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Injora +7mm Planet Axles with Double Joint Shafts & Scale Hydraulic (Injora 4M-121GLFR | INJ4M-121GLFR)

Model: Injora 4M-121GLFR
Dist. #: INJ4M-121GLFR   SKU: INJ4M-121GLFR

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Shipping: In Stock For Shipping
Store Pickup:

South Jordan, UT
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Price:  $89.99

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Updated on Dec 10, 2025 03:56:40 PM

INJORA +7mm Planet Axles with Double Joint Shafts & Scale Hydraulic Steering for 1/18 TRX4M Upgrade

Note:

Not compatible with TRX4M stock chassis as the lay lown servo mount is wider than stock. Compatible with INJORA universal chassis.
Steering knuckles and double joint shafts are not compatible with the TRX4M stock axle housing.

Compatible with INJORA INJS2065, INJS11, and TRX4M stock servos.


Features:

Scale Hydraulic Steering System: Simulated double-ended hydraulic ram for a realistic scale appearance

Planet-Inspired Axle Design: Planet-shaped differential housing, CNC-machined for maximum realism and precision

Double Joint Shafts: Minimize outer wheel vibration when turning at extreme angles

Brass Steering Knuckles: Add weight to the front axle for enhanced traction and climbing ability

+7mm Extended Width: Widens each side by +7mm to improve stability and control

12T & 24T Alloy Steel Helical Gears: Built for smooth meshing and outstanding durability


Specifications:

Housing Material: Aluminum

Steering Links Material:  Aluminum

Steering Knuckles Material: Brass

Axle Gear Material: 20CrMo Alloy Steel

Gear Ratio: 24/12=2:1 (Same as Stock)

Shaft Type: Double Joint Shaft (Stainless Steel)

Maximum Steering Angle: Approx. 52° 

Front Axle Weight: 92g

Rear Axle Weight: 38g

Overall Length: 129.2mm


- Injora +7mm Planet Axles with Double Joint Shafts & Scale Hydraulic

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