Mugen MRX5 Aluminium Brake Post Arm 7075-T6 by Arrowmax AM-MRX5-H2807-T  [AM-MRX5-H2807-T]

Aluminium Brake Post Arm for MRX5

This is an aluminium brake post arm designed for the Mugen MRX5 chassis, machined from 7075-T6 aluminium to provide increased stiffness while keeping mass low. The part is intended as an RC-scale upgrade to replace the stock brake post arm and to offer a firmer mounting point for brake linkages.

Fit and role: the AM-MRX5-H2807-T targets MRX5 users who want tighter brake response and a more predictable chassis feel during braking adjustments. It is a dedicated RC component and should be evaluated on your specific chassis layout prior to installation.

Installation notes: the arm is precision machined; inspect mounting interfaces and use appropriate hardware from your kit or spares box. No machining or modification of the chassis is implied, check fitment before final assembly and tighten fasteners to standard hobby practice.

Practical tuning tips

• Use the arm to test small incremental changes to brake bias rather than large jumps, so you can isolate effects on throttle and corner entry.
• Check linkage geometry after installation to avoid unintended binding or extra preload on the brake mechanism.
• Combine with standard wheel and brake setup adjustments to observe how increased post stiffness changes pedal feel and lap-to-lap consistency.