Engineered from 40Cr carbon steel, this 0.5-module 61-tooth spur is sized for 1/16 ARRMA Quake Grom and Gorgon Grom 4x4 brushed monster trucks. It serves as a direct replacement for the factory 61T large spur (part ARA-2592) and is intended for routine service, worn part replacement, or measured gear ratio adjustments.
Installation notes: pair the spur with a 0.5-module pinion, confirm precise gear mesh and acceptable backlash before operation, and inspect bearings and differential internals while the gearbox is accessible. Use a light application of gear grease on the spur contact face and correct shim placement to minimise noise and maximise service life.
ARA-2592