Brake disc

The detail that makes a difference in your 1/32 wheel hubs

The SP029904 brake disc from Sloting Plus is a detailing part made of plastic, designed to complete or replace the wheel hubs of your slot cars in 1/32 scale. With very precise dimensions — an outer diameter of 12 mm, a central hole of 2.9 mm, and only 0.20 mm thick — it fits perfectly and adds that realistic touch that the most demanding enthusiasts appreciate in every build.

Technical specifications

• Material: plastic
• Outer diameter: 12 mm
• Diameter of the central hole: 2.9 mm
• Thickness: 0.20 mm
• Weight per unit: 0.025 g
• Contents: bag with 4 units

Function and performance

Although in a slot car the brake disc does not serve a real mechanical function, its presence in the wheel hubs is crucial for the visual finish of the assembly. Sloting Plus pays special attention to ensuring that these parts accurately reproduce the geometry of a real disc, with the central hole well centred and a uniform thickness that facilitates assembly without forcing the fit.

The low weight — 0.025 g per unit — ensures that incorporating these discs does not alter the balance of the car or affect its performance on track, something that can make a difference in club competition.

Assembly and preparation

Assembly is straightforward: the disc is placed on the wheel hub before securing the wheel, centring it with the 2.9 mm hole over the axle or the pivot of the wheel hub itself. Given its reduced thickness, it is advisable to handle it with tweezers to avoid deformation during the process. Coming in a pack of 4 units, you have a complete set for all four corners of the car.

Compatibility

This part is designed to be used with the wheel hubs from the Sloting Plus range in 1/32 scale. Before ordering, check the diameter of the hole in your wheel hubs: the correct fit is for pivots or axles that fit into 2.9 mm. If you have doubts about compatibility with a specific wheel hub, consult the reference of the wheel or the wheel hub in the Sloting Plus catalogue.

Common mistakes

• Trying to mount the disc without tweezers: its thinness (0.20 mm) makes it prone to bending with fingers.
• Confusing the diameter of the hole with that of other discs of different references; always verify the measurement of 2.9 mm before mounting.
• Underestimating the added weight when calculating balance: although minimal, in competition setups, every detail counts.

Frequently asked questions

How many units are included in the bag?

Each bag contains 4 brake discs, enough to equip all four wheels of a car.

Does the brake disc have a real mechanical function in the slot car?

No. Its function is purely aesthetic: it reproduces the appearance of a real brake disc inside the wheel hub, adding detail and realism to the assembly.

Which Sloting Plus wheel hubs is it compatible with?

It is designed for 1/32 scale wheel hubs whose pivot or axle accommodates the 2.9 mm hole of this part. Check the Sloting Plus catalogue or the reference of your wheel hub to confirm exact compatibility.

Does adding these discs affect the balance of the car?

The weight per unit is only 0.025 g, so the impact on balance is practically imperceptible. Nevertheless, in high competition setups, it is good practice to take it into account.

Can it be painted or lacquered?

Being made of plastic, it can be painted with paints compatible with this material. If you want to give it a more realistic metallic appearance, a light application of acrylic paint with an airbrush (for example, Vallejo or Tamiya) is the most common option among modellers.

The Sloting Plus SP029904 brake disc is a 1/32 scale detail part designed to complement wheel hubs with a realistic finish. Made from plastic, it measures 12 mm outer diameter, 2.9 mm center hole and just 0.20 mm thickness, weighing 0.025 g each. Sold in a pack of 4 units, it is a must-have spare for slot car enthusiasts focused on detail and presentation in 1/32 scale racing.