Drivetrain service

TLR03015 electric assembly kit; owner-selected electronics

Start with the correct reference

Exact laydown transmission, differential-height inserts and HDS slipper assembly. Raised differential setup requires the stated rear hubs. Stand-up and four-gear conversions are separate optional builds.

Height inserts, gearbox and slipper stack, PDF pp. 25-28 (opens in a new tab)
Assembly drawing · TLR03015 exact 22T 4.0 multilingual assembly manual
An assembly drawing shows the components; it does not provide a complete service sequence.

Parts, tools and consumables

Listed in the reference

Correct raised rear hubs for raised differential configurationprerequisite
Only when choosing+3.5mm differential height; not the standard kit height.
Requirement source, PDF p. 25 (opens in a new tab)

Part links open an exact-model OEM listing. Quantities, reused hardware and condition-dependent replacements may need checking in the manual. A listed part is not an instruction to replace it.

Setup specifications

Installed spur: 82 teethStock
Sources
Source 1: horizonhobby.com (opens in a new tab)
Source 2: horizonhobby.com (opens in a new tab)
Source 3: horizonhobby.com (opens in a new tab)
Slipper clutch: YesStock
Sources
Source 1: manualslib.com (opens in a new tab)
Spur pitch: 48PStock
Sources
Source 1: horizonhobby.com (opens in a new tab)
Source 2: horizonhobby.com (opens in a new tab)
Source 3: horizonhobby.com (opens in a new tab)

Keep the axle positions and original units shown. Values describe the cited configuration. Replacement-derived and community figures keep their stated basis.