Traxxas TRX-4 Chassis Kit 1/10 Crawler (No Battery & Charger)

Traxxas TRX-4 Chassis Kit supplies the ready-to-build 1/10 crawler foundation for hobbyists who want to learn assembly, tune suspension, or create a custom trail rig. The kit arrives with drivetrain components, portal axles, a transmitter and the speed control so you can focus on picking a body and finishing touches; battery, charger and body are not included.

Key Features

• True-to-scale part illustrations and ruler charts make identifying parts and measuring during the build straightforward.
• Color-coded, bagged sections with clear assembly tips walk first-time builders step-by-step through each stage.
• All-inclusive chassis kit supplies the drivetrain, radio electronics and hardware required to assemble a working TRX-4 chassis while excluding battery, charger and body.
• Full-time shaft-driven 4-wheel drive delivers smooth, consistent power for slow, technical trail work.
• Hardened steel front and rear drive shafts resist bending and wear during heavy use and recovery attempts.
• Remote-locking geared differentials with cable actuation let you lock or unlock the front and rear diffs from the transmitter for instant traction control.
• Steering geometry supports up to a 45-degree wheel angle for tight turns and better line tracing on obstacles.
• Three-link front suspension with a panhard bar balances articulation with predictable steering response.
• Triangulated rear 4-link suspension provides stable axle control when climbing uneven terrain.
• Coilover shocks tuned specifically for the TRX-4 chassis absorb impacts and control body motion for improved traction.
• Durable gear transfer case manages drivetrain loads and organizes power delivery between front and rear.
• Hinged battery strap gives quick, tool-free access to the battery compartment for fast swaps on the trail.
• Included TQi 4-channel transmitter gives direct control over steering, throttle and the remote functions like locking diffs.
• Titan 21T brushed motor provides reliable torque suited to crawling speeds and technical maneuvers.
• Trail-Tunes XL-5 HV electronic speed control is included and supports compatible high-performance battery packs for effective motor control.
• Portal axle assemblies raise ground clearance compared with straight axles and help reduce torque twist under load.
• 1.5mm thick steel frame rails form a solid backbone that resists flex and supports heavy-duty setups.
• Innovative chassis layout allows separate wheelbase adjustments so you can dial in balance and stance for different bodies and terrain.

Technical Specifications

• Length: 20.57"
• Width: 9.78"
• Ground Clearance: 3.14"
• Height: 10.47"
• Weight: 6.42 lbs
• Wheelbase: Adjustable
• Tire Diameter: 4.64"
• Approach Angle: 63.82°
• Departure Angle: 44.22°
• Breakover Angle: 59°

What's Included

• Trail-Tunes XL-5 HV electronic speed control
• TQi 4-channel transmitter
• Titan 21T brushed motor
• Portal axle assemblies
• Hardened front and rear drive shafts
• Remote-locking geared differentials with cable-actuation
• Coilover shocks specific to TRX-4
• Gear transfer case and full drivetrain components
• 1.5mm thick frame rails and all chassis hardware
• Hinged battery strap and adjustable wheelbase hardware
• Color-coded, bagged instruction manual

Needed to Complete

• 7-cell NiMH or 2–3s Traxxas-compatible LiPo battery
• Charger for your chosen battery
• (4) AA batteries for the transmitter

Why Choose This Kit

The Traxxas TRX-4 Chassis Kit is ideal if you want a hands-on project that leaves room for upgrades and body choice. It’s a solid learning platform for new builders and a flexible base for experienced hobbyists who want to tune suspension, swap axles, or test different wheelbase setups before finalizing a trail-ready crawler.