TiN cover axle 55mm x2 - solid

Precision and extreme hardness: the Avant Slot 55 mm solid TiN cover axle

When track performance depends on every tenth, the quality of the rear axle makes a difference. Avant Slot launches this solid axle of 2.38 mm × 55 mm with a surface treatment of Titanium Nitride (TiN) that elevates its hardness well above that of a conventional axle, protecting the surface against wear, friction, and marks that occur with continuous use.

Features and highlights

• Material: high-precision ground carbon steel.
• Surface treatment: TiN (Titanium Nitride) coating, providing extreme hardness and low friction.
• Measurements: 2.38 mm diameter × 55 mm length.
• Type: solid axle.
• Weight: 1.9 g per unit (3.8 g per pair).
• Pack content: 2 units.
• Reference: AV20433.

Function and performance

The grinding of the steel ensures very tight concentricity, resulting in clean, vibration-free transmission. The TiN coating adds a layer of protection that minimizes wear on the bearing supports and extends the lifespan of both the axle and the bearings themselves. The characteristic golden surface of TiN is not just aesthetic: it is the visible sign of a hardness that clearly surpasses that of untreated steel on the Vickers scale.

The weight of 1.9 g per unit makes it a balanced axle, without adding unnecessary mass to the rear end, something that tuners particularly value in competition setups where every gram counts.

Compatibility and installation

With a standard diameter of 2.38 mm, this axle is compatible with most bearing supports, crown gears, and tyres designed for this common measurement in the 1/32 scale slot racing world. The length of 55 mm makes it suitable for a wide variety of chassis, both production and modified. As always, it is advisable to check the specific measurements of the chassis before installation.

Ideal for…

• Club racers looking to reduce maintenance and extend the lifespan of their rear ends.
• Tuners wanting a reference axle to work with crown gears, tyres, and bearings without fear of premature wear.
• Any enthusiast who has experienced issues with marks or deformations on conventional axles under intensive use.

Common mistakes

A common mistake is using untreated steel axles in precision bearing supports: over time, the axle itself becomes marked and generates play that degrades track performance. The TiN treatment of this axle precisely avoids that problem. Another point to check is the length: 55 mm is a generous measurement; ensure that your chassis can accommodate that length before installation.

Frequently asked questions

What real advantage does the TiN treatment provide over a conventional steel axle?

Titanium Nitride (TiN) forms a surface layer of hardness far superior to that of untreated carbon steel. This reduces friction on the bearing supports, minimizes marks produced by the bearings, and significantly extends the lifespan of the axle under continuous use.

Is this axle solid or hollow?

It is a solid axle, which gives it greater rigidity and resistance to torsion compared to hollow axles, although with a slightly higher weight.

How many units are included in the pack?

The AV20433 pack includes 2 units, with a total weight of 3.8 g (1.9 g per axle).

Is it compatible with standard 2.38 mm bearing supports?

Yes. The 2.38 mm diameter is the most widespread standard in 1/32 scale slot racing. It is compatible with most bearing supports, bearings, and crown gears designed for that measurement. Always check the length accepted by your chassis before installation.

Does it require any special maintenance?

No special maintenance is required other than that of any precision axle: periodic cleaning and light lubrication on the bearing supports. The TiN coating already reduces the need for frequent intervention.

The Avant Slot AV20433 is a 2.38 mm × 55 mm solid steel axle with TiN (Titanium Nitride) coating, offering extreme hardness and low friction for 1/32 slot car racing. Carbon steel, precision ground, weighing 1.9 g each — pack of 2 units. Perfect for club racing, slot car tuning and competitive setups requiring durable, mark-resistant rear axles.