motor. Requires: body, battery, and charger.
Key Features
- Part Number: 82216-4
- Traxxas TRX-4 scale rock crawler — kit version
- Clipless body mounts for tool-free body removal
- Steel ladder frame chassis
- Portal axles front and rear for maximum ground clearance
- 4-link suspension front and rear
- Locking front and rear differentials
- 2-speed transmission
- Requires electronics: motor, ESC, servo, receiver, battery, and charger
Compatibility
- Requires separately purchased electronics — motor, ESC, servo, receiver, battery, and charger. Compatible with Traxxas TRX-4 bodies, parts, and upgrades. Verify electronics compatibility with TRX-4 platform specifications before purchasing.
Benefits
- Kit format gives full control over electronics spec and performance level
- Portal axles deliver exceptional ground clearance for technical rock crawling
- Locking differentials provide maximum traction on challenging terrain
- 2-speed transmission for low-range crawling and higher-speed trail driving
- Clipless body mounts for fast, tool-free body removal and electronics access
- Extensive Traxxas parts, bodies, and upgrade availability for long-term buildability
- Steel ladder frame for durability and scale realism
Quick Take
Want to build your own TRX-4 your way? The 82216-4 kit gives you the full TRX-4 platform — portal axles, locking diffs, 4-link suspension, 2-speed trans, and clipless body mounts — ready for your choice of electronics.
- Easy to follow full-color assembly manual
- True-to-scale part illustrations and ruler charts
- Helpful assembly tips and clear illustrations
- Trail-tuned XL-5™ HV Waterproof Electronic Speed Control
- Fully waterproof design
- 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 (7.2–8.4 V) and 2–3s LiPo (7.4–11.1 V)
- Two stage low voltage protection (LVD)
- Powerful Titan® 21T reverse rotation motor
- Internal cooling fan
- Precise, 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
- TQi™ 2.4 GHz Radio System
- 4-channel transmitter
- 5-channel micro receiver (6533) with fail-safe security and integrated telemetry ports
- Compatible with optional TQi Traxxas Link Wireless Module (6511) to access full Traxxas Link app functionality (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 increase 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
- Rugged rock rails adjust for width
- Wire routing clips integrated into frame rails
- 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)
- Driveline
- Full-time shaft driven 4-wheel drive
- Tough 6 mm stub axles
- Steel front CV driveshafts
- Hardened steel rear axle shafts
- Remote locking steel gear differentials with cable-actuation
- Steel gear transfer case
- Transmission
- Two speed high/low range with remote shifting
- 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
- 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
- Sealed Ball Bearings
- Hex hardware with Rust-Resistant Black Oxide Coating
- Requires Battery and Charger (Sold Separately)