Factory Connection Progressive Shock Spring - 8.0-10.3 kg/mm - FCW-3

Progressively wound spring gives a nice, plush ride over the little stuff and wont bottom out over the big stuff
The more its compressed, the greater the resistance
Cold-wound on precision CNC equipment for the ultimate in strength
Heat-tempered, shot-peened and end-ground for durability
Preset for fatigue resistance
Wide variety of rates and applications
Accurate rates and proper fitment
Works with any White Power 5018 shock