TRX4 Brass, can the cheap stuff be any good? Is it really that bad

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TSM For Traxxas TRX4

Traxxas TRX4 Front Hot Racing and TREAL Aluminum and Brass Upgrades

SHOULD YOU WEIGHT YOUR TRX-4?? Yeah Racing Metal Axle & Brass Upgrade Sets

Yeah Racing Traxxas TRX-4 Brass C Hubs (2) - Small Addictions RC