3D. 2mm spacers, for 2.38mm axle (10/unit.)

Fine axle adjustment with 2mm spacers from 3DSRP for 1/32 slot

When tuning a slot car requires millimetric accuracy, the small details make the difference between running well and running perfectly. The SRP-SE2 spacers from 3DSRP are a preparation component specifically designed for 2.38mm (3/32") axles, the most widely used standard in 1/32 scale. With a thickness of exactly 2mm and manufactured using 3D printing, they offer a lightweight and precise alternative for adjusting the position of crowns, wheels, and other elements of the rear axle.

Function and performance

The main function of these spacers is to laterally displace the elements mounted on the axle: wheels, crowns, or bearings. This allows:

• To centre the crown relative to the motor pinion for a clean engagement without friction.
• To adjust the track width to comply with club technical regulations or improve lateral stability in corners.
• To correct the wheel position within the wheel arch without the need to modify the chassis.

Being 3D printed, the internal diameter is optimised to slide smoothly over the axle without generating play that causes vibration. The finish is clean and uniform, ensuring stable contact with adjacent elements.

Compatibility

These spacers are designed for 2.38mm (3/32") axles, which is the rear axle diameter used in the vast majority of 1/32 scale slot cars. They are compatible with mounts from any brand that uses this axle standard.

Installation and preparation

Their installation is straightforward: they slide onto the axle before mounting the wheels, bearings, or crown, without the need for additional tools. Being a lightweight component, they do not negatively affect the rotational inertia of the assembly, which is relevant when seeking a quick response in acceleration and braking. The pack includes 10 units, sufficient to cover several cars or to have spare material in the work box.

Common mistakes

• Installing more spacers than necessary without measuring the available space can create lateral tension on the axle and hinder free rotation. Always check for play before finalising the installation.
• Confusing the thickness: there are spacers of different thicknesses in the 3DSRP catalogue. Verify that the 2mm thickness corresponds to the adjustment you need before ordering.
• Not cleaning the axle before installation: any residue of grease or dirt can cause the spacers not to seat correctly, generating small eccentricities while running.

Frequently asked questions

Are they compatible with any 1/32 slot car?

They are compatible with all 1/32 slot cars that use 2.38mm (3/32") rear axles, which is the most common standard in this scale. Before using them, confirm the axle diameter of your model.

How many spacers are in the pack?

The SRP-SE2 pack includes 10 units.

How does this 2mm spacer differ from other thicknesses in the 3DSRP catalogue?

Only in thickness. A 2mm spacer generates a greater lateral displacement than a 1mm one, for example. The choice depends on the specific adjustment you need for each installation.

Can I combine spacers of different thicknesses on the same axle?

Yes. It is common to combine spacers of different thicknesses to achieve the exact required measurement, as long as the available space on the axle allows it.

Do they affect the weight of the rolling assembly?

Being manufactured in 3D with lightweight materials, their weight contribution is minimal and does not have a noticeable impact on the dynamic behaviour of the car.

Are they reusable?

Yes. As long as they do not show deformations or visible wear on the internal diameter, they can be disassembled and reused on another axle or preparation.

3DSRP SRP-SE2 axle spacers 2mm for 3/32" (2.38mm) slot car axles — pack of 10 units. Precision 3D-printed spacers designed for 1/32 scale slot cars, ideal for adjusting wheel track width, crown alignment and tyre positioning without adding significant rotational inertia. A practical, lightweight solution for workshop and trackside setups.