Wheel 16.2 x 8.5 mm. URANO EVO II

The Urano EVO II: when Sloting Plus refines a magnesium classic to take it a step further

The Urano EVO II wheel (ref. SP022514) is Sloting Plus's response to the demands of its most discerning customers: to maintain what already worked in the Urano family and add specific, measurable improvements with technical grounding. This is not a makeover; it is a real evolution.

Features and Highlights

• Material: magnesium, the same material that defines the high-end spare parts range of Sloting Plus due to its low density and rigidity.
• Dimensions: 16.2 mm diameter x 8.5 mm width.
• Weight: 0.84 g per unit.
• Fixing: Allen screw M2.5 x 2.5 mm included.
• Contents: bag with 2 units.

The Structural Innovation: the Lightened Inner Flange

The most visible change of the EVO II compared to its predecessor is the incorporation of perforations in the inner flange of the rim. This solution is not new in the Sloting Plus catalogue: it was already applied in the MERKURO wheels over 17 years ago, with proven results on track. The aim is straightforward: to reduce weight in the peripheral area of the wheel to improve rotational inertia and response in acceleration and braking.

Less mass on the outer radius means that the motor requires less effort to spin the wheel, and the car reacts more nimbly to changes in speed. In an already lightweight magnesium wheel, every tenth of a gram counts.

Balancing and Allen Screw M2.5

The EVO II incorporates the Allen screw M2.5 x 2.5 mm specifically to facilitate fine balancing of the wheel. Sloting Plus speaks of an "almost" ideal balance: honest and technical, because in the reality of the preparation workshop, there are always variables (tyre, gluing, axle) that affect the final result. The screw allows micro-adjustments that, combined with the lightening of the flange, bring the assembly closer to the optimal point of rotation without vibrations.

Assembly and Preparation

• Check the diameter of your car's rear axle before mounting: the wheel must fit without play or forcing.
• When gluing the tyre, distribute the adhesive evenly to avoid compromising the balance you have already achieved with the screw.
• Tighten the Allen screw with the appropriate tool to the correct torque: magnesium does not forgive excessive force at the fixing point.
• If you are preparing a car for club competition, weigh both wheels from the bag together and separately: magnesium has a very low manufacturing dispersion, but a good preparer always verifies.

Common Mistakes

• Using an oversized Allen key: the M2.5 socket is small; a key that does not fit perfectly can damage the hexagon.
• Gluing the tyre without cleaning the rim: magnesium may have machining residues that prevent proper adhesion. A quick step with isopropyl alcohol solves the problem.
• Confusing diameter and width: 16.2 mm is the outer diameter, 8.5 mm is the width. Check both measurements against the chassis specifications.

Frequently Asked Questions

How many wheels are included in the bag?

The bag contains 2 units, sufficient to equip the rear axle of a car.

Is the Allen screw already installed or loose?

The Allen screw M2.5 x 2.5 mm is included in the bag along with the wheels. It usually comes loose for the preparer to install and adjust at their discretion.

What real advantage does magnesium have over aluminium in a wheel of this size?

Magnesium is approximately 35% lighter than aluminium with comparable rigidity. In a rotating piece like a wheel, that mass difference is noticeable in inertia: the car accelerates and brakes more nimbly, and the motor operates more efficiently.

What scale is this wheel intended for?

The dimensions (16.2 x 8.5 mm) are typical of the 1/32 segment, which is the reference scale in competitive and recreational slot racing with GT-type cars, touring cars, and prototypes of the category.

What differentiates the EVO II from the previous version of the Urano?

The main novelty is the incorporation of perforations in the inner flange of the rim to lighten the peripheral area, a solution already tested in the MERKURO range of Sloting Plus. This reduces weight in rotation and improves the dynamic response of the car.

Is it compatible with any 1/32 chassis?

Compatibility depends on the diameter of the rear axle and the available space in the chassis. Check your car's specifications before mounting to ensure that the measurement 16.2 x 8.5 mm fits correctly.

The Sloting Plus Urano EVO II wheel (SP022514) is a magnesium 1/32 slot car rim measuring 16.2 x 8.5 mm, weighing only 0.84 g per unit. Featuring a lightened inner flange — a proven solution from the Merkuro line — and an Allen M2.5 x 2.5 mm grub screw for near-perfect balancing, it is an ideal upgrade for club racing and performance-oriented slot car builds. Pack includes 2 wheels.