4.5" Axle Forward Suspension System 

This fits the following applications:

2010-2012 Dodge Ram 3500 4WD Diesel/V10 Reg/Quad/Mega Cab Revtek

Features: 

Longer control arms to relocate the axle forward for improved tire clearance

Driveline spacer to compensate for axle being forward

No cutting or welding necessary

Easy bolt-up installation--the most installer friendly system available

All-inclusive kit--no extra components necessary