Zone Offroad HD Radius Arm Upgrade Kit 14-23 Ram 2500 | 13-23 Ram 3500 4WD ARP-247-4206 FASS Whisper Technology (FWT) was

FASS Whisper Technology (FWT) was engineered to meet the stringent demands of today's quiet diesel engines

making them a variable spring rate

You want the ultimate ride

Enhance the front suspension of your 01-10 GM Duramax 2500HD/3500HD 2WD/4WD with the Timbren SES (Suspension Enhancement System) to provide improved vehicle handling

Because the design tracks the knuckle on an imperfect axis

Zone Offroad HD Radius Arm Upgrade Kit 14-23 Ram 2500 | 13-23 Ram 3500 4WD ARP-247-4206 FASS Whisper Technology (FWT) wasReplace your factory weak radius arms in your 2013+ Ram 2500 3500 with these bolt in replacement radius arms from Zone. These new arms build on the strength and functionality of the previous generation arms and add improved styling and Zone Offroad branding. Built right here in the USA, these radus arms continue to be built from high strength 1 4" steel, boxed, internally gusseted and fully welded. Designed as a direct replacement for the factory