This complete front/rear differential is supplied pre assembled for the ARRMA KRATON 8S and uses 20CrInTiH steel combined with 7075 aluminium components to give increased resistance to wear. It is intended as a direct replacement for factory part #ARA310937 and uses a helical 9T/30T gear pair with a 2.0mm module to keep drive smooth under load. Differential oil must be fitted separately; 100k cSt silicone oil is the suggested viscosity.
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