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

Heavy-Duty Spur Gears for ARRMA 1/5 Trucks

This aftermarket spur gear kit is supplied as a direct RC replacement for ARRMA 1/5 platforms. Units in the MAKX039TS range are produced in 20CrMnTi steel and offered in 39T, 43T, and 47T tooth counts with a 1.0 Mod pitch. The steel construction is selected to withstand higher wear and maintain geometry under repeated loads.

Fitment notes: the gears are intended for use on the ARRMA 1/5 Kraton and Outcast models referenced below. Pick the tooth count to alter gear ratios for performance testing—smaller counts favour quicker acceleration, larger counts favour higher top speed. Always verify the M1.0 pitch and tooth count compatibility with your pinion and gearbox prior to installation.

Assembly guidance: verify correct pinion mesh, check mating surfaces and bearings for wear or play, and set consistent backlash. Lubricate gear teeth appropriately and avoid over-tightening screws that could distort the carrier or affect alignment. Rotate the gearbox manually to check for smooth engagement before applying power.

Double-check tooth count and M1.0 pitch against your pinion and gearbox, and use established gear-mesh procedures to secure reliable performance in demanding RC use.