Parts/Drivetrain/Axles & axle parts/Injora Aluminum Planet Front Straight Axle Set for Traxxas® TRX-4M® w/Hydraulic Steering (Titanium) (+7mm) (Lay Down Servo)
Injora Aluminum Planet Front Straight Axle Set for Traxxas® TRX-4M® w/Hydraulic Steering (Titanium) (+7mm) (Lay Down Servo)
Injora

Injora Aluminum Planet Front Straight Axle Set for Traxxas® TRX-4M® w/Hydraulic Steering (Titanium) (+7mm) (Lay Down Servo)

Part # INJ4M-121GLF
Where to buy
$77.99
AMain Hobbies
Seen Oct 12, 2026
$77.99Buy
Prices are as last seen at the store; stock is not tracked.

About this part

Axle Overview:

Upgrade your TRX-4M® crawler with the Injora +7mm Planet Straight Axle, featuring Double Joint Shafts and a Scale Hydraulic Ram Steering System. Designed as a complete straight axle upgrade, this set enhances stability, steering precision, and off-road control while delivering a highly realistic scale appearance. Pre-assembled, CNC-machined, and constructed with premium materials to provide smooth and reliable operation for your crawler.

About the Planet Straight Axles with Hydraulic Steering


Scale Hydraulic Ram Steering

The simulated double-ended hydraulic ram steering system delivers an authentic scale look while improving steering control and responsiveness. Paired with brass steering knuckles, it adds beneficial front-end weight for increased traction and more confident turning during technical crawling.

Planet-Inspired Straight Axle Design

Features a CNC-machined, planet-shaped differential housing for exceptional scale realism and precision. Double joint shafts minimize outer wheel vibration at extreme steering angles, while the +7mm extended width improves stability and control. Durable alloy steel helical gears ensure smooth power delivery and long-lasting reliability.

Ultimate Crawling Upgrade

Engineered to enhance performance, durability, and scale authenticity without relying on portal-style ground clearance gains. Lightweight aluminum housings and steering links, combined with brass and steel components, create a balanced upgrade ideal for serious hobbyists and detailed TRX-4M® builds.

Features:

  • Scale hydraulic ram steering system for realistic appearance
  • Planet-shaped differential housings CNC-machined for precision
  • +7mm extended width for added stability
  • Double joint shafts reduce wheel vibration at extreme angles
  • Brass steering knuckles add weight for improved traction
  • Steel helical gears for smooth and durable meshing
  • Pre-assembled for quick and easy installation
  • Aluminum housings and steering links for lightweight strength

Includes:

  • (1) Front +7mm Planet Straight Axle Set
  • (1) Aluminum Steering Links Set
  • (2) Brass Steering Knuckles
  • Assembly Hardware

*Tech Note: Not compatible with stock TRX-4M® chassis due to wider design. Compatible with the Injora universal chassis.

CA Residents Prop 65 Warning WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov Details...

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