Mugen MRX5 20T Pulley 7075 Hard Coated Upgrade by Arrowmax AM-MRX5-H0251B  [AM-MRX5-H0251B]

Belt pulley crafted for MRX5 tuning

The Arrowmax AM-MRX5-H0251B is an RC replacement pulley for the Mugen MRX5 belt configuration. Machined from 7075 T6 aluminium and finished with a hard coating, it gives a robust, low-mass alternative for users wanting improved spool response without changing shaft geometry.

Design notes: side apertures let debris escape from the belt interface, cutting down on material buildup at the friction surface. The hard coat raises abrasion resistance and the 7075 alloy keeps weight down, helping the pulley accelerate faster during throttle changes. It fits using the MRX5 chassis' original pulley retention, so no adapters are required.

Practical use: install this pulley to lower rotational inertia against heavier materials, maintain steady belt contact in varied running conditions, and simplify cleaning thanks to the hole pattern.