The springs have now been specifically designed to fit the big bore shocks. Group of 2. The main benefit and advantage of progressive springs is the fact that because the automobile initially comes into the part they work like soft springs to deliver maximum traction. On top of that, when the framework begins to move, in the middle of the part, the springtime rate progressively increases until they work like a hard springs which allows the car to steadfastly keep up maximum cornering speed.
Like the rest of the XRAY springs, these springs are manually measured, chosen and matched into pairs to guarantee exactly equal length and damping faculties.