TiN cover axle 52.5mm x2 - solid

Precision and hardness where it matters most: the solid TiN Cover axles from Avant Slot

Axles are one of those components that make the difference between a well-prepared car and one that simply rolls. The TiN Cover 52.5 mm solid axle (AV20432) from Avant Slot is the brand's response to those who demand the utmost in every tenth of a lap: precision-ground carbon steel treated with Titanium (TiN), the same type of coating found on high-performance industrial machining tools.

Technical specifications

• Diameter: 2.38 mm
• Length: 52.5 mm
• Construction: solid (not hollow)
• Material: precision-ground carbon steel
• Surface treatment: TiN coating (titanium nitride)
• Weight: 1.8 g per unit / 3.6 g per pair
• Pack contents: 2 units

Function and performance

The TiN coating — titanium nitride — provides a surface hardness far superior to untreated steel. This translates into two direct advantages on track: lower friction with supports and bearings, and greater resistance to marks caused by the transmission elements themselves (crown gears, wheels, collars). An axle that does not mark or wear is an axle that maintains the geometry of the rear end session after session.

Being solid gives it total rigidity, eliminating any possibility of flexing under load. Combined with precision grinding, it ensures that the dimensions remain exact and that the rotation is perfectly concentric.

Compatibility and installation

With a diameter of 2.38 mm and a length of 52.5 mm, this axle fits the standard track widths of 1/32 scale slot car chassis, in both inline, sidewinder, and anglewinder configurations. Before installation, it is advisable to always check the required length according to the chassis and the type of wheels you will be using, as some tuning kits require positional adjustments.

The TiN treatment does not require special preparation prior to installation. A simple cleaning of the axle before insertion is sufficient to ensure a clean fit in the bearings.

Common mistakes to avoid

• Do not force the axle into overly tight bearings without first checking the tolerances: the grinding is precise, but a blow can compromise concentricity.
• Do not confuse this solid axle with hollow versions from the Avant Slot catalogue: the weight per unit is different and affects the car's balance.
• Check that the length of 52.5 mm is correct for the chassis in question before mounting crown gears or wheels.

Frequently asked questions

What advantage does the TiN coating have over a conventional steel axle?

The TiN (titanium nitride) significantly increases surface hardness, reducing friction with bearings and the appearance of marks caused by crown gears or wheels. The result is an axle that retains its geometry for longer and contributes to smoother and more stable rotation.

Is this axle compatible with any 1/32 slot car chassis?

In principle, yes, as long as the chassis accommodates an axle with a diameter of 2.38 mm and a length of 52.5 mm. It is advisable to check the chassis specifications before placing an order, especially for competition models with very tight measurements.

What is the difference between a solid axle and a hollow one?

The solid axle is completely solid inside, which provides greater rigidity and eliminates any risk of flexing. The hollow axle is lighter, which can be an advantage in setups aimed at minimising rotating mass, but sacrifices some structural rigidity.

Does the pack include 2 identical axles?

Yes, the AV20432 pack contains two identical axles: same diameter (2.38 mm), same length (52.5 mm), and same TiN treatment. The total weight of the pair is 3.6 g.

Do these axles require special lubrication?

The TiN coating already reduces friction on its own, but applying a small amount of specific slot lubricant at the contact points with the bearings is always a good practice to prolong the lifespan of the assembly.

The Avant Slot AV20432 TiN Cover solid axle (2.38 × 52.5 mm, pack of 2) is a precision-ground carbon steel axle with titanium nitride coating, designed for 1/32 slot car racing. The TiN treatment delivers exceptional surface hardness, reduced friction against bearings and minimal wear marks from crowns or wheels. At just 1.8 g per unit, it combines rigidity with controlled weight, making it a top choice for club racers and serious hobbyists looking to fine-tune their rear axle setup for consistent, reliable performance.