ARRMA 1/5 KRATON Front & Rear Complete Differential 30/9T - MAKX0930S/2 by GPM  [MAKX0930S/2]

Complete front and rear diff assembly for ARRMA 1/5 KRATON

This MAKX0930S/2 aftermarket assembly is a drop-in style front and rear differential set designed for ARRMA 1/5 8S platforms. Each differential is supplied fully assembled and uses mixed materials, combining 20CrInTiH hardened steel gears with 7075 aerospace-grade aluminium housings to balance strength and weight for large-scale RC monster trucks.

The gear train uses helical 30T/9T gear pairs with a 2.0mm module to spread mesh loads more evenly than straight-cut teeth while maintaining predictable backlash and noise characteristics for tuning. The unit is sold without differential oil, so you must fill each diff with the silicone oil viscosity you prefer; the source suggests 100k cSt for maximum locking under heavy loads.

Compatibility and fitment follow ARRMA factory layout and this assembly replaces factory part number ARA310937. The set is intended for RC-scale applications only and is suitable where higher torque capacity and more robust gear engagement are required, such as aggressive off-road driving and stunt runs on ARRMA 1/5 platforms.

This product is supplied as a single set containing both front and rear assembled differentials in the 30/9T ratio, ready for installation after adding your chosen differential oil.

Choose this kit when upgrading ARRMA 1/5 trucks that need greater gear strength and consistent differential behavior under heavy loads; set your diff oil to match handling goals before final fitting.