Manganese Silicon Steel
Heat treatment 405° C
400.000 guaranteed load cycles
Tests held on 100% of spring produced
Linear: with constant flexibility.
Progressive: spring flexibility increases with compression.
Side Load: their curved shape reduced the friction between shock absorbers piston rod and seal, increasing the life of shock absorbers
Mini-block (taper wire): this model with barrel shape is extremely flexible, allowing a higher driving comfort. This sping is typical in cars models such as Audi A3/A6, BMW 3, VW Golf, and Passat.
Always replace coil springs and shock absorbers in pairs.
Coil springs are stressed as much as shock absorbers. Wear and corrosions over time cause a progressive loss of the spring torsional property.
Therefore it is important to replace springs and shock absorbers at the same time, always by the same axle in order to restore the optimal state of the suspension and balance the vehicle.