YSS Suspension G Serie for Vespa LX/LT/LXV/S125
HREAD SPRING PRELOAD
Is a high-performance gas shock absorber with YSS standard that has an adjustable Preload Spring and worthwhile to use.
YSS RacingThread Spring Preload or adjustable spring screw. By threading the cylindrical shock absorbers, user can turn the preload to fine tune the spring and tighten a provided bolt to fix the ring in its position