Radio Shack 60-440 Installation

XMODS

®

 Street Custom RC 

Metal Bearings Upgrade Kit 

60-440

Upgrade from standard plastic to metal ball bearings for reduced friction, greater precision, and better handling. Before 

installing, turn off your vehicle and controller, then detach the car body.

Hint: Carefully count and set aside screws while disassembling so you can properly re-assemble later.

Upgrading the Metal Bearings for your XMODS

1

Use the lug wrench 

supplied in your Starter Kit 

to detach each of the lug 

nuts and wheels.

2

Remove the screw on the 

knuckle cap (or disk brake if 

you have changed it on your 

older EVO model). Carefully 

unlatch the claw and pull out 

the wheel shaft and knuckle 

cap/disk brake.

3

Remove the bearings on both ends of 

the wheel shaft. Wipe the grease off 

the wheel shaft and install the metal 

bearings. The grease ensures smooth 

operation with the original bearings. 

When you use the metal bearings, 

grease is not necessary.

6

Take out the rear differential gear 

unit, and replace the bearing on 

both ends.

7

Install the differential gear 

assembly into the rear drive 

unit and insert the drive shafts 

at both sides.

If you have installed the All 

Wheel Drive kit, skip to Step 9.

10

Place the center gear on the 

center shaft. Lightly press and 

rotate the center gear so the flat 

side of the center shaft and the 

center gear lock together.

9

If you have installed the 

All Wheel Drive kit:

Detach the center gear 

and shaft and replace the 

small bearing on the center 

shaft with the small metal 

bearing. Tweezers might 

help with this step.

8

Align the rear arm shaft to 

their holes and replace the 

rear drive unit. You might 

find it easier to remove 

the dampers, and reinstall 

them after you attach the 

rear drive unit.

If you have not installed 

the All Wheel Drive kit, 

this completes the procedure.

11

Restore the center shaft and center gear into their 

original positions and rotate so the front center gear 

meshes with the shaft.

12

Align the rear arm shafts 

to matching holes and 

replace the rear drive unit. 

You might find it easier 

to remove the dampers 

first. Reinstall them after 

attaching the rear drive 

unit.

4

Align the drive shaft to the joint cup and 

reassemble the wheel shafts with the drive shaft 

installed into the knuckles. Then, replace the 

knuckle caps/disk brakes and wheels. Unless you 

have installed the All Wheel Drive kit, your front 

wheels do not have a drive shaft/joint cup, so just 

reassemble the front wheel shaft.

5

Remove the two screws 

that hold the rear drive 

unit and detach it. 

Remove the upper screw 

first. Move the rear upper 

arm and rear attachment 

holder out of the way, 

then, remove the lower 

screw.

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Installation Difficulty: ADVANCED

1