Lock-N-Load Replacement Upper Arm for Radius Suspension, JK/JL/JT

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The Patented MetalCloak Lock-n-Load™ Replacement Control Arm for Radius Suspensions (metalcloakpatents.com) is precision engineered to solve the most common problem with radius arm suspensions.

Features Include:
  • Bolt On Installation
  • Eliminates Radius Arm Bind
  • Dual-Purpose Control Arm
  • "Lock It" for Daily Driving
  • "Load It" for Trail Articulation
  • Built with Duroflex™ Joint with Kevlar
  • Compatible with most Radius Arms
  • Lock-N-Load Heavy Duty Wrench
  • Made in the USA
Remove the bind in the Radius Arm suspension with a [click for more...] Lock-N-Load control arm. Allows up to 1.5 of movement under extreme forces that allows your suspension to really flex. Removes strain on bushings and brackets and provides the safety of 4 attachment points to your front axle without loosing any of the flex. Lock it for street use to stiffen up the handling and unlock it for massive articulation.

If your Upper Control Arm measures between 16" and 17" from eye to eye, the Lock-N-Load can bring new life to your Radius Arms.

Fitted with Duroflex™ Joints, the only vulcanized elastomer, self-centering joint enhanced with DuPont™ Kevlar® fiber – providing incredible durability with more misalignment in the control arms and better vibration dampening than anything else available. Exclusive to MetalCloak (see detailed info in the main body).

All parts are treated with Gold Zinc Chromate for the ultimate in defense against the elements.

Note: MetalCloak recommends you have a suspension specialist align your Jeep after installing any suspension components.

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MetalCloak's Jeep JK Wrangler Suspension.

Who Is MetalCloak?

MetalCloak creates Game-Changing Products for the Off Road Enthusiast.

Duroflex 101

This short video covers what you need to know about the basics of the Duroflex Joint. How it should be used and what to expect when using it.

Lock-N-Load For Long Arm Suspension

Designed to remove any stresses from bushings and welded brackets, the Lock-n-load lets your suspension move freely without bind when articulation is need.


"Typical" Radius Arm systems inherently bind causing premature bushing wear and excessive stress on the brackets. The Lock-N-Load solves that problem.

What is Corner Travel Index?

Since 2014 MetalCloak has tested thousands and thousands of rigs at events all across the county collecting specs on the build and cataloging the results. The data collected allows us to make our own products better.




What Are The Applications For The Lock-N-Load?

The Lock-N-Load is designed to ONLY work the front of a linked radius arm suspension.

The Lock-N-Load ONLY replaces the Passenger side upper control arm (your current driver side upper control arm remains in place).

The upper control arm must have a joint that connects at the lower control arm and a clevis that connects at the axle end.

Lock-N-Load Radius Arm

The Lock-N-Load will currently work on most any radius arm suspension that the passenger side upper arm measures between 16" and 17" from eye to eye.

Note: If your radius arm set-up meets these parameters it will work whether you have a JK or a JK or some other custom build (though it has only been designed and tested with the JK in mind).

How Does The Lock-N-Load Work?

The Lock-N-Load performs as a standard "solid control arm" when locked; when unlocked "or loaded" it allows for the axle to roll forward or backward without reliving stress on the bushings and brackets that will provide a longer service life AND directly equate to better articulation that keeps tires on the ground.

The lock-n-load is designed to lock or unlock the spring without changing the length of the control arm; the unique and patented design provides stability on the road when locked out and increased suspension mobility when off road.

Ram Lock-N-Load Compression


The Patented Duroflex™ Joint ( metalcloakpatents.com) is the key to getting the greatest flex in a JL Wrangler bolt-on suspension kit. Period.

Duroflex Control Arm Joint Comparison

MetalCloak has taken the best features of the most widely used control arm joints and combined those features to create the Duroflex Joint, producing a Low-Maintenance, High-Misalignment (34˚), Self-Centering, Rebuildable Joint with an OEM quality ride.

Duroflex Kevlar Bushing

Now with Kevlar!

DuPont™ Kevlar® Fiber is now compounded in the proprietary elastomer of the Duroflex Bushing, bringing even more strength, durability and performance.

Kevlar® is a synthetic fiber with extremely high tensile strength to weight ratio…five times stronger than steel and commonly used in bullet proof armor applications.

Duroflex Bushings w/Kevlar® can be identified by the MetalCloak “M” located on the outer surface.

The Duroflex Joint Provides The Best Ride. Period.

High Vibration Dampening & Self Centering...

Made of a Proprietary Elastomer Compound, the High Vibration Dampening and Self-Centering characteristics of the Duroflex Joint means you will always get...

  • The best ride quality
  • No binding of your control arms.
  • None of the micro-wear that DESTROYS Flex Joints
Duroflex Joint Vibration Dampening
Duroflex High Misalignment

High Misalignment...

By adapting the High Transverse Flex characteristics of a typical Flex Joint, the Duroflex Joint gives you...

  • Over 34° of Misalignment
  • Over 68° per Control Arm

Absorbs Micro-Movements...

Because the Duroflex Bushing absorbs the millions of Rotational Micro-Movements found in your daily driving, you get...

  • Improved Ride Quality
  • None of the micro-wear that DESTROYS Flex Joints
Duroflex Mirco Movement
Duroflex High Misalignment

True Bearing Surface...

The outer surface of the Duroflex Bushing acts as a bearing, breaking free when called for, giving you...

  • Maximum Rotation & Articulation
  • No "Binding Up" of the Control Arms

Threaded Forged Ends

Forged for Strength...

The adjustable threaded ends are Forged providing a 37% higher fatigue strength over inferior cast parts, this EXTRA rock bashing strength will hold up to whatever you throw at em.

Forged Ends

JK Wrangler Lock-N-Load (SKU #7232)
  • CNC Machined
  • Precision Locking Nut
  • Threaded Forged Ends
  • Gold Zinc Plated
  • Duroflex Joint
Lock-N-Load Control Arm Specs

Lock-N-Load Wrench

Lock N Load Wrench

The Lock-N-Load wrench is specifically designed to work with your Lock-N-Load Control Arm.

This tool is designed to easily adjust to lock or load your control arm with ease. Made of laser cut 3/8" Hot Rolled Steel. Wrench is finished with a Gold Zinc finish for a classic high end, long lasting MetalCloak look.

What's In The Kit?

  • Lock-N-Load
  • Lock-N-Load Wrench
  • All Required Hardware
Whats in the Kit


Items Details
Compatibility 2007 - 2018 Jeep JK Wrangler
Lock-N-Load 2 1/2" .120 Steel Tubing
Duroflex Joint Proprietary Vulcanized Elastomer made with DuPont™ Kevlar® fiber
Steel Coating Gold Zinc


Installation Difficulty Easy
Body Modification None
Time to Install 1 - 2 Hours
Installation Instructions Click Here to see a full list of MetalCloak Installation Instructions.

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