Rally Rocking Spring (x2)

The spring that keeps your guide in place: precision in every corner

In the world of competitive slot racing, details make the difference. The Rally Basculant Spring (AV20545) from Avant Slot is the component responsible for ensuring the correct tension and movement of the guide arm in the brand's rally chassis. Without it — or with a worn one — the guide loses contact pressure on the rail, resulting in erratic behaviour, especially in tight corners and on the bumpy sections that characterise this type of track.

Function and performance

The basculant spring acts on the guide arm, allowing it to pivot freely while keeping it pressed against the rail. This balance between freedom of movement and constant pressure is essential for the braids to maintain continuous electrical contact and for the guide to respond swiftly to directional changes.

A damaged spring — fatigued, deformed, or broken — is one of the most common causes of intermittent disconnections and imprecise driving in cars with rally chassis. Having spare parts on hand is simply a matter of common sense.

Compatibility

• Specifically designed for the guide arm of Avant Slot rally chassis.
• Check your chassis reference before placing an order to confirm exact compatibility.

Installation and preparation

Replacing the basculant spring is a straightforward operation that does not require special tools. Simply remove the guide arm, take out the old spring, and install the new one, ensuring it is properly seated in its position. It is recommended to also check the condition of the guide arm and the braids while disassembling.

Common mistakes

• Not replacing the spring in time: a fatigued spring does not always break visibly; it may simply lose tension and cause contact failures that are difficult to diagnose.
• Confusing references: Avant Slot has several chassis models. Verify that AV20545 corresponds to your version of the rally chassis before installation.
• Ignoring the condition of the braids: if you change the spring, take the opportunity to check that the braids are in good condition and making proper contact.

Frequently asked questions

Which Avant Slot rally chassis is this spring indicated for?

It is indicated for the guide arm of Avant Slot rally chassis. If you have doubts about whether your specific chassis is compatible, we recommend checking the reference on the website or contacting us before placing your order.

How many units does the pack include?

The pack includes 2 basculant springs.

How often should I replace the basculant spring?

There is no fixed interval, but it is advisable to check it whenever you notice that the guide is not pressing correctly on the rail or that intermittent disconnections occur without apparent cause. In competition, a periodic check of the guide assembly — spring, arm, and braids — is a good maintenance practice.

Is it difficult to install?

No. The replacement is quick and does not require special tools. With minimal experience in slot car maintenance, the change can be done in a few minutes.

Can I use this spring on chassis from other brands?

It is specifically designed for Avant Slot rally chassis. We cannot guarantee its compatibility with chassis from other brands, as geometries and fittings may vary.

The Avant Slot AV20545 Rally Basculant Spring (pack of 2) is a key replacement part for rally chassis guide arms. Designed to maintain correct guide pressure and pivot movement on the rail, it ensures consistent electrical contact through the braids and precise steering response. Essential maintenance for any slot car enthusiast running Avant Slot rally chassis builds.