MUGEN MRX-5 7075 Hard Pulley Set by Arrowmax AM-MRX5-H2201  [AM-MRX5-H2201]

MRX-5 pulley upgrade

This Arrowmax pulley set is an RC-scale replacement part designed for MUGEN MRX-5 chassis use. Made from 7075-class hard aluminum, the set focuses on dimensional stability and wear resistance to keep drivetrain behaviour consistent during setup and track use. The description stays technical and practical, aimed at model builders and racers who adjust transmission feel and mesh.

Installation is straightforward for users familiar with MRX-5 service: check pulley seating and alignment on the spur and pinion, inspect bearing fit, and verify smooth rotation before full reassembly. The component’s role in tuning is to provide a reliable interface in the gearbox area so that gear engagement and slack are easier to diagnose and correct during setup.