Drivetrain service

Start with the correct reference

Own rear three-gear gearbox removal/disassembly,161264gears and161289bearings. Wear check, repair/replace as needed. No complete basket, torque or undocumented lubrication viscosity.

• Rear gearbox service, PDF p. 9 (opens in a new tab)

  Manufacturer procedure · HPI161267 UG Rear gearbox service

• Rear track driveshaft prerequisite, PDF p. 16 (opens in a new tab)

  Assembly drawing · HPI161267 rear track fitment

  An assembly drawing shows the components; it does not provide a complete service sequence.

Parts, tools and consumables

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 pinion

16 teethStock

Sources

• Source 1: hpiracing.com (opens in a new tab)

Installed spur

46 teethStock

Sources

• Source 1: hpiracing.com (opens in a new tab)

Pinion pitch

Mod 0.4Stock

Sources

• Source 1: hpiracing.com (opens in a new tab)

Spur pitch

Mod 0.4Stock

Sources

• Source 1: hpiracing.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.