Why 4-Link?

A 4-Link Kit Is Just What Your Vehicle Needs

All Rock Slayer Off-Road Super 4-Link Kits are authentic double triangulated 4-Link front and rear kits. 3-Link Kits are missing an upper link. Although we have eliminated the pan-hard bar, or suspension kits set up your vehicle at stock-ride height. You can run a 20” travel shock. The binding is eliminated due to our arch design. There is no modification to your frame.

Maximum Clearance

We offer the most clearance of any kit out there, plus the Super 4-Link Kit is tucked up inside and even with the bottom of your frame. At Rock Slayer Off-Road, we offer the first and only high-performance 4-Link Complete Kit on the market with no competition.

Tried & Tested for Over Sixteen Years and Going

Rock Slayer Off-Road Super 4-Link Kits have been designed and tested at the Hammers for over sixteen years before production. Our 4-Link Kits are all about quality. We use the best materials:

All DOM and ¼” to 3/8” metal brackets
Lower, rear upper link material and lower cross member made out of 2” DOM
Front upper link 1 ¾” DOM .120 wall
The upper cross member is .120 square stock with ¼” plate gussets
1 ¼” Heim joints all the way around
Custom bolts
Full shank through the bracket, no threads

What A 4-Link Kit Comprises

Every 4-Link Kit comes with geometry completed for easy installation and set up in neutral position, so no anti-squat or squat when you give it gas unparalleled zero horizontal movements. Our 4-Link Kits are designed for all Toyotas and all Jeeps. We can build the kit to work with any axles you want to run.

Your One-Stop Destination for 4-Link Kits

Rock Slayer Off-Road believes in a one-stop-shop. We carry everything you need to install our 4-Link Kits on your vehicle. You don’t have to search for parts, send them back if they don’t fit or haggle between companies about warranty issues.

Why Not The Cheaper Options?

Most people go with leaf springs as a very inexpensive option to get into the sport, and in the short term, they do exactly that. However, the advantages are numerous when comparing leaf springs to a 4-link setup, like the Super 4-link kit we offer. The installation is simple, inexpensive, and can get your feet wet simply.

How Leaf Springs Simply Do Not Measure Up

Cost.
- Because leaf springs need constant maintenance, one can expect to replace bushings, tightening of U-Bolts, and bent leaves after a few runs, which need to be replaced.
Performance
- Because leaf springs are directly attached to the frame in two places and then to the axle, wheel travel is severely limited. Also, when the suspension unloads, leaf springs can cause "axle wrap" (torque will cause the axle to rotate) and "wheel hop" (because of the axle rotation, the wheels will bounce, which can cause breakage and no traction). Leaf springs are very rough at high speeds due to the lack of wheel travel, which creates an extremely uncomfortable ride. After a day on the trails in a truck with leaf springs, your body will be the one telling you to buy a 4-link. Additionally, a leaf spring setup sets your center of gravity very high, which causes stability and balance issues across the board.
Longevity
- Leaf Springs are inexpensive, and therein lies their attraction; however, the low cost coupled with the fact that they were not designed for anything other than holding large amounts of weight, the stress and rigors of the trails cause breakdowns far more often in a leaf system. Keep in mind that leaf springs were designed long before the automobile for wagons. This technology is old technology. Useful but limited. You wouldn't make phone calls with a rotary phone, would you.

Why 4-Links Are Better Than Leaf Springs

Cost.
- The initial cost of 4-links is higher. However, the ultimate cost of running leaf springs is much higher due to upkeep and maintenance. New leaves and bushings cost money.
Performance
- Link systems are attached to the axle and then to the middle of the truck. The advantage of this placement is that it allows the axles to articulate over the rough terrain. Because it is not attached to the front of the truck, the axle moves instead of the truck's body, allowing the axle to do the work instead of the body. When it comes to unloading, the culprit is the leaf. In our system, the ORI air strut, combined with the superior geometry of our 4-link design, eliminates suspension unload completely. A 4-link system is more stable and much smoother because of its ability to adapt to the terrain beneath the truck. Also, there is no binding with a 4-link system moving truck much less restricted. This creates much more control at high speed and on the trail, creating a much smoother ride. Your body will thank you. With the "Super 4-link" kit, the truck sits much lower, close to, or at stock height, so the center of gravity is very low and enables the truck to balance and be much more stable. This only adds to the comfort of your experience - your passengers will be much happier with the purchase.
Longevity
- The "Super 4-link" kit was designed with longevity being just as important as performance. From the helm choice to the gusset and bracket design, every component of our system was designed to take whatever you can throw at it and chew it up with no complaints. So while the initial cost of running a leaf spring system might seem attractive, the eventual bill will quickly outstrip the cost of our kit.

3-Links - The Right Track, But Still Has Its Limitations

Cost.
- The cost of 3-links is nearly the same as 4-link kits. The similarity in price comes from the need to run a pan-hard bar that equals the cost of the 4th link. Everything else (i.e., maintenance and upkeep are virtually the same.)
Performance
- The problem with the 3-link setup is that all the links are straight, which causes binding,as you see with the leaf spring setups. This causes fatigue and stress on the frame and basketry, which can cause failure of the suspension system. You will not get as much articulation because of the binding the ride suffers. Now it binds much less than a leaf spring setup, so in this way, a 3-link system is a step in the right direction, but it still needs a pan-hard bar. A pan-hard bar locates the axle beneath the truck. It is connected to the frame and the axle in a 90-degree position, which a link works in an arc. This causes serious binding and tugging on the frame, which causes the frame to tears in some cases. The pan-hard bar also limits up-travel, which only reduces performance on the trail. The other major issue is caused by the fact that when the axles are linked, it causes a large amount of torque which is all taken up by that one link; all that pressure can cause the system's failure in many places.
Longevity
- All the stress we mentioned above takes a major toll on all the suspension components and your frame. This reduces longevity and dependability and increases the need to spend additional money and do additional work to keep your truck in the trial condition.

Why 4 Links Are Better Than 3

Cost.
- As was said before, the cost of the 3-link is nearly identical to that of the 4-link kit.
Performance
- The biggest advantage that a 4-link kit, and more specifically our "Super 4-link" kit, will outperform a 3-link system is the geometry of the links and the lack of a pan-hard bar, which limits up-travel and increases wear and tear. Our "Super 4-link" kit is a double triangulated link system. This creates several things: no binding, more up and down travel, more articulation, more stability, and most of all, Brute Strength! The "Super 4-link" kit was designed to increase performance and be rock solid for years of pleasurable wheeling with little to no maintenance. Where the 3-link is connected to the axle in a 90-degree position limiting the travel, as we said before, our kit works in a complete arc. The arc design allows for further articulation and stability by limiting stress and binding. A 4-link system utilizes two links to control the torque of the axle. This further reduces stress and increases longevity and dependability. This kit was designed for serious off-road enthusiasts.
Longevity
- As we said above, the utilization of an additional link greatly reduces stress on the system. Stress causes failure and breakage, not to mention the headache of spending more money and time to get back into wheeling shape.