Wheel 15.9 x 8.5 UFO -R-

The Sloting Plus UFO -R- Wheel: Dynamic Versatility in Magnesium for Competitive Slot Racing

The reference SP023501 belongs to the UFO family of Sloting Plus, a line of wheels designed to open up setup possibilities that did not exist in the slot market prior to its introduction. The -R- variant shares the spirit of the range, combining extreme lightness, magnesium construction, and a design that allows it to be mounted with or without interior foam.

Main Features

• Dimensions: 15.9 x 8.5 mm
• Material: magnesium
• Weight: 1 g
• Fixing: M2.5 x 3 mm allen stud
• Contents of the bag: 2 wheels + 4 foams + 2 M2.5 x 3 mm studs

Magnesium is a top-tier material choice in slot preparation: it offers very good structural rigidity with minimal weight, which directly contributes to reducing unsprung masses and improving rear-end response in corners.

Function and Performance

The key differentiating value of the UFO family lies in its compatibility with interior foams. Depending on the hardness and thickness of the selected foam, the wheel can notably vary its behaviour: it better absorbs track irregularities, improves tyre contact with the surface, and allows for configuration adaptation to different circuits.

This makes the UFO -R- a real tuning tool, not just a spare wheel. With foam, the assembly acts in a more cushioned manner; without it, the behaviour is more direct and predictable, ideal for technical tracks where precision is prioritised.

Compatibility and Assembly

The M2.5 x 3 mm allen stud is the standard fixing system of Sloting Plus, widely used among preparers. Assembly is straightforward and requires no special tools beyond an appropriately sized allen key.

The bag includes spare foams, allowing for testing of different configurations without the immediate need to acquire additional materials. A practical detail that is appreciated in the box during a tuning session.

Ideal for…

• Enthusiasts looking to fine-tune the dynamic behaviour of their car on plastic or wood track.
• Club competitors wanting to explore foam configurations without investing in multiple references.
• Preparers already working with the M2.5 fixing system from Sloting Plus and looking to expand their wheel options.

Considerations

Choosing the right foam is key to making the most of this wheel. A foam that is too soft can cause bouncing on fast tracks; one that is excessively hard can reduce the cushioning effect. We recommend conducting comparative tests with the included foams before settling on a specific compound.

Also remember that tyre turning, once mounted on the wheel with foam, may require slight adjustments compared to usual, as the assembly behaves differently than a conventional solid wheel.

Frequently Asked Questions

How many wheels are included in the SP023501 bag?

The bag contains 2 UFO -R- wheels of 15.9 x 8.5 mm, along with 4 foams and 2 M2.5 x 3 mm allen studs.

Is it mandatory to use the interior foam?

No. The UFO design allows it to be mounted with or without foam. Without foam, it offers a more direct behaviour; with foam, greater adaptability and absorption of track irregularities.

What is the difference between the -UNIVERSAL- and -R- variants of the UFO family?

Both share the same design concept with the possibility of interior foam, but differ in their dimensions and specific applications. The -R- corresponds to a specific geometry; consult the complete family to choose the one that best fits your chassis and tyre.

What type of tracks does this wheel work best on?

Thanks to the option of interior foam, the UFO -R- adapts to both plastic and wood tracks. The optimal configuration will depend on the type of circuit and the tyre used.

What allen key do I need for assembly?

The stud is M2.5 x 3 mm, so you will need a 1.5 mm allen key, the standard size for this type of fixing in slot.

Can I use foams from other brands or references?

In principle, yes, as long as the dimensions are compatible with the UFO wheel housing. The 4 foams included in the bag are the recommended starting point for adjusting the configuration.

The Sloting Plus SP023501 UFO -R- wheel (15.9 x 8.5 mm) is a magnesium slot car wheel designed for both plastic and wood track surfaces. Weighing just 1 gram and compatible with foam inserts, it offers advanced setup options for club racing and competitive slot car preparation. Includes 2 wheels, 4 foam inserts, and 2 M2.5 x 3 mm allen studs. A top choice for slot car tuning enthusiasts looking for dynamic versatility and lightweight performance.