Pro Aluminium Wheels 15.8x8.2 Reduced Width (x 2)

Slot.it brings CNC machining precision to your rear axles with these narrow-width Pro aluminium wheels.

The reference SIPA24-ALF is part of Slot.it's Pro line, specifically designed for drivers who demand machining tolerances that are impossible to achieve with plastic wheels. The high-quality aluminium used in their construction ensures near-perfect roundness, resulting in the absence of vibrations at high speeds and absolutely uniform contact with the tyre around the entire perimeter.

Function and Performance

The diameter of 15.8 mm and the width of 8.2 mm adhere to a very specific technical criterion: to keep the tyre footprint within the wheel arch on narrow-bodied cars — especially historic GTs, competition saloons, or low-profile prototypes — without sacrificing effective grip. The reduced width also allows for greater geometric freedom in the chassis, facilitating alignment adjustments without interference.

The lightweight core is not a minor detail: by reducing the rotational mass on the rear axle, the car responds more quickly to acceleration impulses and recovers speed more effectively after braking. In club racing, where times are decided by tenths, this factor makes a real difference.

Compatibility and Installation

These wheels are designed for the standard axle of 2.38 mm (3/32"), the most common in 1/32 scale racing. The fixing is done using an M2 Allen grub screw, which ensures a firm lock without lateral play and allows for quick disassembly during preparation or adjustments in the pits.

As part of the Slot.it ecosystem, they fit directly with the brand's own chassis and axles, which are very common on Sport track systems. They are also compatible with any third-party setup that respects the standard 3/32" axle diameter.

Installation and Preparation

• Before mounting the tyre, ensure the axle is perfectly clean and free of burrs to avoid compromising concentricity.
• Tighten the M2 Allen grub screw with a 1 mm key, applying the correct torque: excessive tightening can deform the axle hole.
• If you seek maximum precision, check the roundness of the mounted wheel with a dial gauge before gluing the tyre.
• For tyre adhesion, a small amount of contact adhesive on the outer perimeter of the wheel is sufficient; avoid excess that may cause imbalances.

Common Mistakes

• Mounting oversized tyres: the width of 8.2 mm requires tyres with a narrow profile. Always check the tyre specifications before choosing.
• Confusing 3/32" axle with 2 mm axle: the difference is only 0.38 mm, but the fit is not interchangeable. Verify your axle diameter before ordering.
• Ignoring balancing after installation: even with a CNC wheel, a poorly glued or unbalanced tyre introduces vibration. Spend a few minutes on truing.

Ideal for…

This set of wheels is designed for the club racer who fine-tunes every tenth, for the builder who equips competition cars with proven parts, and for the discerning enthusiast who wants to bring the same precision philosophy that Slot.it applies to its complete cars to the Sport track. They also fit perfectly in restoration and customization projects where technical detail and visual fidelity are equally important.

Frequently Asked Questions

Are these wheels compatible with 2 mm axles?

No. They are specifically designed for 2.38 mm (3/32") axles. For 2 mm axles, there is a different reference within the Slot.it catalogue.

Which Slot.it tyres are most suitable for these wheels?

With a width of 8.2 mm, they are compatible with the narrow-profile tyres from the Slot.it range. Check the inner width specifications of the tyre to ensure a correct fit.

Can I use them on Scalextric or Ninco track (universal track)?

The wheel itself does not depend on the track system, but on the chassis and axle of the car. If your setup uses a 3/32" axle, you can install them regardless of the type of track.

Do these wheels need to be turned or trued before use?

Slot.it's CNC machining offers very high roundness as standard. In most applications, it is not necessary to turn them, although a small truing with fine-grit sandpaper always helps to seat the tyre.

Does the content include Allen grub screws?

The available information indicates fixing by M2 Allen grub screw, but does not explicitly confirm if they are included in the package. We recommend checking the contents of the packaging or consulting us before ordering.

Are they suitable for federated competition?

Yes. Machined aluminium wheels are common in club racing categories and in free preparation formats. Check the specific regulations of your championship for any restrictions on size or material.

Slot.it Pro aluminium wheels SIPA24-ALF, 15.8×8.2 mm narrow-width, for 3/32" axles — precision CNC-machined for 1/32 scale slot car racing. Designed for Sport track systems, these lightweight aluminium wheels reduce rotational mass, improve acceleration response and ensure perfect tyre concentricity. An essential upgrade for club racers and high-end build projects seeking professional-grade components.