ARRMA 1/5 Compatible Spur Gear 39T/43T/47T MAKX039TS by GPM  [MAKX039TS]

High-Strength Spur Gears for ARRMA 1/5 Vehicles

This aftermarket spur gear set is designed as a direct-use replacement for ARRMA 1/5 platforms. The MAKX039TS items are manufactured from 20CrMnTi steel and are supplied in three tooth counts—39T, 43T and 47T—with a 1.0 Mod pitch. These steel parts are intended for applications where increased wear resistance and dimensional stability are required under load.

Fitment and selection: the spur gears are compatible with the ARRMA 1/5 Kraton and Outcast models listed in the compatibility section below. Choose the tooth count to tune final drive characteristics—lower counts boost acceleration, higher counts favour top speed. Confirm the 1.0 Mod pitch and tooth count match your pinion and gearbox prior to fitting.

Installation guidance: verify mesh with the motor pinion, inspect mating surfaces and bearings for wear, and set a consistent backlash. Apply appropriate gear grease to the tooth faces and avoid over-tightening fasteners that could distort the carrier or misalign the mesh. Run the gearbox by hand to confirm smooth rotation before final assembly.

Confirm tooth count and M1.0 pitch before fitting, and use proper mesh setup techniques to ensure dependable gearbox operation under demanding RC use.