6.5" Radius Arm Suspension System
Zone Offroad D58
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6.5" Radius Arm Suspension SystemEngineered to match the strength of the 2014-18 RAM 2500 4WD trucks, these systems upgrade the factory front radius arms and offer great ride quality and handling characteristics on road while improving offroad performance and allowing 37" tires to be installed. The new radius arms are a substantial upgrade to the factory stamped units and improve the ground clearance compared to drop bracket kits. The arms are fully boxed, internally gusseted and designed to bolt in the factory location while correcting the suspension geometry at 6.5" of lift. At the frame mount, the arms utilize extra large, greaseable bushings to isolate road noise and vibrations while the axle mount is designed to retain the factory alignment cams for adjustability. The arms are formed inward to maximize tire clearance and looks great under the new RAM HDs.
In addition to the new radius arms, this system gets its height from 6.5'' progressive rate front coils designed for a smooth ride for unmatched highway and trail performance. Steering correction comes from a forged dropped pitman arm and a heavy duty, fully welded front track bar bracket is used at the frame to recenter the front axle securely under the truck. Rounding out the front of this 6.5" radius arm system are a pair of polyurethane extended bump stops, brake line relocation brackets, and your choice of Zone hydro or Zone nitro shocks along with all the necessary hardware to complete the install. Out back the the new coil sprung rear is lifted using 4.5" progressive rate coils designed to level the stance while offering a great ride quality on and offroad without hindering the towing capabilities. Also included are extended sway bar links, bump stop extensions and a rear track bar bracket to recenter the rear axle.
In addition to this kit, Zone offers both single and dual steering stabilizer kits to fit the redesigned front end. Available in both white (3000 series) and black (7000 series) finishes, these steering stabilizer kits are far superior to the factory stabilizer unit and a great addition to help control larger tires on and offroad. The single kits are a stock replacement while the dual kits install stacked in the stock location.
- Utilizes Heavy Duty Drop Brackets
- Correct Suspension Geometry
- Progressive Rate Coil Springs
- *Kit images show upgraded Nitro (black) shocks*
- Front driveline vibration may occur at speeds over 35 mph when in 4WD. If this occurs, install the appropriate optional t-case indexing kit. Models with a 6 bolt transfer case use part # D5623. Models with an 8 bolt transfer case use part #D5813.
- Vehicles equipped with a two piece drive shaft and a carrier bearing require bearing drop kit D5405.
- Not designed for factory rear airbag suspension models.
- Will not fit Power Wagon models
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|6.5" Radius Arm Suspension System Specs|
|Front Lift Height: 6.5|
|Front Lift Method: Replacement Radius Arms|
|Rear Lift Height: 4.5"|
|Rear Lift Method: Coil Springs|
|Difficulty Level 1-5: 3|
|Wheel Size: 17x9+|
|Back Spacing: 4.5"|
|Max Tire Size: 35 X 12.50|
|Wheel Size: 17x9+|
|Back Spacing: 5.625"|
|Max Tire Size: 37 X 13.50|
This product fits the following applications:
- 14-18 Dodge/Ram Ram 2500 4WD Diesel