The foam ring your UFO and Air System wheels need
The Type-1 Foam Kit (ref. SP029951) from Sloting Plus is a specific spare part designed to meet the mounting and performance needs of the UFO Universal and UFO-R wheels from the brand itself, with the added advantage of being compatible with double-flange wheels from other brands, commonly known in the slot racing community as Air System wheels.
Function and performance
The foam rings act as the interface between the wheel and the tyre, absorbing irregularities, adding lightness to the wheel assembly, and contributing to a more uniform contact patch on the track. A correct assembly with the appropriate foam makes a difference in both grip and dynamic balance, especially in fast corners where any vibration penalises lap time.
Compatibility
- UFO Universal wheels from Sloting Plus.
- UFO-R wheels from Sloting Plus.
- Double-flange wheels of Air System type from other brands.
If you are already using the UFO family from Sloting Plus, this is the reference foam kit. No adaptation or forcing of any component is necessary: the fit is direct.
Assembly and preparation
The assembly process is straightforward but should be done calmly to avoid deforming the foam. Sloting Plus has published a how-to video that shows the step-by-step procedure, highly recommended if it is your first time working with this type of ring. Once fitted, it is common to sand the tyres already mounted on the wheel to achieve a perfectly concentric circumference and maximise contact with the track.
Common mistakes
- Using foam of the wrong type: not all foams are interchangeable between wheel families. Always check that the type matches your wheel before assembly.
- Forcing the assembly: if the foam does not fit smoothly, check that the wheel is clean and free of remnants of previous foam.
- Not sanding after assembly: installing the tyre without concentricity reduces performance and can cause vibration.
Frequently asked questions
Are these foams compatible with wheels from brands other than Sloting Plus?
Yes, as long as the wheel is of double-flange Air System type. If your wheel has that design, the Type-1 will fit correctly, although we recommend verifying it before assembly.
How many units does the kit include?
The information provided by the manufacturer does not specify the exact number of units in the kit. Check the store listing or the product packaging to confirm.
Do I need special tools to mount them?
Generally, no special tools are required, although Sloting Plus offers preparation and adjustment tools that can facilitate the process. The manufacturer's how-to video is a good reference for correct assembly.
Are they suitable for club racing?
Yes. The components of the UFO family from Sloting Plus are aimed at both recreational use and the preparation of cars for competition on club tracks. Check your championship regulations to confirm that the type of foam is allowed.
Can I reuse the foams or are they single-use?
Polyurethane foams tend to degrade with use and the heat generated on track. It is common to replace them when deformation, loss of elasticity, or reduction in grip of the tyre mounted on them is detected.
The Sloting Plus SP029951 Foam Kit Type-1 is a precision slot car spare part designed for UFO Universal and UFO-R wheels, fully compatible with double-flange Air System rims from other brands. An essential component for 1/32 slot car preparation, offering consistent tyre fit and improved on-track performance. Available at Ministry of Hobby, your specialist in slot car parts, tools and accessories.