Spring set 3 hardness suspension

Three hardnesses, one common goal: finding the exact suspension point

When the suspension is not well calibrated, the car loses grip on elevation changes, bounces during braking, and does not transmit traction well in corners. This spring set allows you to test three different hardnesses on the same car without the need to buy spare parts blindly: you have everything in one bag to compare, choose, and adjust.

Product features

• Material: stainless steel, resistant to corrosion and deformation from continuous use.
• Contents: 6 springs in total, distributed in 3 pairs of different hardness (2 + 2 + 2 units).
• Reference: SP117001.

Function and performance

The hardness of the spring directly affects how much the suspension yields to track irregularities and how much downward force the car exerts on the rail. A soft spring absorbs bumps better and favours stability on tracks with many elevation changes; a hard spring transmits chassis movements more directly and is usually preferred on very smooth tracks or high-speed corners where precision and immediate response are sought.

Having all three pairs in the same tuning session allows for real comparative testing without interrupting work on the bench.

Assembly and preparation

The replacement process is straightforward for any preparer with basic chassis tuning experience. Replace one pair at a time, test on track, and note the behaviour before moving on to the next. Stainless steel requires no prior treatment or special lubrication during assembly.

Ideal for…

• Preparers and club drivers competing in championships with different layouts who want to always have a quick adjustment solution.
• Enthusiasts who enjoy tuning as part of the hobby and seek to understand how each component affects the car's behaviour.
• Workshops and specialised shops that need to have several options on hand to work with different customer chassis.

Aspects to consider

Always check the compatibility of the spring with your chassis's suspension system before installation. The exact dimensions (inner diameter, outer diameter, and length) are crucial for the spring to fit correctly. If in doubt, consult the technical documentation of the chassis or contact us.

Frequently asked questions

What practical difference do I notice when changing the spring hardness on track?

A softer spring smooths out the bounces and improves the car's contact with the rail on uneven sections, while a harder spring provides greater stiffness and more direct response in fast corners. The effect varies depending on the chassis and the track, hence the usefulness of testing all three options.

Does stainless steel influence performance compared to other materials?

Yes. Stainless steel consistently maintains its elastic properties over time and does not degrade from moisture or lubrication oils. This ensures that the spring hardness remains stable between sessions, which is important when fine-tuning the setup precisely.

How many units of each hardness does the set include?

The set includes 6 springs in total: 2 units of each of the three available hardnesses. This way, you have a complete pair of each option to mount on both suspension points of the car simultaneously.

Is it compatible with any chassis that has suspension?

Compatibility depends on the dimensions of the spring housing in the chassis. Check the measurements before mounting. If you need help identifying compatibility with your specific model, please consult us.

Can I mix springs of different hardness on the same car?

Technically it is possible, although it is not the usual configuration. Some preparers experiment with asymmetric hardnesses to compensate for imbalances on tracks with a predominance of curves on one side, but it requires detailed testing to achieve a controlled result.

This set of three-hardness stainless steel springs is an essential slot car tuning accessory for adjusting chassis suspension behaviour on different track layouts. Whether you compete in club racing or simply enjoy fine-tuning your slot car setup, these springs let you compare soft, medium and hard options with a single purchase — 2+2+2 units included. Compatible with suspension-equipped slot car chassis from various manufacturers.