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

Assembled front/rear differential upgrade for ARRMA 1/5

The MAKX0930S/2 aftermarket assembly is supplied as a drop-in front and rear differential set made for ARRMA 1/5 8S platforms. Each diff arrives fully assembled and pairs 20CrInTiH hardened steel gears with 7075 aluminium housings to give a mix of toughness and controlled mass suited to large RC monster truck loads.

Helical 30T/9T gear pairs at 2.0mm module are used to improve load distribution across the mesh compared with straight-cut gears, while keeping backlash predictable for setup. The package is shipped without diff oil; users should fill the diffs with the silicone oil viscosity that matches their traction and handling aims, with 100k cSt suggested for high lock under extreme load.

Fitment follows ARRMA's factory layout and this assembly is a replacement for the OEM part number ARA310937. It is intended for RC-scale use where greater torque handling and stronger gear engagement are required, such as stunt driving and heavy off-road work on ARRMA 1/5 models.

The set contains both front and rear assembled differentials in the 30/9T ratio and is ready to install once the chosen differential oil is added.

Install this upgrade when your ARRMA 1/5 needs improved gear durability and consistent diff performance under heavy use, and pick diff oil to match your driving style before fitting.