How can I recognise quality aftermarket springs?

The coil spring plays a major part in influencing the ride, handling and braking performance of a modern car.

As you know, coil springs are safety critical components, so firstly, it is important that the replacement coil spring matches exactly the technical requirements specified by the vehicle manufacturer.

Secondly, it is crucial that the mechanic can identify the correct aftermarket part for the vehicle under repair.

The simplest way for a mechanic/technician to check the quality of an aftermarket replacement spring is to compare it directly with the Original Spring on the vehicle.

An original equipment spring is generally quite easy to identify because it will usually carry a colour code or letter code and although the aftermarket replacement spring may not carry any code, the spring shape and geometry should be the same.

Many vehicle manufacturers employ coil springs manufactured from tapered wire, usually because this as an effective means to combine progressive spring rate with low noise and efficient packaging on the vehicle.

Suplex offers this OE technology to the aftermarket as all coil springs are manufactured to the original equipment design.