Aluminium wheels 16.5x8.2 (X2) OLD SIPA43-ALS

Slot.it SIPA43-ALS Aluminium Wheels: Precision Machined for Sport Track Competition

Slot.it is one of the undisputed reference brands in the world of competitive slot racing, and its range of aluminium wheels and rims is a clear example of that philosophy: machined parts with very tight tolerances, designed for those who do not want to leave any detail to chance. The SIPA43-ALS rims, measuring 16.5x8.2 mm, are part of that catalogue of technical spare parts aimed at both club racers and the most demanding preparers.

Main Features

• Material: machined aluminium, lighter than plastic and with greater dimensional rigidity.
• Measurements: 16.5 mm outer diameter × 8.2 mm width.
• Pack Contents: 2 units (SIPA43-ALS).
• Official Slot.it Reference: SIPA43-ALS.

Function and Performance

The use of aluminium in rims compared to conventional plastic offers several advantages in a competitive context. Being a stiffer material, the rim does not deform under the pressure of the tyre or with the heat generated during long sessions, resulting in more predictable and consistent behaviour throughout each heat. Additionally, the machined aluminium ensures greater concentricity, reducing possible vibrations that would be caused by rims with slight eccentricities.

The measurement of 16.5x8.2 mm corresponds to a rear rim of a compact size, common in slot car configurations of scale 1/32 prepared for Sport track (Scaleauto, Slot.it).

Compatibility and Installation

These rims are designed to fit the axles and hubs of Slot.it cars, although their use can extend to any preparation where the measurements are compatible. Before installation, it is advisable to check the inner diameter of the hub to ensure a correct fit with the car's axle. If using tyre glue, apply a minimal and uniform amount to avoid generating imbalances.

Preparation and Common Mistakes

A common mistake when working with aluminium rims is assuming that they do not require turning. Although the factory concentricity is very high, in high-level preparations it is still advisable to turn the rim once the tyre is mounted, to ensure maximum roundness of the rim-tyre assembly. It is also important not to overtighten the axle fixing screws, as aluminium, although strong, can suffer marks that affect future assembly.

Ideal for…

• Club racers competing on Sport track who want to improve the consistency of their rear wheels.
• Preparers looking to reduce the unsprung weight of the rear end.
• Technical slot enthusiasts already working with Slot.it chassis and motors who want to maintain brand coherence across all components.

Frequently Asked Questions

How many rims are included in the SIPA43-ALS pack?

The pack includes 2 units of aluminium rim measuring 16.5x8.2 mm.

Are these rims compatible with any slot car?

Their design is oriented towards Slot.it cars and axles, but they can be used in other preparations as long as the inner diameter of the hub and the axle diameter are compatible. Always check the measurements before installation.

What track are these rims designed for?

As a Slot.it component, they are primarily designed for use on Sport track (the one used by brands like Scaleauto and Slot.it), although the rim itself does not limit its use to a specific type of track.

Do I need to turn the aluminium rims before using them?

For recreational or casual club use, it is not strictly necessary, but in competition preparations, it is recommended to turn the rim-tyre assembly once mounted to achieve maximum concentricity and reduce vibrations.

What advantage does aluminium have over plastic in rims?

Aluminium is stiffer and does not deform with heat or pressure. This translates into more consistent behaviour throughout the race and greater dimensional accuracy, which is especially important in technical preparations.

Slot.it SIPA43-ALS aluminium wheels 16.5x8.2 mm (pack of 2) — precision-machined alloy rims for 1/32 slot car racing. Designed for Sport track systems, these lightweight aluminium wheels offer superior rigidity and concentricity compared to standard plastic rims, making them a top choice for club racers and serious slot car builders looking to optimise rear axle performance and tyre consistency.