Traxxas 82034-4, Owner'S Manual

TRX-4 • 27

REPLACING THE ALL-TERRAIN TRAXX 

WITH WHEELS AND TIRES

Many types of aftermarket tires and wheels can be adapted for 
use on your model. Most will affect the overall width and the 
suspension geometry of the model. The offsets and dimensions 
designed into TRX-4 wheels are intentional; therefore, Traxxas 
cannot recommend the use of other non-Traxxas wheels with 
different specifications. 
When selecting wheels, the inner 
diameter of the inside of the 
wheels must be 38mm or larger to 
accommodate the axle portals. The 
TRX-4’s stub axles are 6mm; this may 
require drilling the center hole of the 
wheel to increase the diameter before 
it will fit. When selecting tires, consider 
the terrain. Rocky surfaces are better 
suited to soft compound tires with 
a tight tread pattern. In loose dirt, harder compound tires with a 
more open tread pattern should perform better. TRX-4 1.9 Canyon 
Trail tires are optimized for all driving surfaces.

Removing the Traxx drive units to install wheels and tires

1.  Remove the two 2.5x12mm cap-head screws from the anti-

rotation bracket on the portal gearbox (A).

2.  Remove the bracket from the portal gearbox (B).
3.  Install two 2.5x10mm cap-head screws 

(not included)

 into the 

portal gearbox (B).

4.  Loosen the stub axle nut on the drive unit using the included 

17mm wheel wrench (C).

5.  Remove the stub axle nut and the M4x0.7mm wheel nut; then, 

remove the drive unit from the stub axle (D).

6.  Repeat for the other three 

drive units.

7.  Install the wheel and tire 

on the stub axle (E).

8.  Install the M4x0.7mm 

wheel nut on the stub axle 
and tighten securely.  
Repeat for the other three  
wheels and tires.

MOTORS AND GEARING

The TRX-4’s Titan

™

 550 Motor has been carefully matched to the 

needs of the TRX-4. The Titan 550 is made to run efficiently at high 
voltage to provide more torque and longer run times. We do not 
recommend converting the TRX-4 to a typical low-voltage setup 
using traditional 540 size motors. While these components will 
physically fit into the TRX-4, the system will not run as efficiently, 
losing power in the form of motor and battery heating. The result 
will be shorter run times, high current draw, and extreme battery 
and motor temperatures. 
The TRX-4 is equipped from the factory with a 45-tooth spur gear 
and 11-tooth pinion gear. TRX-4 has a large range of gearing, 
making it suitable for many different types of applications and 
environments. If you want more acceleration and less top speed, 
use a smaller pinion gear (fewer teeth, higher numerical ratio). The 
overall reduction is the number of turns the motor makes for one 
revolution of the tire. Higher numerical ratios provide more torque, 
lower numerical ratios provide more top speed. 

With the Titan 550 

motor, do not use a pinion gear larger than 11-tooth with the 
stock 45-tooth spur gear. 

38mm

Minimum Wheel 

Inner Diameter

C

A

B

D

2,5 x 12 mm CS

2,5 x 12 mm CS

2,5 x 10 mm CS

2,5 x 10 mm CS

E

M4x0,7mm 

NL

Gearing Compatibility Chart:

The chart below show a full range of 
gear combinations. This does NOT 
imply that these gear combinations 
should be used. Over-gearing 
(bigger pinions, smaller spurs) can 
overheat and damage the motor 
and/or speed control.

Stock factory gearing, 
recommended for most running,  
6 or 7-cell NiMH, 2s LiPo

Does not fit

Not recommended for stock motor

Spur Gear

Pinion Gear

39

45

9

-

79.00

10

-

71.10

11

-

64.64

12

-

59.25

13

-

54.69

14

-

50.79

15

41.08

47.40

16

38.51

44.44

17

36.25

-

18

34.23

-

19

32.43

-

20

30.81

-

21

29.34

-

22

28.01

-

For 3s LiPo running

ADJUSTING YOUR MODEL