LOSI LMT 4WD Solid Axle Monster Truck 4140 Steel + 7075 Alloy Front/Rear Complete Differential 13/43T 1.0 Mod by GPM LMT1343S  [LMT1343S]

Complete front/rear differential for LOSI LMT

This GPM LMT1343S front and rear complete differential is an aftermarket replacement built for LOSI LMT solid axle monster truck kits and RTR models. The assemblies come pre-assembled using 4140 steel and 7075 alloy components and include the internal helical gears and a 13T pinion gear. The unit is intended for RC-scale drivetrain repair, maintenance, and tuning where a direct-fit replacement of LOSI factory differentials is required.

Key mechanical notes: the internal helical gear set uses a 10T driving gear paired with a 43T driven gear at a 1.0 module, matching the original LOSI gear geometry. The housings and load-bearing components are supplied in 4140 steel and 7075 alloy to balance wear resistance and weight. The product is supplied without differential oil, so oil must be added during installation following the LOSI manual or established maintenance practice.

Installation and service tips: the assemblies ship pre-assembled but final fit should be checked against your chassis before final torque. GPM recommends buying two sets when replacing both front and rear assemblies to ensure matched wear and gear mesh across the drivetrain. Use a medium-strength thread locker on external fasteners to prevent loosening under vibration, and follow LOSI torque specs where provided. If gear lash adjustment is required, set mesh carefully to avoid premature wear.

For LOSI LMT owners needing a direct replacement or an upgrade to factory differentials, this GPM assembly provides pre-assembled front and rear units using 4140 steel and 7075 alloy; follow LOSI guidance for oil fill and final installation torque, and consider replacing both ends to maintain drivetrain balance.