Safety through optimal suspension tuning! Progressive winding of the fork springs ensures optimal performance for road and track use. At low compression, they offer maximum convenience due to the finest response (low breakaway torque). At the same time, if compressed further, the springs enable tight and precise driving for best traction properties and drift protection. For the right damper tuning to the fork springs the recommended Wilbers fork oil should be used - the viscosity may vary from the one used originally.