The GPM MKV61034S is a fully assembled front or rear differential designed with 20CRMNTI steel components and 7075 aerospace-grade aluminum alloy housing for enhanced wear resistance. It employs high-speed helical gears 10T and 34T with a module of 1.3mm and is compatible with a 29mm differential housing, providing a sturdy upgrade path without altering ARRMA drivetrain geometry. Note: Differential oil is not included and must be filled according to the ARRMA manual.