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Zone 6.5

Zone 6.5" Radius Arm Suspension System | 2014-2018 Ram 2500 (Diesel)

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USD 06-12-2022

Free shipping to the lower 48

Financing Available

All Zone products are experiencing 5-6 weeks delayed shipping. Additional delays are possible.

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Engineered to match the strength of the 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 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.

Quick 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


  • Utilizes Heavy Duty Drop Brackets
  • Correct Suspension Geometry
  • Progressive Rate Coil Springs


  • 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


2018 Ram 2500 Big Horn 4WD
2018 Ram 2500 Laramie 4WD
2018 Ram 2500 Laramie Longhorn 4WD
2018 Ram 2500 Limited 4WD
2018 Ram 2500 SLT 4WD
2018 Ram 2500 Tradesman 4WD
2017 Ram 2500 Big Horn 4WD
2017 Ram 2500 Laramie 4WD
2017 Ram 2500 Laramie Longhorn 4WD
2017 Ram 2500 Limited 4WD
2017 Ram 2500 SLT 4WD
2017 Ram 2500 Tradesman 4WD
2016 Ram 2500 Big Horn 4WD
2016 Ram 2500 Laramie 4WD
2016 Ram 2500 Laramie Longhorn 4WD
2016 Ram 2500 Limited 4WD
2016 Ram 2500 Outdoorsman 4WD
2016 Ram 2500 SLT 4WD
2016 Ram 2500 Tradesman 4WD
2015 Ram 2500 Big Horn 4WD
2015 Ram 2500 Laramie 4WD
2015 Ram 2500 Laramie Limited 4WD
2015 Ram 2500 Laramie Longhorn 4WD
2015 Ram 2500 Lone Star 4WD
2015 Ram 2500 Outdoorsman 4WD
2015 Ram 2500 SLT 4WD
2015 Ram 2500 Tradesman 4WD
2014 Ram 2500 Big Horn 4WD
2014 Ram 2500 Laramie 4WD
2014 Ram 2500 Laramie Limited 4WD
2014 Ram 2500 Laramie Longhorn 4WD
2014 Ram 2500 Lone Star 4WD
2014 Ram 2500 Outdoorsman 4WD
2014 Ram 2500 SLT 4WD
2014 Ram 2500 Tradesman 4WD

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About Us
We are dedicated to helping you find the perfect fitment for your ride while also bringing you the highest quality, affordable aftermarket parts in the world! We are truck and car enthusiasts who build their dream rides with these very products.

Shipping times vary depending on item and immediate availability. Many suspension kits will ship out within 3-5 business days while some select items may take up to 7-10 business days. You will receive the tracking information via email as soon as it is available so you can easily track your package(s) from us, to your door. Keep in mind, some suspension components may ship separately and could arrive at different times. All shipping prices are based on the lower 48 states unless specified otherwise. Always inspect your items immediately upon receipt and notify us within 5 business days if there are any concerns, damages, or missing items.

WARNING: This product can expose you to Nickel, which is known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to

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