The Ford Raptor is an extremely capable truck that has captured the attention of the off-road community over the past few years. Since the Raptor's release ICON Vehicle Dynamics' engineers have pushed this vehicle to extremes in order to develop the most comprehensive suspension components on the market. From the brutal deserts of the Southwest, to the deep snow of Michigan's U.P., to the wooded trails of the East coast, ICON suspension systems have been put to the test and performed flawlessly. Unable to leave "well-enough" alone, ICON is once again aiming to raise the bar in Raptor performance with the introduction of the RXT Rear Suspension System. Through a combination of in-house R&D and close collaboration with several Raptor enthusiast groups, ICON has spent the better part of the last year further identifying limiting factors in OE components and looking to further extrapolate performance out of this vehicle in complete bolt on fashion.
This Stage 4 System combines the unstoppable performance of our Ford Raptor 3.0 Coilover Shock System and fully adjustable Billet Delta Joint Upper Control Arms with the 3.0 RXT complete rear system. The RXT Rear Suspension System includes an all-new RXT 3.0 Rear Bypass shock, RXT Multi-Rate Leaf Spring, along with the ICON Raptor Rear Bump Stop Kit. Installation of this complete system replaces the aforementioned "limiting factors" and completely redefines the potential of this truck.
ICON Raptor 3.0 Coilovers and Billet Upper Control Arms:
The engineers at ICON Vehicle Dynamics took a different approach to position sensitive performance in our 3.0 front coilover shock. Instead of bypassing a small internal piston at the cost of poor control, road holding, and cornering like a traditional internal position sensitive shock, our shock starts with a true 3" main piston that has robust features such as digressive rebound and flutter stack compression. This combination produces outstanding control, great response, and unparalleled ride performance. To achieve even more control for extreme off-road use, we added an additional internal hydraulic system (much like an external mounted hydraulic bump stop) that produces the extreme forces required during the last 40% of travel to achieve maximum bottom out control. These multiple stages of compression and rebound have been tuned independently to maximize overall performance of the Ford Raptor front suspension. For owners who wish to optimize the ride specific to his or her liking, the front coilover shocks are equipped with an external, "Easy to Adjust" Compression Damping Control Valve, that is effective for the entire stroke of the shock. This compression adjustment valve offers you 10 high resolution settings, each bringing a true feel difference from soft to firm.
These trucks were designed with off-road performance in mind but the OE upper arm with ball joint is one of the weak points in the factory Raptor suspension. Unique to no other Raptor upper control arm on the market to have on vehicle adjustable rod ends to allow for easy alignment adjustment in minutes not hours. That means no taking the arms on and off to adjust them you simply loosen the pinch bolts, adjust to your liking, and re-tighten the pinch bolts. The adjustability allows you to retain the factory track width, while improving tire clearance between the tire and back side of the front fender well.
This system features upper control arms with ICON's patent pending Delta Joint. The Delta Joint is a heavy-duty high angle ball joint that combines the durability of a ball joint with the performance characteristics of a traditional uniball. While the industry standard uniball does a great job of allowing the control arms of a vehicle to articulate with little bind, they do have an inherent weakness that leaves more to be desired when used in a daily driven application - exposure to the elements. The Delta Joint features a zinc plated housing providing the first layer of corrosion resistance, while a tough grease seal keeps potentially harmful elements out of the inner workings of the joint. Metal on metal construction and a greaseable design increase the longevity of the Delta Joint while at the same time allowing for noise-free operation. What makes the Delta Joint unique is that it brings the best of both worlds to ICON upper control arms with features that make it more robust than a uniball, and at the same time capable of greater angularity than a typical ball joint.
ICON Raptor Rear Hydraulic Bump Stop Kit:
The job of the bump stop is to control and limit the final position of the suspension during up-travel. The OE rear bump stop is made of foam rubber, is limited on how much energy it can absorb, and is also a limiting factor in the amount of travel that can be had in the rear of the Raptor. The ICON Raptor Rear Bump Stop Kit utilizes a velocity-sensitive 2.0 hydraulic bump stop that increases the amount of energy absorbed the faster it is hit. With a robust clamshell bracket design and triangulated cross braces, it not only gives a rigid mounting point for the air bump, it helps support a known weak part of the frame prone to failure. This kit was also originally designed to limit bump at the factory location, but has always had a provision to allow for more up-travel through the use of a removable spacer. When combined with the RXT leaf spring and rear shock, the spacer can be removed resulting in a drastic increase in up-travel and off-road performance.
ICON RXT Multi-Rate Leaf Spring:
To take advantage of the additional travel that the RXT Rear Suspension System offers, ICON engineers had to scrap the OE leaf springs and develop a replacement that addressed issues found in the R&D process. The result is a user-adjustable multi-rate leaf pack that offers a major performance gain for almost every Raptor setup imaginable. Features like tip inserts and leaf separators reduce friction and add to overall ride comfort, while a triple military wrapped front and rear half wrapped eyelet increases durability and strength of the leaf spring. A rebound leaf was added to reduce the axle wrap of the Raptor, which was another issue that has been found through ICON's extensive testing. To increase the ride quality of the truck and gain additional droop travel, the spring rate of the standard configuration has been lowered slightly. While most Raptor owners will embrace this, there are those who have outfitted their trucks with a significant amount of weight in the form of a chase rack, spare tires and parts, or other additions. Understanding this, the leaf pack was designed with an additional leaf (provided) that can be exchanged or added to the pack, yielding an additional 10% or 20% spring rate that will handle heavier vehicles.
ICON RXT 3.0 Rear Bypass Shock:
To complete the RXT Rear Suspension System, a new shock had to be developed that could control the suspension throughout this new range of travel, as well as stand up to the off-road abuse that the Raptor would now be capable of delivering. The increase in up-travel was answered with a unique side-mount eyelet approach that allowed ICON engineers to develop a shock that is shorter in collapsed length, longer at extension, and still fits in the factory mounting location. A Dual Hose Recirculating Reservoir (Patent Pending) incorporates a check valve that allows hot fluid in the shock body to be exchanged with cooler fluid in the reservoir. The result of this is the ability of the Raptor to be driven harder for longer periods of time without the worry of shock fade and degraded performance.