How to Use Bad Shoppe’s MST RMX 4 GT Build Video

The safest order is simple:

1. Put the MST RMX 4 GT manual where you can see it.
2. Start the Bad Shoppe video on a screen that is easy to pause.
3. Treat the video as a second view of the build, especially when a step is easier to understand in motion.
4. If the manual and the video appear to differ, stop and verify the kit version before tightening anything fully.

YAW’s RTFM page for this kit is here: MST RMX 4 GT manual page. The manuals library identifies the matched kit as the MST RMX 4 GT, RWD, kit 532219R/BK, with maker documents listed there. I have not read those documents for this article, so this piece does not quote part numbers, spacer positions or factory settings from them.

That distinction matters. A real-time build video can show pace, hand position and assembly flow. The manual is where the exact kit instructions live.

Nez0’s Bad Shoppe says the build is “a little over 4 hours long” and can be followed in real time. That is the useful part for a first kit: you can pause at each subassembly rather than skipping straight to the finished chassis.

A practical follow-along rhythm:

1. Watch the start of the step before opening bags or separating parts.
2. Build only the step that is currently on screen and in the manual.
3. Pause before tightening mirrored assemblies so left and right sides match.
4. Compare the finished subassembly to both the video and the manual drawing.
5. Move on only when the part moves freely where it should and stays fixed where it should.

Do not copy any setup choice beyond the build unless the video and the manual clearly show it applies to your kit. A bench build is not the same as a carpet setup, asphalt setup or P-tile setup.

The MST RMX 4 GT is identified in the manual library as an RWD kit. A modern 1/10 RWD drift chassis uses a gyro between the receiver and steering servo. The gyro measures yaw and applies counter-steer correction quickly enough for the car to hold angle at RC scale; it is a normal setup part, not an autopilot.

Before the first track run, the radio work belongs in its own checklist:

1. Bind the transmitter and receiver according to their maker’s instructions.
2. Confirm steering direction and throttle direction with the car safely supported.
3. Set steering endpoints so the servo is not forcing the steering at full lock.
4. Set gyro gain low enough to avoid obvious hunting, then adjust for the surface and layout.
5. Follow the track’s tire rule before judging the car’s behavior.

The Bad Shoppe source says a shakedown video is being filmed soon. Until that appears, do not read this build video as proof of a final gyro, tire, battery position or ESC setup.

Treating the video as the only instruction

A build video is useful because you can see the chassis coming together. It still cannot replace the kit manual, especially for part orientation and version-specific details.

Buying tires before knowing the track rule

RC drift tires are hard plastic compounds matched to the surface, and many tracks use a spec tire. The source does not name a surface or tire. Ask the track before buying PP, ABS, POM or another tire type.

Calling every shiny part an upgrade

The description says the red parts “looked amazing” and calls the car the Red chassis kit. It does not claim a performance change from the red parts.

Expecting setup answers before the shakedown

The builder says the shakedown video is coming soon. Wait for that if you want reported driving behavior from this specific chassis build.

Mixing RWD terms with older AWD counter-steer language

This kit is treated here as a modern RWD drift chassis. Do not describe it with CS ratio language unless a source is specifically talking about an AWD counter-steer chassis.

After the RMX 4 GT is assembled, the next useful step is not a pile of upgrades. It is a controlled first-prep list:

1. Recheck screws and moving parts against the manual.
2. Install and center the radio, receiver, servo and gyro according to their own instructions.
3. Choose tires for the actual track surface and rules.
4. Set the body, ride height and wheel offset so the wheels clear the arches.
5. Make one change at a time once the car reaches the layout.

If Bad Shoppe publishes the shakedown, that will be the better source for how this particular completed build behaves. This first video is strongest as a patient, real-time view of the chassis coming together.