This precision medium carbon steel 13T pinion and 43T spur pairing is produced for like-for-like replacement of the centre transmission gearbox in LOSI LMT 4WD solid axle monster trucks. Components are dimensioned to replicate stock gear geometry and ensure predictable mesh and shaft engagement.
Engineered for durability and serviceability, the set is intended to restore correct backlash and reduce wear-related noise in the centre gearbox. During installation confirm bearing seating, axial clearance, and shaft concentricity to achieve the specified tooth contact pattern.
LOS242040+LOS242043
For workshop-level centre gearbox repairs on LOSI LMT platforms, this medium carbon steel 13T/43T kit provides consistent fitment and predictable mesh outcomes when bearings and shaft tolerances are verified during assembly.