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Description
2021-2024 Ford F-150 4WD 3.5-4.5 Inch Lift Stage 2 Suspension System Tubular W/ Leaf Packs Icon Vehicle DynamicsICON Vehicle Dynamics 2021 2024 Ford F 150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON engineers' primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality both on and off road. To achieve this, these systems include high strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F 150
ICON Vehicle Dynamics 2021-2024 Ford F-150 4WD suspension systems are designed with maximum performance and the serious driver in mind. ICON engineers' primary focus is to increase wheel travel and damping ability, which translates into outstanding vehicle control and ride quality both on and off-road.
To achieve this, these systems include high-strength CNC machined ductile iron steering knuckles that replicate the suspension geometry of the F-150 Tremor and are effectively a Tremor Inchconversion Inch for your F-150 4WD. This Stage 2 system includes vehicle-specific tuned 2.5 Inch coilover shocks featuring an internal reservoir for exceptional cooling properties and ICON-engineered coil springs for superior vehicle Inchfeel Inch through the range of travel.
These coilovers are also height adjustable for 3.5-4.5 Inch of front lift over stock, allowing the use of larger, more aggressive wheel and tire combinations. Their combination with the ICON steering knuckles also allows for a 20 Percent increase in wheel travel compared to other ICON F-150 coilover kits.
Tubular Delta Joint Pro upper control arms on the F-150 not only add strength and durability, but help retain factory alignment spec range, increasing caster over stock and allow for the extra lift height this system provides. ICON 2.5 Aluminum Series piggyback reservoir rear shocks utilize a vehicle-specific valving and offer increased damping and head dissipation, balancing the performance of the truck from front to rear.
ICON Multi-Rate Leaf Springs are included to allow rear spring rate and ride height customization, improve ride quality, and reduce axle wrap by eliminating the factory rear blocks. Rear ride height is kept within an acceptable range using the ICON billet aluminum 1 inch lowering shackles.
The ICON Vehicle Dynamics 2021-2024 F-150 4WD Stage 2 suspension system is an excellent choice for those drivers looking to enhance the capabilities of their pickup on the road as well as in the dirt.
Features and Benefits:- This system features upper control arms with ICON's patented Delta Joint PRO. Delta Joint PRO is ICON's innovative new suspension articulation joint which combines the durability and longevity of factory style ball joints with performance and strength that exceeds traditional motorsports-style ball joints. The Delta Joint PRO features a new rebuildable, serviceable design in which any component may be removed, inspected, and replaced without having to purchase a whole new joint. Strength and durability are improved by using a larger ball with 56 Percent more bearing surface than our standard Delta Joint, along with improved lubrication sealing. But improved performance is at the heart of the Delta Joint PRO, with a full 90 degrees of articulation, from one extreme to the other. This represents a 14 Percent improvement in range of motion, over the highly capable original Delta Joint, allowing for maximum bind-free suspension movement through the complete range of travel. The Delta Joint PRO is built to take the abuse, with a chromoly ball and shaft that has a bearing surface hardened to Rockwell C 55. The replaceable races are made of graphite-impregnated sintered metal, machined to the finest tolerance to provide a flawless, metal-to-metal bearing interface. We also redesigned the lubrication system, with lubricant channels that distribute grease more efficiently without extending past the bearing seal.
- MULTI-RATE INFO (with ICON Billet Shackles):
- Option #1 (as shipped)
- +1.50 inch rear lift height over stock (unloaded)
- Option #2
- +20 Percent spring rate over Option #1
- +2.75 Inch rear lift height over stock (unloaded)
- +1.50 inch rear lift height over stock w/ 400lb constant load
- Option #3
- +40 Percent spring rate over option #1
- +3.50 inch rear lift height over stock (unloaded)
- +1.00 inch rear lift height over stock w/ 850lb constant load
- High strength ductile iron steering knuckles replicate F-150 Tremor suspension geometry
- Adjustable coilovers offer 3.5-4.5 Inch of front lift height over stock
- Tubular Upper Control Arms with Delta Joint Pro ball joints for added strength, durability, and alignment spec range
- 20 Percent increase in front wheel travel and improved ride quality over stock with no change in towing capacity
- Vehicle specific tuned front and rear shocks for superior damping and vehicle control
- Corrosion resistant CAD plated coilover shock bodies with 7/8 Inch shafts
- FK rod end bearings for extended longevity and minimal deflection
- High strength alloy CNC machined lower bar pin
- 2.5 Aluminum Series piggyback reservoir rear shocks with 7/8 Inch hardened chromed steel shafts
- 6061 Aircraft grade aluminum CNC machined components
- 3 user-adjustable rear spring rates for unique vehicle setups
- Reduced rear axle wrap and improved ride quality compared to stock leaf springs
- Billet aluminum lowering shackles feature maintenance and noise free OE Ford bushings
- 100 Percent Bolt-on system - no drilling, cutting, or welding necessary for install
- Active Or Passive Suspension: Passive
- Adjustable Compression: No
- Adjustable Control Arm: No
- Adjustable Damping: No
- Adjustable Rebound: No
- Bushings Included: Yes
- Coil Quantity Front: 2.0
- Coils Quantity Front: 2.0
- Front Reservoir Style: Internal
- Front Shock Body Diameter: 2.5
- Front Spring Rate Type: Linear
- Grade Type: Performance
- Leaf Spring Leaf Quantity: 8.0
- Maximum Lift: 4.5 Inch
- Maximum Lift Front: 4.5 Inch
- Maximum Lift Rear: 3.5 Inch
- Minimum Lift Front: 3.5 Inch
- Minimum Lift Rear: 1.5 Inch
- Mounting Hardware Included: Yes
- Oem Wheels & Tires Fitment: Not Compatible With All Available OE Wheel/Tire Combinations. Aftermarket Wheels With Lower Offset/Less Backspace Recommended.
- Rear Reservoir Style: Piggyback
- Rear Shock Body Diameter: 2.5
- Rear Spring Rate Type: Variable
- Recommended Aftermarket Tires: 34 Inch X 12.50 Inch (Larger Tires May Fit But Fender Trimming And Modifications Will Be Required)
- Recommended Aftermarket Wheels: Icon Alloys - 17x8.5 Inch W/ 5 Inch Backspace / 6mm Offset, Icon Alloys - 18x9 Inch W/ 5.25 Inch Backspace / 6mm Offset, Icon Alloys - 20x9 Inch W/ 5.625 Inch Backspace / 16mm Offset
- Shocks Included: Yes
- Spring Color: Black
- Spring Material: Steel
- Add On Part: 198001 - Billet Spanner Wrench Kit, 611081 - F-Series Dynamic Headlamp Rear Sensor Kit, 198000 - 2 Pin Coilover Spanner Wrench Kit, 191013 - Nipple Greasing Adapter Kit, 191009 - Icon Long 2.5 Coil Wrap W/Logo (14.5-15.5)
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.0 ★★★★★
Based on 388 reviews
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Product Reviews
★★★★★ 5
K and N is the best
Size: CA12290-Premium
In my opinion, you can’t buy a better air filter. Been buying them for all my cars since the 1990s.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2024
★★★★★ 2
Does not fit 2023 Honda Accord as it says in the title
Size: CA12290-Premium, Size: CA12290-Premium
Does not fit 2023 Honda Accord as it says in the title. Seems like good quality otherwise.
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Reviewed in the United States on October 3, 2024
★★★★★ 5
Fits Toyota 2010 FJ cruiser
Perfect fit for a Toyota 2010 FJ cruiser. Install might have been the easiest cabin filter I've done in any car that new. Remove glove box, pull out the cover and replace it. Fits great and takes odors out from it sitting for 6 months in the driveway. No notice to less airflow when on any level of fan speed.
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Comparison with POTAUTO filter: Very similar but cheaper
I bought a POTAUTO MAP 1033C and EPAuto CP846 cabin air filter to compare them for use in my 09 Legacy (gen 4). They both seemed comparable and are cheaper than most other, similar filters, though the POTAUTO was and still is ~33% more expensive than the EPAuto.
Both seem built well-enough, considering they're only being used as relatively low-flow cabin filters. That said, the EPAuto is slightly better, mainly due to the white trim piece being unattached along one side on the bottom of the POTAUTO filter. Almost certainly nothing that will affect its performance or longevity, but it is interesting considering it's the more expensive of the two. However, it must be kept in mind that this is an incredibly small sample size.
In one of my very scientific tests (/s), I held them up side by side and looked through them toward the sun (obviously being careful) to judge thickness/density and uniformity. Neither had any thin spots that I noticed, and they were pretty similar overall. One of them blocked slightly more light than the other, indicating more filtration, but I unfortunately don't remember which one. I feel like it was the EPAuto, but I don't really want to speculate as I could very well be wrong. What I do remember is that the difference was so minor that all else being equal, it wouldn't justify the cost difference between the two. In other words, even if the POTAUTO were the slightly better one, it wouldn't be worth the extra few dollars for the minimal amount of extra filtration.
In another test, I compared the filters to each other and the old filter (which I'm pretty sure was OEM, but certainly not a charcoal filter, so it was significantly thinner) by blowing air from a compressor through them. I held the nozzle at roughly the same distance from each on one side of the filters, and I held my other hand at roughly the same distance from each on the other side. The old filter, unsurprisingly, let much more air flow through. Both charcoal filters were much more restrictive due to their extra thickness, leading me to feel much less air coming through. Both were roughly the same. Both filters also held up just fine to the strong blasts of air.
I bought a couple other filters that I was going to cut to fit to use one or both with these filters as a pre-filter and/or additional charcoal layer. After the airflow test, I decided against this, as these are a lot more restrictive than OEM already, and I didn't want to push it, since that could at best cause issues with getting good airflow into the car, and at worst could damage the blower. If not for the fact many, many people have been using these and similar filters for a long time without apparent issue caused by this, I would hesitate to even use these. I haven't noticed a decrease in the airflow, but it's doubtful I would since I rarely turn the fan up past the first couple settings (usually have it on the first) if I have it running at all, and I have the center vents pulled out (to access the inside of the dash) which causes the flow at the vents to be reduced slightly.
TL;DR - Both the POTAUTO and EPAuto charcoal filters appear to be a good choice, with the EPAuto having a slight edge on build quality (based on my limited sample size of one each) and a cheaper price. Filtration appears to be very similar between the two, certainly not enough of a difference to warrant the extra price for the POTAUTO over the EPAuto. Flow is significantly more restrictive than OEM filter but doesn't appear to be an issue. I give the EPAuto 5 stars and the POTAUTO 4 stars, only because the value of the POTAUTO is a good bit less (very similar or possibly even inferior quality for 33% more money). I can't speak to their longevity or performance, but I don't imagine either should prove to be an issue.
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As a side note relating specifically to the Legacy: replacing the cabin filter in this car is a PITA. It's not overly difficult per se, but a serious pain and certainly not something you're going to do when you have a spare few minutes. I'd rate it probably around a 3.5/10 in difficulty and a 7/10 for annoyance. While you can sort of access it by removing the manual compartment, you can't remove the tray through that. So you need to actually take the whole glove box out, which requires removing the side panel, unhooking the string/loop that keeps it from falling all the way down, and removing a few plastic screws, which can be a bit of a pain (and apparently Subaru loves them since they're all over the car). A stubby Philips driver will be helpful. Once you have the glove box out of the way, you have to unscrew several more of those plastic screws to remove the plastic cover between the glove box and the filter. This hole is where you gain access. Be careful when removing the old filter as loose dirt and debris may fall out and make a bit of a mess. You don't really want to get any in the fan below it if you can help it. Reverse the steps to reassemble it, and remember to reattach the string. Getting the glove box back in its track can be a bit of a challenge; in my experience from doing it multiple times I've found you sort of half force it and half don't. That is, it'll likely offer some resistance even if it's lined up, so if you try to baby it you'll probably be there a while, but also play with the alignment a bit to see if you can get it without marring up the tab and the slot on the right side too much. All in all, expect to spend anywhere from 15-45 minutes on this, and make sure you have a standard length as well as a shorter or stubby Philips screwdriver. I have to say, when it comes to air filters, this car is horrible. The air intake filter is a pain to change, too--much worse than most if not all other cars I've done.
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Keywords: Subaru Legacy, fourth gen, fourth generation, 4th gen, 4th generation, 03, 04, 05, 06, 07, 08, 09, 2003, 2004, 2005, 2006, 2007, 2008, 2009
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Reviewed in the United States on September 29, 2017
★★★★★ 5
Good price on the part and 5 min install saved me $35
Fit fine in my 4th gen 4Runner took 5mins to install
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Reviewed in the United States on April 19, 2026
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