Overview
Eliminate axle and drivetrain slop on 4mm-diameter shafts with the Hot Racing Steel Shim Set in 4x5.4x0.1mm. This 10-pack of precision steel shims is purpose-built for shimming 4mm-diameter axles, gears, and other small drivetrain components — perfect for 1/10 and 1/16 scale RC builds where every bit of efficiency matters.
Shimming is one of the most important — and most overlooked — performance tuning steps in RC. By eliminating end-play slop in the drivetrain, you reduce vibration, increase efficiency, and extend component life. Smart builders shim everything; this is your kit for the 4mm-diameter components in your build.
Key Features
- Precision steel construction
- 10 shims per pack — enough for multiple builds
- Designed for 4mm-diameter axles and components
- 0.1mm thickness for fine tuning
- Reduces slop between drivetrain components
Performance Benefits
- Eliminates end-play slop in 4mm axles and gears
- Reduces vibration and gear chatter
- More efficient power transfer through the drivetrain
- Extends the life of bearings, gears, and seals
- More predictable, consistent vehicle behavior
Usage Notes
Use a feeler gauge or trial fitment to determine the correct number of shims for your application. Stack multiple shims as needed to achieve the right end-play. Note: manufacturing tolerances of approximately +/- 0.02mm may be expected. Inspect for burrs and clean before installation.
Technical Specs
- Material: Steel
- Inner Diameter: 4mm
- Outer Diameter: 5.4mm
- Thickness: 0.1mm
- Tolerance: +/- 0.02mm
- Quantity: 10 shims per pack
What's Included
- Ten (10) 4 x 5.4 x 0.1mm steel shims
Fitment
- Any RC vehicle drivetrain using 4mm-diameter axles or components
- Universal fitment across many 1/10 and 1/16 scale platforms
- Compatible with gearboxes, differentials, and axle housings using 4mm shafts
Summary
The Hot Racing Steel Shim Set in 4x5.4x0.1mm is the precision tuning kit every 4mm-axle RC builder should keep in the toolbox. Eliminate slop, raise efficiency, and bring your drivetrain to its best.
