YSS linear fork springs for Honda Forza 300/350 scooters. YSS springs offer a higher level of performance than the stock springs while maintaining comfort suitable for road use. YSS fork springs are made of high quality silicon spring steel. This allows the wire thickness to be reduced, which makes the spring more active and thinner, but at the same time effectively prevents the spring from twisting. To minimize noise and improve oil flow in the fork, the springs are fully polished and ground top and bottom. YSS supplies this kit designed and built to fit the specifications of the model on which it will be installed. Diameter 26.5mm, Spring length 220mm - Stiffness 5,5 N/mm