MST RMX-M Aluminum Upper Arm Set (Red) (2) USB Programming Kit mounted to FireSickle drift tires

mounted to FireSickle drift tires - an ultra low-profile

Hobbywing has designed a motor compatible with a wide range of RC models

New upgrades make it more rugged and driver-friendly than ever

High-quality aluminum construction

MST RMX-M Aluminum Upper Arm Set (Red) (2) USB Programming Kit mounted to FireSickle drift tiresUpper Arm Overview: Max Speed Technologies RMX M Aluminum Upper Arm Set. This is an optional upper arm set intended for the MST RMX M Drift Chassis. About the Upper Arm Set Advantage This upper arm set offers precise adjustability, allowing you to fine tune caster and camber. Optimize your drift chassis for maximum control and flickability. Features: High quality aluminum construction Wide range of tuning adjustments Increases caster adjustment window