This 1/5-scale spur gear is an aftermarket replacement suitable for ARRMA Kraton and Outcast platforms, supplied as part number MAKX043TS. The component is manufactured from 20CrMnTi steel and features a Mod 1.0 profile with 43 teeth to match Mod 1.0 driveline geometry on ARRMA large-scale monster trucks. It is intended as a durable service item for the gearbox spur/pinion mesh system.
Fitment instructions: seat the spur onto the gearbox carrier following the chassis service manual, adjust spur and pinion backlash, confirm shim stack and bearing condition, and ensure free, unloaded rotation prior to the first run. Check pinion type and motor coupling clearance for the 43T diameter and replace any damaged fasteners when reassembling.
Functional notes: the hardened 20CrMnTi construction increases wear resistance under high torque, allows drivetrain ratio adjustments when used with different pinions, and provides a rugged replacement option for intensive off-road or stunt usage at 1/5 scale.
ARA310920,ARA311051
Select this 20CrMnTi 43T spur when you need a hardened service replacement for 1/5-scale ARRMA drivetrains, and carry out standard spur and bearing checks during installation.