Safety from optimal chassis tuning! The progressive winding of the fork springs provides an ideal function for road and racing use. With a low compression path they offer the highest level of comfort as a result of the finest response characteristics (low breakout torque). At the same time with further compression the springs provide tight, precise driving behaviour for the best traction characteristics and bottoming out reserves. The recommended Wilbers fork oil SAE 5 (order No. 55040300010) should be used to correctly adjust the damper to match the fork springs with an air chamber of 90 mm - the viscosity may differ from the original oil.