MUGEN MRX5 Universal Rear Shaft Set - AM-MRX5-H0277 (spring steel)  [AM-MRX5-H0277]

Rear universal axle shaft in spring-tempered steel

This Arrowmax AM-MRX5-H0277 item is a spring steel rear axle shaft supplied as a pack of 2 pcs for RC-scale drivetrains. It targets universal-style drives and is listed alongside MUGEN MRX5 chassis parts, offering an option where higher elastic recovery and fatigue resistance from spring steel are preferred for repeated loading in on-track tuning and maintenance.

The component is a direct shaft insert for universal joints rather than a full driveshaft assembly. It functions as a replaceable wear part in the rear drivetrain and is chosen when a stiffer, less permanently deforming shaft is required compared with softer steel alternatives, or when matching materials across a rebuild is desirable.

Fitment advice: this shaft fits into the universal drive assembly using the model's original retention method. Verify there is no excessive axial play and confirm free rotation before completing reassembly, and check alignment with the differential and gearbox to reduce the risk of accelerated wear. Inspect surfaces for nicks or burrs after hard sessions.

Choose this spring steel shaft when you need a robust replacement for universal rear drives in MUGEN MRX5 related setups; weigh the trade-offs between spring steel and 7075 aluminium for stiffness, weight, and fatigue life during tuning.