Springs

Vanaf €40.00 each, excluding VAT

Intrax supplies coil springs with flat ends on both sides, suitable for installation on shock absorbers for street, circuit, and race applications. The springs allow the stiffness and ride height of the suspension to be precisely adjusted to the vehicle weight, the intended use, and the desired ride height.

All springs are made from high-grade spring steel and are thermally treated, ensuring they maintain their stiffness even after prolonged use. This keeps the setup stable and predictable.
The springs are available in various lengths, inner diameters, and spring rates (kg/cm), matching Intrax specifications as well as other common motorsport standards.

With the right combination of spring length and spring rate, the suspension can be tuned to achieve the desired vehicle behavior — from more comfort and grip on uneven surfaces to a stiffer setup for smooth race tracks.

Select your desired specification above or refer to the price list for a complete overview of the available dimensions.

Open Length (mm)
The spring length (open length) determines the ride height, preload, total spring travel, and the effective working range of the shock absorber. A longer spring allows more stroke to be used before reaching coil bind. It also provides more margin when adjusting ride height or corner weights, as the spring will not easily become loose when the car is fully extended. A shorter spring, on the other hand, limits total travel, lowers the car, and results in a stiffer, more direct response. This makes shorter springs suitable for flat circuits and applications where a low ride height is desired.

Note: A spring that is too short or too long can move the damper outside its ideal operating range, which may cause it to reach the end of its stroke.

Spring Rate (kg/cm)
The spring rate indicates how much force is required to compress the spring by 1 cm. A higher rate means a stiffer spring, resulting in less body movement such as dive, roll, and squat. This provides a direct and predictable chassis response — essential for circuit and race use where maximum control and consistency are important. A lower spring rate makes the suspension softer, allowing more chassis movement and generating more mechanical grip on rough or uneven surfaces. The correct spring rate depends on the total vehicle weight, weight distribution, type of circuit, and available tire grip.

Inner Diameter (mm)
The inner diameter determines how the spring fits onto the shock absorber or spring seat. This dimension must match the damper body or adapter used, ensuring the spring remains centered and can move freely.