MST RMX 4 S PRO

The RMX 4 S PRO is MST’s latest 1/10 RWD drift chassis, engineered with modern MR (Mid Rear) drivetrain balance, adjustable geometry, and pro-level components. With a triple-position motor mount, multi-wheelbase compatibility, TR56 aluminum oil dampers, and a redesigned suspension system, it delivers precise control, high-angle steering, and smooth drifting for beginners and advanced drivers alike.

Features

• Adjustable wheelbase: 257 / 266 / 275 mm
• MR (Mid Rear) drivetrain layout for balanced handling
• Quick-release rear subframe for fast maintenance
• Anti-Torque 4-gear transmission (convertible to 3-gear)
• TR56 aluminum hydraulic dampers included
• Gear differential included (S PRO version)
• Triple-level adjustable motor position
• New short rear suspension arms for better stability
• Torsion-type dual vertical deck for controlled chassis flex
• Floating servo mount for consistent steering response
• New steering arm system with fine Ackermann tuning
• ATK V3 knuckles for large steering angle and fast response
• Adjustable ESC mounting positions (high and low CG)
• Quick-release battery holder for shorty LiPos
• Glass-fiber reinforced nylon components for added rigidity

Specifications

• Scale: 1/10
• Drive Mode: RWD (Mid Rear—MR)
• Wheelbase: 257 / 266 / 275 mm (+3mm / -1mm adjustable)
• Width (Hex-to-Hex):
  • Front: 182 mm
  • Rear: 172 mm
• Caster Angle: 5.5° / 7° adjustable
• Camber Angle: 9.1°
• Bearings: Full ball bearings
• Shocks: TR56 Aluminum Hydraulic Dampers
• Differential: Gear differential (S PRO version)
• Chassis Material: Glass-fiber reinforced nylon