Ram 2500 3.5" Lock-N-Load Radius Arm Suspension & Lift Kit, [Diesel 2014 - 2018]
MetalCloak's RAM Radius Arm Suspension System combines True Dual Rate™ coils, Kevlar®-infused Duroflex™ Joints, and your choice of Lock-N-Load™ or standard radius arms for ride comfort and off-road articulation. Designed for RAM 2500 diesel trucks, this system delivers strength and adjustability for work, daily driving, and trail use.
Features Include:
- 3.5" Front True Dual Rate™ Coils
- Choice of 3.5" Rear True Dual Rate™ Coils or Max Payload Option
- Durotrak™ Front and Rear Track Bars
- Polyurethane Upper Spring Captures/Isolators
- 3/16" Steel Front Lower Coil-Correct Captures
- 3" Kevlar®-Infused Duroflex™ Joints
- Oversized Forged Adjustable Ends
- 2" OD DOM Steel Gusseted Front Lower Radius Arms
- 2" OD DOM Steel Adjustable Rear Upper and Lower Control Arms
- Front and Rear Bolt-On Bump Stop Towers
- Choice of Lock-N-Load™ or Standard Radius Arms
True Dual Rate™ coils feature an anti-bow front design supported by 3/16" steel lower Coil-Correct captures and polyurethane upper spring captures/isolators. These components work together to support coil positioning and ride comfort.
The 3" Kevlar®-infused Duroflex™ Joints are housed in forged adjustable ends that thread into strong 2" OD DOM steel arms. The joints provide articulation while reducing noise, vibration, and harshness (NVH), with maintenance-free durability for daily driving and trail use.
Choose standard radius arms or MetalCloak's exclusive Lock-N-Load™ upper arm option. Lock-N-Load™ provides stability for on-road driving and allows additional suspension flex when off-road terrain demands greater articulation and tire contact.
The front and rear track bars feature patented Durotrak™ bushings made from MetalCloak's proprietary elastomer compound. Their two-piece design threads together for installation without a press and helps reduce vibration and harshness while allowing controlled suspension movement.
The front track bar also features an oversized 1" steel heim joint with a carbon fiber-reinforced insert designed to reduce wear without requiring lubrication. Its zinc-plated finish helps resist corrosion.
The Durotrak™ Adjustable Rear Track Bar combines a patented two-piece Durotrak™ bushing with a solid 1.375" OD 4130 chromoly steel bar. Adjustable length allows rear axle positioning, while the gold zinc finish helps protect against corrosion and the elements.
Front and rear bolt-on bump stop towers reposition the factory bump stops to accommodate the added lift height.
Together, these components provide a complete suspension system designed to balance road comfort, strength, and off-road capability for your RAM.
Compatibility: This MetalCloak RAM Suspension System is for RAM 2500 diesel trucks.
Coil Coating: MetalCloak does not recommend powder coating your True Dual Rate™ coils. See instructions for additional details.
Vehicle Alignment: We recommend having a suspension specialist align your RAM after installing a MetalCloak suspension.
System Customization: This item is offered as a complete system containing all components shown. We cannot customize, replace, or remove components from the kit. If you need a custom order, all components are available individually, and our sales team can help you place your order.
System Components: If you purchase this system and decide you do not need a component or part of the system, we cannot accept returns.
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VIDEOS
MetalCloak's RAM Suspension Systems
Who Is MetalCloak?
MetalCloak creates Game-Changing Products for the Off-Road Enthusiast.
RAM Suspension
Explore how MetalCloak suspension components add strength, adjustability, and articulation to your RAM truck.
Duroflex™ 101
Learn the basics of the Duroflex™ Joint, including how it works and what to expect from its performance.
Why Gold Zinc?
In this MetalCloak Minute, learn why we use gold zinc to protect suspension components against corrosion and the elements.
Duroflex™ Joint Maintenance
Duroflex™ Joints are maintenance-free and rebuildable. This video covers servicing if you choose to rebuild them.
Duroflex™ Joint Revealed
Explore how the Duroflex™ Joint combines vibration damping with high misalignment for ride comfort and suspension articulation.
Lock-N-Load™
Conventional radius arm systems can bind during articulation, placing stress on bushings and brackets. See how MetalCloak's Lock-N-Load™ addresses that bind.
Coil Springs 101
Learn how typical coil springs work compared with MetalCloak's True Dual Rate™ Coils.
THE TECH
What's in the Kit?
- Front Lower Long Arms
- Front Upper Radius Arm Components with Optional Lock-N-Load™
- Rear Duroflex™ Control Arms
- Front True Dual Rate™ Coils
- Rear True Dual Rate™ Coils or Max Payload Option
- Front Coil Perches
- Front Durotrak™ Track Bar
- Rear Durotrak™ Track Bar
- Front Bump Stop Towers
- Rear Bump Stop Towers
- Front Sway Bar Links
It All Starts with the Bushings
The patented Duroflex™ Joint (metalcloakpatents.com) combines ride comfort with the articulation needed for a flexible RAM bolt-on suspension system.
MetalCloak combines the features of widely used control arm joints in a maintenance-free, self-centering, rebuildable design with high misalignment and an OEM-quality ride.
Duroflex™ Joint Technology
Reinforced with Kevlar®
DuPont™ Kevlar® fiber is compounded into MetalCloak's proprietary Duroflex™ elastomer for added strength and durability.
Duroflex™ Bushings containing Kevlar® can be identified by the MetalCloak “M” on the outer surface.
Full-Size Strength
The 3" Duroflex™ Joints are designed for the demands of full-size RAM trucks. Kevlar®-infused elastomer combines articulation, rotational movement, and noise, vibration, and harshness (NVH) isolation in a maintenance-free design.
Lower Front Radius Long Arms
The lower front radius long arms are engineered for clearance during both up-travel and down-travel.
Their strong construction helps shield undercarriage components while allowing wheel travel and maintaining pinion angle control.
Designed for on-road handling and off-road articulation, these arms provide a durable foundation for your RAM suspension.
Optional Lock-N-Load™
MetalCloak's Lock-N-Load™ Radius Arm System addresses the bind that can place stress on radius arm bushings and axle brackets during articulation.
At full droop, the Lock-N-Load™ extends, compressing one spring and extending the other. At full compression, it shortens while maintaining spring resistance.
How Does Lock-N-Load™ Work?
When locked, Lock-N-Load™ functions as a solid control arm. When unlocked, or “loaded,” it allows axle rotation to reduce stress on bushings and brackets while increasing articulation and helping keep tires in contact with the ground.
The patented design allows the spring mechanism to be locked or unlocked without changing the control arm's set length, providing on-road stability and increased off-road suspension movement.
Control Arm Specifications
RAM Lower Front Radius Arm (SKU #8020)
- CNC Machined
- 5/16" Wall DOM Steel
- 2" OD
- Precision Locking Nut
- Gold Zinc Finish
- Threaded Forged End
Optional RAM Lock-N-Load™ (SKU #8022)
- CNC Machined
- Precision Locking Nut
- Threaded Forged End
- Gold Zinc Finish
- Duroflex™ Joint
RAM Upper Front Radius Arm (SKU #8021)
- CNC Machined
- 3/16" Wall DOM Steel
- 1.5" OD
- 1/4" Steel Clevis
- Precision Locking Nut
- Gold Zinc Finish
- Duroflex™ Joint
- Threaded Forged End
RAM Rear Lower Control Arm (SKU #8023)
- CNC Machined
- 5/16" Wall DOM Steel
- 2" OD
- Threaded Forged End
- Gold Zinc Finish
- Duroflex™ Joints at Both Ends
- Precision Locking Nut
RAM Rear Upper Control Arm (SKU #8024)
- CNC Formed
- 5/16" Wall DOM Steel
- 2" OD
- Precision Locking Nut
- Threaded Forged End
- Designed for Oversized Tire Clearance
- Gold Zinc Finish
- Duroflex™ Joints at Both Ends
- Lengthened for Axle Positioning
What Are True Dual Rate™ Coils?
MetalCloak True Dual Rate™ Coils feature long free lengths for articulation while maintaining ride comfort.
The dual-rate design balances suspension flexibility with support at ride height, helping your RAM maintain control and comfort when carrying supplies. Learn More About True Dual Rate Coils
Front RAM True Dual Rate™ anti-bow coils maintain a larger diameter instead of necking down, helping support the spring and reduce coil bow.
Front Upper Spring Captures/Isolators
Polyurethane front upper spring captures/isolators keep MetalCloak RAM True Dual Rate™ Coils centered while reducing noise, vibration, and harshness (NVH).
Front Lower Coil-Correct Captures
Constructed from 3/16" hot rolled steel plate and .120" wall steel tubing, the front lower Coil-Correct captures work with RAM front True Dual Rate™ Coils to center, angle, and retain the springs to eliminate coil bow.
Patented Durotrak™ Bushings
The patented Durotrak™ Bushing (metalcloakpatents.com) uses MetalCloak's proprietary elastomer compound to reduce noise, vibration, and harshness (NVH).
Its two-piece design threads together for installation without a press, helping isolate vibration while allowing controlled suspension movement.
Oversized 1" Heim Joint
The front track bar's oversized 1" steel heim joint features a carbon fiber-reinforced insert designed to reduce wear without requiring lubrication. Its zinc-plated finish helps resist corrosion.
Front Durotrak™ Track Bar
The solid chromoly front track bar is shaped for clearance during up-travel and down-travel, with clearance for aftermarket axle housings.
Rear Durotrak™ Track Bar
The adjustable rear Durotrak™ Track Bar features patented two-piece Durotrak™ bushings at both ends of a solid 1.375" OD 4130 chromoly steel bar. Adjustable length allows rear axle positioning, while the gold zinc finish helps protect against corrosion.
Bump Stop Towers
Front and rear bolt-on bump stop towers reposition the factory bump stops to accommodate the added lift height.
Sway Bar Link Extensions
Extended sway bar links help maintain the sway bar's position after lifting your RAM. MetalCloak's extensions install at the factory mounting locations without cutting or modification.
Choose Your Shocks
RockSport BLACK Reservoir Shocks
RockSport BLACK remote reservoir shocks are designed to work with MetalCloak True Dual Rate™ Coils. Digressive valving balances control across low and high shock shaft speeds.
The 2.5" diameter aluminum bodies have 3/16" wall thickness and a large fluid capacity to help manage heat during on-road and off-road use.
Front Shock Lengths:
- Extended Length: 26.4"
- Collapsed Length: 16.3"
Rear Shock Lengths:
- Extended Length: 27.9"
- Collapsed Length: 16.6"
Easy 8 Setting Compression Adjustment
An easy-to-grip billet knob with laser-marked numbers provides eight compression settings. Each click increases compression force by approximately 15%, allowing you to tune the shocks for daily driving comfort and off-road control.
Braided Hydraulic Hose
The remote reservoir connects to the shock through a high-pressure hydraulic hose with a Teflon inner core, stainless steel braid, and protective polymer outer layer. Optimized flow passages support shock oil movement between the body and reservoir.
Inner Recessed Cap
Machined recesses inside the end caps maximize usable shaft travel within the shock body. A removable bump cap helps protect the seal assembly at full compression and provides access for servicing.
Oversized Chrome Shaft
The oversized 7/8" shaft is induction hardened to Rockwell C 60+ and hard chrome plated for durability. Its smooth surface provides a consistent contact area for the seals and wiper.
TECHNICAL SPECIFICATIONS
| Items | Details |
|---|---|
| Compatibility | 2014 - 2018 RAM 2500 Diesel |
| Front Lower Long Arms | 2" OD x .310" Wall DOM Steel Tubing |
| Optional Lock-N-Load™ | 3" OD x .120" Wall DOM Steel Tubing |
| Control Arms | Front Upper: 1.5" OD x .187" Wall DOM Steel Tubing Rear Upper and Lower: 2" OD x .310" Wall DOM Steel Tubing |
| Duroflex™ Joints | Proprietary Vulcanized Elastomer with DuPont™ Kevlar® Fiber |
| Coils | High-Tensile Chrome Steel |
| Front Coil Pads | 90A Polyurethane |
| Front Coil Perches | 4.5" x .120" Wall Steel Tube 3/16" Hot Rolled Steel Plate |
| Front Track Bar | Solid 4130 Chromoly Steel |
| Rear Track Bar | Solid 1.375" OD 4130 Chromoly Steel |
| Rear Bump Stop Towers | 3" x 3" x .188" Wall Steel Tube |
| Sway Bar Links | 1/2"-13 x 12.25" Length |
| Coating | Gold Zinc |
IMPORTANT NOTES
Diesel: This MetalCloak RAM Suspension System is for RAM 2500 diesel trucks.
True Dual Rate™ Coils: MetalCloak does not recommend powder coating your True Dual Rate™ coils. See instructions for additional details.
Suspension Alignment: We recommend having a suspension specialist align your RAM after installing a MetalCloak suspension.
System Customization: This item is offered as a complete system containing all components shown. We cannot customize, replace, or remove components from the kit. If you need a custom order, all components are available individually, and our sales team can help you place your order.
System Components: If you purchase this system and decide you do not need a component or part of the system, we cannot accept returns.
INSTALLATION
| Installation Difficulty | Moderate |
| Body Modification | Bolt-On |
| Time to Install | 15 - 18 Hours |
| Installation Instructions | View MetalCloak Installation Instructions. |
