Engineered for the AXIAL RR10 Bomber platform, the GPM RR237SA main drive shaft set uses steel elements for strength alongside aluminium components to limit added mass. The front shaft adjusts between 147mm and 157mm while the rear shaft covers 122mm to 130mm, allowing precise length selection during setup. A steel wire ring secures the mounting screws to minimise fastener loss and support continued drivetrain serviceability.