09-12 RAM 2500/3500 4.5" Suspension System-Stage 4 17-Current F250/F350 4.5" IVD Complete the spring rate of the

the spring rate of the standard configuration has been lowered slightly

FRONT SWAY BAR RELOCATION BRACKETS NOT USED FOR KDSS EQUIPPED VEHICLES

Adjustable coilovers from 1-3" of lift height

Progressive leaf springs improve ride quality without reducing towing capacity

09-12 RAM 2500/3500 4.5" Suspension System-Stage 4 17-Current F250/F350 4.5" IVD Complete the spring rate of theDescription: 2009 2012 Ram 2500 3500 4. 5" Stage 4 Suspension System utilizes the same technology as the 2. 5" systems while adding lift height and ground clearance. Additional engineered front end components are added to ensure proper steering geometry with improved function throughout the entire travel range whether on or off road. The Stage 4 System is comprised of dual rate coil springs, tubular steel upper & lower link arms, polyurethane